Preparation of Water-soluble Sm∶ZnO-NH₂ QDs Fluorescent Probe and Its Application for Selective Detection of Dopamine Enhanced Publication

{ "defaultlang": "zh", "titlegroup": { "articletitle": [ { "lang": "zh", "data": [ { "name": "text", "data": "水溶性Sm∶ZnO⁃NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "量子点荧光探针制备及其用于选择性检测多巴胺" } ] }, { "lang": "en", "data": [ { "name": "text", "data": "Preparation of Water-soluble Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs Fluorescent Probe and Its Application for Selective Detection of Dopamine" } ] } ] }, "contribgroup": { "author": [ { "name": [ { "lang": "zh", "surname": "崔", "givenname": "美佳", "namestyle": "eastern", "prefix": "" }, { "lang": "en", "surname": "CUI", "givenname": "Meijia", "namestyle": "eastern", "prefix": "" } ], "stringName": [], "aff": [ { "rid": "aff1", "text": "1" }, { "rid": "aff2", "text": "2" } ], "role": [ "first-author" ], "bio": [ { "lang": "zh", "text": [ "崔美佳（1998-），女，黑龙江哈尔滨人，硕士研究生，2020年于齐齐哈尔大学获得学士学位，主要从事纳米材料的研究。E-ｍail：1870574051@qq.com" 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"name": "text", "data": "采用3⁃氨丙基三乙氧基硅烷（APTEs）封端氧化锌量子点（ZnO QDs）的方式，制备了一种荧光性能稳定的水溶性Sm∶ZnO⁃NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针。通过透射电子显微镜（TEM）、X射线衍射（XRD）、X射线光电子能谱（XPS）、傅里叶变换红外光谱仪（FT⁃IR）、纳米粒度和Zeta电位仪（DLS）、稳瞬态荧光光谱仪（PL）等对材料进行表征。最优化条件下制备的该探针在水中具有良好的荧光性能，在4 ℃下贮存10 d后其荧光强度仍保留92%。基于该探针的荧光可以直接被多巴胺（DA）选择性猝灭，建立了一种选择性检测DA含量的荧光分析新方法，在50~1 600 ng/mL浓度内，该探针呈现良好的线性关系（" }, { "name": "italic", "data": [ { "name": "text", "data": "y" } ] }, { "name": "text", "data": "=0.4639" }, { "name": "italic", "data": [ { "name": "text", "data": "x" } ] }, { "name": "text", "data": "+ 0.008530，" }, { "name": "italic", "data": [ { "name": "text", "data": "R" } ] }, { "name": "sup", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "=0.996 3），检出限（LOD）为1.08 ng/mL，具有较好的稳定性和重现性，并成功应用于人体尿液样品的检测，回收率为98.18%~107.84%。" } ] } ] }, { "lang": "en", "data": [ { "name": "p", "data": [ { "name": "text", "data": "In this paper， a water-soluble Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs fluorescent probe with stable fluorescence performance was prepared by means of 3-aminopropyltriethoxysilane（APTEs） terminated zinc oxide quantum dots（ZnO QDs）. Materials were characterized by transmission electron microscopy（TEM）， X-ray diffraction（XRD）， X-ray photoelectron spectroscopy（XPS）， Fourier transform infrared spectrometer（FT-IR）， nanoparticles size and Zeta potentiometers（DLS）， steady transient fluorescence spectrometer（PL）， " }, { "name": "italic", "data": [ { "name": "text", "data": "etc" } ] }, { "name": "text", "data": ". The probe prepared under optimal conditions has good fluorescence performance in water， and its fluorescence intensity remains 92% after 10 d of storage at 4 ℃. Based on the probe fluorescence can be directly quenched by dopamine（DA）， a new method for fluorescence analysis for selective detection of DA content was established， and the probe showed a good linear relationship（" }, { "name": "italic", "data": [ { "name": "text", "data": "y" } ] }, { "name": "text", "data": "=0.46393" }, { "name": "italic", "data": [ { "name": "text", "data": "x" } ] }, { "name": "text", "data": "+0.008530， " }, { "name": "italic", "data": [ { "name": "text", "data": "R" } ] }, { "name": "sup", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "=0.996 3） and a detection limit of 1.08 ng/mL within a concentration of 50-1 600 ng/mL， which had good stability and reproducibility. It was successfully applied to the detection of human urine samples， and the recovery rate was 98.18% to 107.84%." } ] } ] } ], "keyword": [ { "lang": "zh", "data": [ [ { "name": "text", "data": "Sm掺杂" } ], [ { "name": "text", "data": "ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs" } ], [ { "name": "text", "data": "荧光探针" } ], [ { "name": "text", "data": "选择性猝灭" } ], [ { "name": "text", "data": "多巴胺" } ] ] }, { "lang": "en", "data": [ [ { "name": "text", "data": "Sm doped" } ], [ { "name": "text", "data": "ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs" } ], [ { "name": "text", "data": "fluorescence probe" } ], [ { "name": "text", "data": "selective quenching" } ], [ { "name": "text", "data": "dopamine" } ] ] } ], "highlights": [], "body": [ { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "1　引　　言" } ], "level": "1", "id": "s1" } }, { "name": "p", "data": [ { "name": "text", "data": "ZnO QDs作为半导体量子点由于其安全无毒、生物相容性良好和成本低等优点" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "1", "type": "bibr", "rid": "R1", "data": [ { "name": "text", "data": "1" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "3", "type": "bibr", "rid": "R3", "data": [ { "name": "text", "data": "3" } ] } } ], "rid": [ "R1", "R2", "R3" ], "text": "1-3", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "，已在药物输送" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "4", "type": "bibr", "rid": "R4", "data": [ { "name": "text", "data": "4" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "、生物标记" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "5", "type": "bibr", "rid": "R5", "data": [ { "name": "text", "data": "5" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "7", "type": "bibr", "rid": "R7", "data": [ { "name": "text", "data": "7" } ] } } ], "rid": [ "R5", "R6", "R7" ], "text": "5-7", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "、紫外线光电检测器" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "8", "type": "bibr", "rid": "R8", "data": [ { "name": "text", "data": "8" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "、气体传感器" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "9", "type": "bibr", "rid": "R9", "data": [ { "name": "text", "data": "9" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "10", "type": "bibr", "rid": "R10", "data": [ { "name": "text", "data": "10" } ] } } ], "rid": [ "R9", "R10" ], "text": "9-10", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "、太阳能电池" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "11", "type": "bibr", "rid": "R11", "data": [ { "name": "text", "data": "11" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "等许多领域显示出广泛的应用前景，其突出的光电性能成为人们关注的问题之一。此外，ZnO QDs因其荧光发射强度较强，可用作生物学和化学检测的荧光探针。" } ] }, { "name": "p", "data": [ { "name": "text", "data": "大量研究表明，ZnO QDs的荧光强度与其氧空位（V" }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "text", "data": "）浓度有关" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "12", "type": "bibr", "rid": "R12", "data": [ { "name": "text", "data": "12" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "13", "type": "bibr", "rid": "R13", "data": [ { "name": "text", "data": "13" } ] } } ], "rid": [ "R12", "R13" ], "text": "12-13", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "，而稀土掺杂将影响ZnO QDs的V" }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "text", "data": "浓度，从而影响ZnO QDs的荧光性能" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "14", "type": "bibr", "rid": "R14", "data": [ { "name": "text", "data": "14" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。Jaggi等" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "15", "type": "bibr", "rid": "R15", "data": [ { "name": "text", "data": "15" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "研究发现，水热法制备的Sm掺杂CdSe QDs紫外吸收峰会发生红移，CdSe QDs中出现缺陷，且随着Sm的掺杂量增大，其缺陷浓度增加。Yang等" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "16", "type": "bibr", "rid": "R16", "data": [ { "name": "text", "data": "16" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "采用温和的水热法成功合成了Eu" }, { "name": "sup", "data": [ { "name": "text", "data": "3+" } ] }, { "name": "text", "data": "掺杂ZnO纳米材料，Eu" }, { "name": "sup", "data": [ { "name": "text", "data": "3+" } ] }, { "name": "text", "data": "掺杂ZnO荧光强度明显增强，其原因是Eu" }, { "name": "sup", "data": [ { "name": "text", "data": "3+" } ] }, { "name": "text", "data": "掺杂使ZnO中V" }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "text", "data": "含量增加。" } ] }, { "name": "p", "data": [ { "name": "text", "data": "DA是重要的儿茶酚胺神经递质之一，在正常体内平衡和临床诊断中起着至关重要的作用。由于DA的异常含量可能导致多种神经系统疾病，如精神分裂症、帕金森氏病和阿尔茨海默氏病" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "17", "type": "bibr", "rid": "R17", "data": [ { "name": "text", "data": "17" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "18", "type": "bibr", "rid": "R18", "data": [ { "name": "text", "data": "18" } ] } } ], "rid": [ "R17", "R18" ], "text": "17-18", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "，所以准确检测DA在体内的含量显得尤为重要。迄今为止，研究人员已经开发了许多检测DA的方法，例如电化学发光、电化学、毛细管电泳、比色法、高效液相色谱和荧光法等" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "19", "type": "bibr", "rid": "R19", "data": [ { "name": "text", "data": "19" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "23", "type": "bibr", "rid": "R23", "data": [ { "name": "text", "data": "23" } ] } } ], "rid": [ "R19", "R20", "R21", "R22", "R23" ], "text": "19-23", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。在这些方法中，荧光法因其操作简单、灵敏度高、成本低，引起了科研人员的广泛关注。Xu等" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "24", "type": "bibr", "rid": "R24", "data": [ { "name": "text", "data": "24" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "通过水热法合成了硫代乙醇酸（TGA）表面功能化的MoS" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs，用于选择性检测DA，在0.05~20 μmol/L线性范围内，具有较低检出限（LOD）（27 nmol/L）。Zhao等" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "25", "type": "bibr", "rid": "R25", "data": [ { "name": "text", "data": "25" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "通过溶胶凝胶法合成了ZnO QDs，并基于DA对ZnO QDs的荧光猝灭开发了一种ZnO QDs荧光探针用于检测DA，在0.05~10 μmol/L范围内呈线性关系，LOD为12 nmol/L。因此，继续开发具有更高选择性和更高灵敏度的测定DA的荧光方法仍然非常有必要。" } ] }, { "name": "p", "data": [ { "name": "text", "data": "针对裸露的ZnO QDs在水溶液中会荧光猝灭、不易储存和应用、荧光性能不稳定" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "26", "type": "bibr", "rid": "R26", "data": [ { "name": "text", "data": "26" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "等问题，本文采用简单温和的方法，通过Sm掺杂提高荧光强度，再通过APTEs封端提高其在水中的荧光稳定性，制备了一种荧光性能稳定的水溶性Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针。同时，基于Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光可以直接被DA选择性猝灭，DA的浓度与Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光猝灭程度成正比，建立了一种选择性检测DA含量的荧光分析新方法，并应用于实际样品检测。" } ] } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "2　实　　验" } ], "level": "1", "id": "s2" } }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "2.1　实验药品与仪器" } ], "level": "2", "id": "s2a" } }, { "name": "p", "data": [ { "name": "text", "data": "二水合乙酸锌（Zn（Ac）" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "·2H" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "O）购于西陇化工股份有限公司，3-氨丙基三乙氧基硅烷（3-aminopropyltriethoxysilane，APTEs）、六水合硝酸钐（Sm（NO" }, { "name": "sub", "data": [ { "name": "text", "data": "3" } ] }, { "name": "text", "data": "）" }, { "name": "sub", "data": [ { "name": "text", "data": "3" } ] }, { "name": "text", "data": "·6H" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "O）、三（羟甲基）氨基甲烷（Trimethylolaminomethane，Tris）购于阿拉丁试剂有限公司，无水乙醇购于成都市科隆化学品有限公司，氢氧化钠（NaOH）购于广州市金华大化学试剂有限公司，盐酸多巴胺（DA）购于上海柏卡化学有限公司，实验中使用的试剂规格均为分析纯。" } ] }, { "name": "p", "data": [ { "name": "text", "data": "测试仪器：透射电子显微镜（日本JEOL，JEM-2100），X射线衍射仪（德国Bruker，D8A A25），X射线光电子能谱（美国THERMO，Thermo 250i），傅里叶变换红外光谱仪（德国Bruker公司，INVENIO R），纳米粒度和Zeta电位仪（英国Malvern公司，Zetasizer NanoZS90），稳瞬态荧光光谱仪（美国HORIBA公司，FluoroMax-4）。" } ] } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "2.2　水溶性Sm∶ZnO⁃NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的制备" } ], "level": "2", "id": "s2b" } }, { "name": "p", "data": [ { "name": "text", "data": "取0.01 mol NaOH溶于100 mL无水乙醇，制成NaOH乙醇溶液。取0.01 mol的Zn（Ac）" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "·2H" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "O和不同Sm掺杂量（质量百分比分别为0%，1%，2%，3%，4%，5%）的Sm（NO）" }, { "name": "sub", "data": [ { "name": "text", "data": "3" } ] }, { "name": "text", "data": "·6H" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "O放置于三颈烧瓶中，加入100 mL无水乙醇，在75 ℃水浴锅加热至完全溶解，再将温度降至65 ℃；然后加入NaOH乙醇溶液，在65 ℃、搅拌的条件下反应2 h，生成白色沉淀，离心分离、洗涤后得到Sm∶ZnO QDs，放置于4 ℃冰箱备用。取一部分Sm∶ZnO QDs产品在50 ℃下真空干燥，制成Sm∶ZnO QDs粉末，用于性能表征。" } ] }, { "name": "p", "data": [ { "name": "text", "data": "称取一定量的APTEs，以无水乙醇为溶剂，采用定容法配制一系列不同浓度的APTEs乙醇溶液，静置备用。将上述制备得到的Sm∶ZnO QDs分散在20.0 mL无水乙醇中，分别加入10.0 mL不同浓度的APTEs乙醇溶液、0.40 mL超纯水，室温下快速搅拌，反应2 h，离心分离后洗涤数次，制得Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs。取一部分Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs在50 ℃下真空干燥，制成Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs粉末，用于性能表征；其余的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs分散于超纯水中，放置4 ℃冰箱中保存备用。" } ] } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "2.3　Sm∶ZnO⁃NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针表征" } ], "level": "2", "id": "s2c" } }, { "name": "p", "data": [ { "name": "text", "data": "对所制备的QDs粉末样品，通过TEM和XRD表征ZnO QDs及Sm∶ZnO QDs的形貌、晶体结构和物相分析；通过XPS表征Sm∶ZnO QDs的表面价态和空穴浓度；利用FT-IR分析Sm∶ZnO QDs和Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的官能团。" } ] }, { "name": "p", "data": [ { "name": "text", "data": "将所制备的QDs样品溶液使用DLS进行动态光散射分析，分析所制备样品的粒径分布；使用稳瞬态荧光光谱仪测定所制备样品的荧光性能，考察Sm掺杂量、APTEs浓度对所制备的QDs样品溶液荧光性能的影响。" } ] } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "2.4　定量检测多巴胺及人体尿样中多巴胺的检测" } ], "level": "2", "id": "s2d" } }, { "name": "p", "data": [ { "name": "text", "data": "基于DA对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的选择性荧光猝灭效应，本文以Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs为荧光传感器，根据DA浓度与Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光强度成线性关系，建立了一种选择性检测DA含量的荧光分析新方法。具体分析方法如下：将1.00 mL Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs加入10.0 mL离心管中，加入5.00 mL超纯水，利用涡旋混合器震荡1.00 min混合均匀，得到Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光传感器；分别加入1.00 mL不同浓度DA溶液，DA的浓度为50~1 600 ng/mL，振荡混合2 min。利用波长为383 nm的紫外光激发，对534 nm处的荧光强度进行检测，根据DA的浓度与Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光强度建立工作曲线，形成DA含量的荧光分析新方法并应用于实际样品检测。" } ] }, { "name": "p", "data": [ { "name": "text", "data": "DA实际样品的测定：DA实际样品取自成人的尿液，尿液以10 000 r/min离心分离10 min，取上清液为尿液样品。取1.00 mL尿液样品按照上述荧光分析方法进行检测，同时，采用加标回收方法检验该方法的可行性。" } ] } ] } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "3　结果与分析" } ], "level": "1", "id": "s3" } }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "3.1　QDs的形貌、晶体结构和物相分析" } ], "level": "2", "id": "s3a" } }, { "name": "p", "data": [ { "name": "text", "data": "通过前期研究" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "27", "type": "bibr", "rid": "R27", "data": [ { "name": "text", "data": "27" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "，最佳荧光性能的Sm∶ZnO QDs的Sm掺杂量为3%。" }, { "name": "xref", "data": { "text": "图1", "type": "fig", "rid": "F1", "data": [ { "name": "text", "data": "图1" } ] } }, { "name": "text", "data": "为3%Sm掺杂前后ZnO QDs样品的TEM图，从图中可以看出，3%Sm掺杂前后ZnO QDs为球型结构，粒径在5~10 nm之间，粒径均匀。" } ] }, { "name": "fig", "data": { "id": "F1", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图1" } ], "title": [ { "name": "text", "data": "（a）ZnO QDs的TEM图；（b）Sm掺杂量为3%的Sm∶ZnO QDs的TEM图。" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.1" } ], "title": [ { "name": "text", "data": "TEM image of ZnO QDs（a） and 3%Sm∶ZnO QDs（b）" } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032317&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032323&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032320&type=", "width": "118.71990967", "height": "46.32653809", "fontsize": "" } ] } }, { "name": "p", "data": [ { "name": "text", "data": "为了验证Sm的存在，实验采用EDS对3%Sm∶ZnO QDs样品进行了表征，其EDS能谱图见" }, { "name": "xref", "data": { "text": "图2", "type": "fig", "rid": "F2", "data": [ { "name": "text", "data": "图2" } ] } }, { "name": "text", "data": "。由图中可知所制备的样品存在元素Zn、O和Sm的峰，说明ZnO QDs成功引进了Sm元素。" } ] }, { "name": "fig", "data": { "id": "F2", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图2" } ], "title": [ { "name": "text", "data": "3% Sm∶ZnO QDs的EDS谱" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.2" } ], "title": [ { "name": "text", "data": "EDS spectrum of 3% Sm∶ZnO QDs" } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032327&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032331&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032329&type=", "width": "60.96088409", "height": "48.78905487", "fontsize": "" } ] } }, { "name": "p", "data": [ { "name": "xref", "data": { "text": "图3", "type": "fig", "rid": "F3", "data": [ { "name": "text", "data": "图3" } ] } }, { "name": "text", "data": "为Sm掺杂前后ZnO QDs样品的XRD图谱，从" }, { "name": "xref", "data": { "text": "图3", "type": "fig", "rid": "F3", "data": [ { "name": "text", "data": "图3" } ] } }, { "name": "text", "data": "可知Sm掺杂前后所制备的ZnO QDs样品的衍射峰与六方纤锌矿型ZnO的XRD标准卡片（COD 9011662）的衍射峰一致，均在2" }, { "name": "italic", "data": [ { "name": "text", "data": "θ" } ] }, { "name": "text", "data": "分别为31.78°、34.42°、36.26°、47.54°、56.61°、62.86°、67.96°处有明显的衍射峰，分别对应ZnO的（100）、（002）、（101）、（102）、（210）、（103）、（212）晶面。XRD图谱中没有出现氧化钐或其他相的特征衍射峰" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "28", "type": "bibr", "rid": "R28", "data": [ { "name": "text", "data": "28" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "，说明所制备的样品纯度高，没有除ZnO外的其他物质。而且从" }, { "name": "xref", "data": { "text": "图3", "type": "fig", "rid": "F3", "data": [ { "name": "text", "data": "图3" } ] } }, { "name": "text", "data": "中可以看出，Sm掺杂前后ZnO QDs样品 的衍射峰位置和峰型均未发生变化。结合EDS表征分析，表明Sm成功地掺杂到ZnO晶格中。" } ] }, { "name": "fig", "data": { "id": "F3", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图3" } ], "title": [ { "name": "text", "data": "ZnO QDs和3%Sm∶ZnO QDs的XRD谱" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.3" } ], "title": [ { "name": "text", "data": "XRD patterns of ZnO QDs and 3%Sm∶ZnO QDs" } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032334&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032337&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032336&type=", "width": "61.73471069", "height": "47.94743347", "fontsize": "" } ] } }, { "name": "p", "data": [ { "name": "xref", "data": { "text": "图4", "type": "fig", "rid": "F4", "data": [ { "name": "text", "data": "图4" } ] } }, { "name": "text", "data": "为Sm掺杂前后ZnO QDs的XPS的全谱扫描图谱，将285 eV的C 1s峰作为参考校准结合能标度。从" }, { "name": "xref", "data": { "text": "图4", "type": "fig", "rid": "F4", "data": [ { "name": "text", "data": "图4" } ] } }, { "name": "text", "data": "（a）全谱扫描中可以看出，掺杂后ZnO的XPS全谱扫描图谱中不仅存在Zn、O的峰，还出现了Sm的峰，进一步表明了Sm成功地掺杂进ZnO QDs中。" }, { "name": "xref", "data": { "text": "图4", "type": "fig", "rid": "F4", "data": [ { "name": "text", "data": "图4" } ] } }, { "name": "text", "data": "（b）为Zn 2p的图谱，其中位于1 021.5 eV和1 044.5 eV处的两个峰分别对应于Zn 2p3/2和Zn 2p1/2，两个峰之间的能量差为23 eV，接近于约22.97 eV的标准值，表明Zn的价态为+2价" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "29", "type": "bibr", "rid": "R29", "data": [ { "name": "text", "data": "29" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "30", "type": "bibr", "rid": "R30", "data": [ { "name": "text", "data": "30" } ] } } ], "rid": [ "R29", "R30" ], "text": "29-30", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。" }, { "name": "xref", "data": { "text": "图4", "type": "fig", "rid": "F4", "data": [ { "name": "text", "data": "图4" } ] } }, { "name": "text", "data": "（c）为Sm 3d的XPS图谱，位于1 083.3 eV和1 110.3 eV处的两个峰分别为Sm的3d5/2和3d3/2峰。通过Sm 3d的XPS图谱上的结合能和峰位可证实Sm是以Sm" }, { "name": "sup", "data": [ { "name": "text", "data": "3+" } ] }, { "name": "text", "data": "的形式存在" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "31", "type": "bibr", "rid": "R31", "data": [ { "name": "text", "data": "31" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。Sm 3d峰的自旋轨道分裂距离为27 eV，与其他Sm掺杂基质相吻合" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "32", "type": "bibr", "rid": "R32", "data": [ { "name": "text", "data": "32" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。" }, { "name": "xref", "data": { "text": "图4", "type": "fig", "rid": "F4", "data": [ { "name": "text", "data": "图4" } ] } }, { "name": "text", "data": "（d）为O 1s的XPS图谱。对光谱进行高斯拟合，得到两个峰，其中位于530.25 eV处的峰是由ZnO的晶格氧（O" }, { "name": "sub", "data": [ { "name": "text", "data": " L" } ] }, { "name": "text", "data": "）造成的，而位于531.59 eV的峰与ZnO的缺陷形成的V" }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "text", "data": "有关" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "31", "type": "bibr", "rid": "R31", "data": [ { "name": "text", "data": "31" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。在ZnO QDs中V" }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "text", "data": "约占47.2%，3%Sm∶ZnO QDs中" }, { "name": "italic", "data": [ { "name": "text", "data": "V" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "text", "data": "约占58.8%，具有高浓度的V" }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "32", "type": "bibr", "rid": "R32", "data": [ { "name": "text", "data": "32" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "33", "type": "bibr", "rid": "R33", "data": [ { "name": "text", "data": "33" } ] } } ], "rid": [ "R32", "R33" ], "text": "32-33", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。" } ] }, { "name": "fig", "data": { "id": "F4", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图4" } ], "title": [ { "name": "text", "data": "ZnO QDs和3%Sm∶ZnO QDs的XPS图谱。 （a）全谱扫描；（b）Zn 2p；（c）Sm 3d；（d）O 1s。" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.4" } ], "title": [ { "name": "text", "data": "XPS of ZnO QDs and 3% Sm∶ZnO QDs. （a）Full spectrum scan. （b）Zn 2p. （c）Sm 3d. （d）O 1s." } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032338&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032340&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032339&type=", "width": "127.60896301", "height": "93.25984192", "fontsize": "" } ] } }, { "name": "p", "data": [ { "name": "xref", "data": { "text": "图5", "type": "fig", "rid": "F5", "data": [ { "name": "text", "data": "图5" } ] } }, { "name": "text", "data": "为Sm∶ZnO QDs与Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的红外光谱。由" }, { "name": "xref", "data": { "text": "图5", "type": "fig", "rid": "F5", "data": [ { "name": "text", "data": "图5" } ] } }, { "name": "text", "data": "可见，3 436 cm" }, { "name": "sup", "data": [ { "name": "text", "data": "-1" } ] }, { "name": "text", "data": "处的宽吸收峰由O—H键的伸缩振动产生，1 634 cm" }, { "name": "sup", "data": [ { "name": "text", "data": "-1" } ] }, { "name": "text", "data": "和1 413 cm" }, { "name": "sup", "data": [ { "name": "text", "data": "-1" } ] }, { "name": "text", "data": "处的吸收峰与N—H键的弯曲振动所产生的吸收峰对应，而在453 cm" }, { "name": "sup", "data": [ { "name": "text", "data": "-1" } ] }, { "name": "text", "data": "处观察到一个明显的吸收峰，与ZnO的Zn—O键伸缩振动相对应。根据红外光谱分析，证明经过APTEs功能化的Sm∶ZnO QDs表面成功接上氨基（—NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "）。" } ] }, { "name": "fig", "data": { "id": "F5", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图5" } ], "title": [ { "name": "text", "data": "Sm∶ZnO QDs与Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的FT-IR图" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.5" } ], "title": [ { "name": "text", "data": "FT-IR spectra of Sm∶ZnO QDs and Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs" } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032341&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032343&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032342&type=", "width": "60.77899170", "height": "51.76133728", "fontsize": "" } ] } }, { "name": "p", "data": [ { "name": "text", "data": "将Sm掺杂量为3%的Sm∶ZnO QDs通过添加不同浓度的APTEs乙醇溶液，室温下搅拌反应2 h对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的制备条件进行优化，通过DLS表征，得到Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs分散在水溶液中的粒径分布图。" }, { "name": "xref", "data": { "text": "图6", "type": "fig", "rid": "F6", "data": [ { "name": "text", "data": "图6" } ] } }, { "name": "text", "data": "是Sm∶ZnO QDs和APTEs浓度分别为0，0.02，0.05，0.1 mol/L的粒径分布图，平均粒径约为8.62，7.04，5.17，35.8 nm。由" }, { "name": "xref", "data": { "text": "图6", "type": "fig", "rid": "F6", "data": [ { "name": "text", "data": "图6" } ] } }, { "name": "text", "data": "可知，未进行APTEs封端的裸露的Sm∶ZnO QDs粒径比APTEs浓度较小时包覆的Sm∶ ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的粒径大，这是因为Sm∶ ZnO QDs表面存在大量晶格缺陷，晶格配位不饱和表面活性高，导致其性能极其不稳定，容易团聚" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "34", "type": "bibr", "rid": "R34", "data": [ { "name": "text", "data": "34" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "35", "type": "bibr", "rid": "R35", "data": [ { "name": "text", "data": "35" } ] } } ], "rid": [ "R34", "R35" ], "text": "34-35", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。随着APTEs浓度的逐渐增加，Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的粒径先逐渐变小，当APTEs浓度等于0.05 mol/L时，粒径最小；继续提高APTEs的浓度，则粒径逐渐增大。其原因可能是APTEs的浓度大，导致Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs团聚" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "35", "type": "bibr", "rid": "R35", "data": [ { "name": "text", "data": "35" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "36", "type": "bibr", "rid": "R36", "data": [ { "name": "text", "data": "36" } ] } } ], "rid": [ "R35", "R36" ], "text": "35-36", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。说明APTEs的量对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的分散性及粒径有影响" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "36", "type": "bibr", "rid": "R36", "data": [ { "name": "text", "data": "36" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。" } ] }, { "name": "fig", "data": { "id": "F6", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图6" } ], "title": [ { "name": "text", "data": "不同浓度APTEs制备的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的DLS粒径分布图。 （a）0 mol/L；（b）0.02 mol/L；（c）0.05 mol/L；（d）0.1 mol/L。" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.6" } ], "title": [ { "name": "text", "data": "DLS of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs prepared with different concentrations of APTEs. （a）0 mol/L. （b）0.02 mol/L. （c）0.05 mol/L.（d）0.1 mol/L." } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032345&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032348&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032346&type=", "width": "130.04205322", "height": "104.58850098", "fontsize": "" } ] } }, { "name": "p", "data": [ { "name": "text", "data": "所制备样品ZnO QDs、3% Sm∶ZnO QDs、3% Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的量子产率分别为3.74%、13.04%、15.94%。根据量子产率结果可知，掺杂Sm之后量子产率增加，这可能是因为Sm∶ZnO QDs的可见光发射与表面缺陷和V" }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "text", "data": "有关，掺杂Sm之后导致Sm∶ZnO QDs的粒径减小、比表面积增大，形成更多的V" }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "text", "data": "和缺陷，进而显著提高了Sm∶ZnO QDs的量子产率" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "37", "type": "bibr", "rid": "R37", "data": [ { "name": "text", "data": "37" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。APTEs封端使Sm∶ZnO QDs表面接上—NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "可以提高其量子产率，这是因为量子点表面形成富氮基团—NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "，形成有利的发射态，从而增大了其荧光发射强度。" } ] }, { "name": "p", "data": [ { "name": "text", "data": "所制备样品的荧光寿命由FluoroMax-4荧光光谱仪自带的TCSPC荧光寿命检测配件检测得到。" }, { "name": "xref", "data": { "text": "图7", "type": "fig", "rid": "F7", "data": [ { "name": "text", "data": "图7" } ] } }, { "name": "text", "data": "为Sm∶ZnO QDs及Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光寿命衰减曲线，通过二阶函数进行拟合，拟合公式如下：" } ] }, { "name": "dispformula", "data": { "label": [ { "name": "text", "data": "（1）" } ], "data": [ { "name": "math", "data": { "math": "", "graphicsData": { "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032352&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032350&type=", "width": "48.85266495", "height": "12.61533356", "fontsize": "" } } }, { "name": "text", "data": "，" } ], "id": "DF1" } }, { "name": "dispformula", "data": { "label": [ { "name": "text", "data": "（2）" } ], "data": [ { "name": "math", "data": { "math": "", "graphicsData": { "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032358&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032354&type=", "width": "24.46866608", "height": "8.29733276", "fontsize": "" } } }, { "name": "text", "data": "，" } ], "id": "DF2" } }, { "name": "p", "data": [ { "name": "text", "data": "其中，" }, { "name": "italic", "data": [ { "name": "text", "data": "τ" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "1" } ] }, { "name": "text", "data": "和" }, { "name": "italic", "data": [ { "name": "text", "data": "τ" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "分别为荧光寿命的快组分和慢组分，" }, { "name": "italic", "data": [ { "name": "text", "data": "τ" } ] }, { "name": "text", "data": "为平均寿命。如" }, { "name": "xref", "data": { "text": "图7", "type": "fig", "rid": "F7", "data": [ { "name": "text", "data": "图7" } ] } }, { "name": "text", "data": "所示，经过二阶指数函数拟合，得到Sm∶ZnO QDs的荧光寿命为33.55 ns，而Sm∶ZnO QDs表面经过APTEs封端后的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2 " } ] }, { "name": "text", "data": "QDs荧光探针的荧光寿命为29.92 ns。这表明，利用APTEs对Sm∶ZnO QDs表面进行封端，在一定程度上改善了Sm∶ZnO QDs的辐射跃迁，减少了非辐射衰减的可能，从而改进了材料荧光的稳定性" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "38", "type": "bibr", "rid": "R38", "data": [ { "name": "text", "data": "38" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "39", "type": "bibr", "rid": "R39", "data": [ { "name": "text", "data": "39" } ] } } ], "rid": [ "R38", "R39" ], "text": "38-39", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。结合DLS结果分析，表明Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的尺寸越小，荧光寿命越短，这与Haranath" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "40", "type": "bibr", "rid": "R40", "data": [ { "name": "text", "data": "40" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "报道的结果一致。" } ] }, { "name": "fig", "data": { "id": "F7", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图7" } ], "title": [ { "name": "text", "data": "Sm∶ZnO QDs和Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光寿命衰减 曲线" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.7" } ], "title": [ { "name": "text", "data": "Fluorescence lifetime decay curves of Sm∶ZnO QDs and Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs" } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032360&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032363&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032361&type=", "width": "70.57675171", "height": "48.81333923", "fontsize": "" } ] } } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "3.2　荧光性能优化" } ], "level": "2", "id": "s3b" } }, { "name": "p", "data": [ { "name": "text", "data": "为获得具有最佳荧光性能的Sm∶ZnO QDs，实验考察了Sm掺杂量对ZnO QDs荧光性能的影响,其中，Sm掺杂量分别为0%、1%、2%、3%、4%、5%（见" }, { "name": "xref", "data": { "text": "图8", "type": "fig", "rid": "F8", "data": [ { "name": "text", "data": "图8" } ] } }, { "name": "text", "data": "）。通过荧光发射光谱可以观察到，当激发波长为383 nm时，ZnO QDs和Sm∶ZnO QDs的最佳发射波长为534 nm，发射出绿色荧光；并且随着Sm掺杂量的增加，荧光最佳发射强度显著增强。由" }, { "name": "xref", "data": { "text": "图8", "type": "fig", "rid": "F8", "data": [ { "name": "text", "data": "图8" } ] } }, { "name": "text", "data": "可知，Sm掺杂浓度为0~3%时，荧光强度随Sm掺杂量增加而增大；当Sm掺杂量为3%时，荧光强度达到最大值；继续增大Sm掺杂量，荧光强度开始逐渐下降。其原因可能是随Sm掺杂量的增加，Sm∶ZnO QDs缺陷浓度增加，Sm" }, { "name": "sup", "data": [ { "name": "text", "data": "3+" } ] }, { "name": "text", "data": "取代ZnO中的Zn" }, { "name": "sup", "data": [ { "name": "text", "data": "2+" } ] }, { "name": "text", "data": "，镧系离子的尺寸可极化性主导ZnO QDs晶体的尺寸变化，其V" }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "text", "data": "浓度随之增加" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "32", "type": "bibr", "rid": "R32", "data": [ { "name": "text", "data": "32" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。这表明通过掺杂Sm可以使ZnO QDs粒径减小，比表面积增加，有利于形成更多的空位和缺陷，从而有效增强ZnO QDs的荧光发射强度" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "16", "type": "bibr", "rid": "R16", "data": [ { "name": "text", "data": "16" } ] } }, { "name": "text", "data": ", " }, { "name": "xref", "data": { "text": "37", "type": "bibr", "rid": "R37", "data": [ { "name": "text", "data": "37" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。当Sm掺杂量继续增大时，过量的Sm" }, { "name": "sup", "data": [ { "name": "text", "data": "3+" } ] }, { "name": "text", "data": "会沉积在样品表面，导致表面缺陷浓度降低，从而降低了V" }, { "name": "sub", "data": [ { "name": "text", "data": "O" } ] }, { "name": "text", "data": "的浓度" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "37", "type": "bibr", "rid": "R37", "data": [ { "name": "text", "data": "37" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。上述结果表明，Sm的掺杂导致Sm∶ZnO QDs荧光发射增强，稀土离子Sm可能影响了ZnO QDs的发光机制。" } ] }, { "name": "fig", "data": { "id": "F8", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图8" } ], "title": [ { "name": "text", "data": "Sm∶ZnO QDs荧光发射光谱" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.8" } ], "title": [ { "name": "text", "data": "Fluorescence emission spectra of Sm∶ZnO QDs" } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032365&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032370&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032367&type=", "width": "68.34526062", "height": "47.99720764", "fontsize": "" } ] } }, { "name": "p", "data": [ { "name": "text", "data": "为了考察APTEs浓度对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光性能的影响，使用不同浓度APTEs对3% Sm∶ZnO QDs进行封端，结果如" }, { "name": "xref", "data": { "text": "图9", "type": "fig", "rid": "F9", "data": [ { "name": "text", "data": "图9" } ] } }, { "name": "text", "data": "（a）、（b）所示。从" }, { "name": "xref", "data": { "text": "图9", "type": "fig", "rid": "F9", "data": [ { "name": "text", "data": "图9" } ] } }, { "name": "text", "data": "（a）可以看出，APTEs浓度逐渐增大时，Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光强度逐渐增强；当APTEs浓度等于0.05 mol/L时，荧光强度最强；再继续增大其浓度时，荧光强度开始下降。其原因可能是：APTEs封端对Sm∶ZnO QDs表面有钝化作用，Sm∶ZnO QDs表面接上—NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "后，其表面缺陷得到钝化，不易团聚，进而增强其荧光强度；当APTEs浓度继续增大之后，APTEs浓度过量、涂层过厚会导致量子点发生自凝结团聚，其中不均匀的带壳颗粒开始彼此相互作用，形成强的团聚颗粒，Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的粒径开始变大并减少胶体分散" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "41", "type": "bibr", "rid": "R41", "data": [ { "name": "text", "data": "41" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "，这与DLS的表征结果一致。同时考察了不同浓度APTEs封端得到的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs对0.8 μg/mL的DA溶液平行三次进行荧光猝灭效率的影响，结果见" }, { "name": "xref", "data": { "text": "图9", "type": "fig", "rid": "F9", "data": [ { "name": "text", "data": "图9" } ] } }, { "name": "text", "data": "（b），其中插图为不同浓度APTEs封端的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs及Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs加入0.8 μg/mL DA前后的荧光强度比较。荧光猝灭效率由公式（" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "-" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "DA" } ] }, { "name": "text", "data": "）/" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "计算得到，其中" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "表示Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针在534 nm处的荧光强度，" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "DA" } ] }, { "name": "text", "data": "表示加入0.8 μg/mL的DA溶液后在534 nm处的荧光强度。结果表明，当APTEs浓度为0.05 mol/L时，其荧光猝灭效率最佳，同时，该浓度下APTEs乙醇溶液封端得到的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针也具有最强的荧光发射。" } ] }, { "name": "fig", "data": { "id": "F9", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图9" } ], "title": [ { "name": "text", "data": "不同浓度APTEs封端Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光性能。 （a）不同浓度APTEs封端的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的荧光发射光谱；（b）不同浓度APTEs封端的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs对0.8 μg/mL DA荧光猝灭效果。" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.9" } ], "title": [ { "name": "text", "data": "Fluorescence performance of APTEs terminated Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs at different concentrations. （a）Fluorescence emission spectra of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs terminated with different concentrations of APTEs. （b）Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs with different concentrations of APTEs on 0.8 μg/mL DA fluorescence quenching effect." } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032372&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032377&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032375&type=", "width": "152.33837891", "height": "49.06150818", "fontsize": "" } ] } }, { "name": "p", "data": [ { "name": "text", "data": "为了研究pH对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光猝灭效果的影响，实验考察了pH值为5~10时0.8 μg/mL DA对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光猝灭情况，结果见" }, { "name": "xref", "data": { "text": "图10", "type": "fig", "rid": "F10", "data": [ { "name": "text", "data": "图10" } ] } }, { "name": "text", "data": "。由" }, { "name": "xref", "data": { "text": "图10", "type": "fig", "rid": "F10", "data": [ { "name": "text", "data": "图10" } ] } }, { "name": "text", "data": "可知，pH值在5~10范围内，加入0.8 μg/mL DA后Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的荧光强度基本一致，在偏酸性时略低，在偏碱性时略强。" } ] }, { "name": "fig", "data": { "id": "F10", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图10" } ], "title": [ { "name": "text", "data": "不同pH时DA对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光猝灭效果（pH=5~10的Tris缓冲溶液，DA浓度：0.8 μg/mL）" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.10" } ], "title": [ { "name": "text", "data": "Fluorescence quenching effect of DA on Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs at different pH（Tris buffer solution with pH 5-10， DA concentration： 0.8 μg/mL）" } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032378&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032383&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032381&type=", "width": "66.16357422", "height": "49.43309021", "fontsize": "" } ] } } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "3.3　工作曲线建立" } ], "level": "2", "id": "s3c" } }, { "name": "p", "data": [ { "name": "text", "data": "在优化了荧光探针的制备条件后，本实验研究了Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光强度随DA浓度的变化规律。首先，将不同浓度的DA标准溶液（50~1 600 ng/mL）添加到Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针中，利用稳瞬态荧光光谱仪进行直接检测。不同浓度DA溶液下对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光检测结果如" }, { "name": "xref", "data": { "text": "图11", "type": "fig", "rid": "F11", "data": [ { "name": "text", "data": "图11" } ] } }, { "name": "text", "data": "所示。根据" }, { "name": "xref", "data": { "text": "图11", "type": "fig", "rid": "F11", "data": [ { "name": "text", "data": "图11" } ] } }, { "name": "text", "data": "可以看出，通过添加不同标准浓度的DA溶液，Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光强度逐渐减弱，但Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光发射峰的形状和位置并没有发生改变。如" }, { "name": "xref", "data": { "text": "图11", "type": "fig", "rid": "F11", "data": [ { "name": "text", "data": "图11" } ] } }, { "name": "text", "data": "（b）所示，通过（" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "-" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "text", "data": "）/" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "对DA浓度进行线性回归分析，在50~1 600 ng/mL范围内，DA浓度与（" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "-" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "text", "data": "）/" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "之间存在良好的线性关系，线性方程为" }, { "name": "italic", "data": [ { "name": "text", "data": "y" } ] }, { "name": "text", "data": "=0.4639" }, { "name": "italic", "data": [ { "name": "text", "data": "x" } ] }, { "name": "text", "data": " + 0.008530，相关系数" }, { "name": "italic", "data": [ { "name": "text", "data": "R" } ] }, { "name": "sup", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "=0.996 3，在" }, { "name": "italic", "data": [ { "name": "text", "data": "N/S" } ] }, { "name": "text", "data": "=3（" }, { "name": "italic", "data": [ { "name": "text", "data": "N" } ] }, { "name": "text", "data": "为空白样品荧光强度的标准偏差，" }, { "name": "italic", "data": [ { "name": "text", "data": "S" } ] }, { "name": "text", "data": "为猝灭常数）条件下，DA的LOD为1.08 ng/mL，这个结果表明Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs 荧光探针用于DA 溶液的检测具有良好的灵敏度。" } ] }, { "name": "fig", "data": { "id": "F11", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图11" } ], "title": [ { "name": "text", "data": "Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs对DA的荧光检测。 （a）荧光发射光谱（383 nm紫外光激发，最大发射波长" }, { "name": "italic", "data": [ { "name": "text", "data": "λ" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "em" } ] }, { "name": "text", "data": "=534 nm）；（b）DA的工作曲线（" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "表示空白样品，即没有添加DA时Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的荧光强度，" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "text", "data": "表示加入不同浓度DA溶液测试样品的荧光强度）。" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.11" } ], "title": [ { "name": "text", "data": "Fluorescence detection of DA by Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs. （a）Fluorescence emission spectra（" }, { "name": "italic", "data": [ { "name": "text", "data": "λ" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "ex" } ] }, { "name": "text", "data": "=383 nm， maximum " }, { "name": "italic", "data": [ { "name": "text", "data": "λ" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "em" } ] }, { "name": "text", "data": "=534 nm）. （b）The standard curve of DA（" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": " represents the blank sample， namely the fluorescence intensity of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs without DA addition， and " }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "text", "data": " indicates the fluorescence intensity of the test sample added with different concentrations of DA solution）." } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032385&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032389&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032387&type=", "width": "152.29733276", "height": "49.06150818", "fontsize": "" } ] } }, { "name": "p", "data": [ { "name": "xref", "data": { "text": "表1", "type": "table", "rid": "T1", "data": [ { "name": "text", "data": "表1" } ] } }, { "name": "text", "data": "列出了不同检测DA方法的比较。由" }, { "name": "xref", "data": { "text": "表1", "type": "table", "rid": "T1", "data": [ { "name": "text", "data": "表1" } ] } }, { "name": "text", "data": "可知，除电化学发光检测方法外，本文提供的基于Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的检测方法具有较低的检出限、较高的灵敏度。" } ] }, { "name": "table", "data": { "id": "T1", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "表1" } ], "title": [ { "name": "text", "data": "不同检测DA方法的比较" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Tab.1" } ], "title": [ { "name": "text", "data": "Comparison of different detection methods of DA" } ] } ], "note": [], "table": [ { "head": [ [ { "align": "center", "style": "border-top:solid;border-bottom:solid;", "data": [ { "name": "text", "data": "方法" } ] }, { "align": "center", "style": "border-top:solid;border-bottom:solid;", "data": [ { "name": "text", "data": "材料" } ] }, { "align": "center", "style": "border-top:solid;border-bottom:solid;", "data": [ { "name": "text", "data": "线性范围/（μg·mL" }, { "name": "sup", "data": [ { "name": "text", "data": "-1" } ] }, { "name": "text", "data": "）" } ] }, { "align": "center", "style": "border-top:solid;border-bottom:solid;", "data": [ { "name": "text", "data": "LOD/（ng·mL" }, { "name": "sup", "data": [ { "name": "text", "data": "-1" } ] }, { "name": "text", "data": "）" } ] }, { "align": "center", "style": "border-top:solid;border-bottom:solid;", "data": [ { "name": "text", "data": "参考文献" } ] } ] ], "body": [ [ { "align": "center", "data": [ { "name": "text", "data": "电化学发光检测" } ] }, { "align": "center", "data": [ { "name": "text", "data": "Au‐WS" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] } ] }, { "align": "center", "data": [ { "name": "text", "data": "0.8~306" } ] }, { "align": "center", "data": [ { "name": "text", "data": "0.50" } ] }, { "align": "center", "data": [ { "name": "text", "data": "［" }, { "name": "xref", 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"data": "［" }, { "name": "xref", "data": { "text": "44", "type": "bibr", "rid": "R44", "data": [ { "name": "text", "data": "44" } ] } }, { "name": "text", "data": "］" } ] } ], [ { "align": "center", "data": [ { "name": "text", "data": "比色法" } ] }, { "align": "center", "data": [ { "name": "text", "data": "金纳米棒" } ] }, { "align": "center", "data": [ { "name": "text", "data": "1.23~9.20" } ] }, { "align": "center", "data": [ { "name": "text", "data": "95.0" } ] }, { "align": "center", "data": [ { "name": "text", "data": "［" }, { "name": "xref", "data": { "text": "45", "type": "bibr", "rid": "R45", "data": [ { "name": "text", "data": "45" } ] } }, { "name": "text", "data": "］" } ] } ], [ { "align": "center", "data": [ { "name": "text", "data": "荧光法" } ] }, { "align": "center", "data": [ { "name": "text", "data": "MoS" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] } ] }, { "align": "center", "data": [ { "name": "text", "data": "3.06~7.66" } ] }, { "align": "center", "data": [ { "name": "text", "data": "4.14" } ] }, { "align": "center", "data": [ { "name": "text", "data": "［" }, { "name": "xref", "data": { "text": "24", "type": "bibr", "rid": "R24", "data": [ { "name": "text", "data": "24" } ] } }, { "name": "text", "data": "］" } ] } ], [ { "align": "center", "data": [ { "name": "text", "data": "荧光法" } ] }, { "align": "center", "data": [ { "name": "text", "data": "ZnO QDs" } ] }, { "align": "center", "data": [ { "name": "text", "data": "1.53~7.66" } ] }, { "align": "center", "data": [ { "name": "text", "data": "1.84" } ] }, { "align": "center", "data": [ { "name": "text", "data": "［" }, { "name": "xref", "data": { "text": "25", "type": "bibr", "rid": "R25", "data": [ { "name": "text", "data": "25" } ] } }, { "name": "text", "data": "］" } ] } ], [ { "align": "center", "style": "border-bottom:solid;", "data": [ { "name": "text", "data": "荧光法" } ] }, { "align": "center", "style": "border-bottom:solid;", "data": [ { "name": "text", "data": "Sm∶ZnO⁃NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs" } ] }, { "align": "center", "style": "border-bottom:solid;", "data": [ { "name": "text", "data": "0.05~1.60" } ] }, { "align": "center", "style": "border-bottom:solid;", "data": [ { "name": "text", "data": "1.08" } ] }, { "align": "center", "style": "border-bottom:solid;", "data": [ { "name": "text", "data": "本文" } ] } ] ], "foot": [] } ], "graphics": { "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032394&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032391&type=", "width": "162.79998779", "height": "46.83508301", "fontsize": "" } } } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "3.4　Sm∶ZnO‐NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的重现性" } ], "level": "2", "id": "s3d" } }, { "name": "p", "data": [ { "name": "text", "data": "为了确保Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针定量检测结果的准确性，考察了其检测结果的重现性。" } ] }, { "name": "p", "data": [ { "name": "text", "data": "将8个不同批次制备的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针分别对同一浓度DA样品（1.0 μg/mL）进行荧光检测。检测结果如" }, { "name": "xref", "data": { "text": "图12", "type": "fig", "rid": "F12", "data": [ { "name": "text", "data": "图12" } ] } }, { "name": "text", "data": "（a），每个样品平行检测三次，相对标准偏差RSD均小于1%。将8个样品检测结果平均值计算相对标准偏差，得到RSD为0.42%。另将同一批次制备的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针平行检测8次同一浓度DA样品（1.0 μg/mL），检测结果如" }, { "name": "xref", "data": { "text": "图12", "type": "fig", "rid": "F12", "data": [ { "name": "text", "data": "图12" } ] } }, { "name": "text", "data": "（b）所示，得到RSD为0.41%。上述实验结果说明该荧光探针具有较好的重现性。" } ] }, { "name": "fig", "data": { "id": "F12", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图12" } ], "title": [ { "name": "text", "data": "Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的重现性实验，" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "表示Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的荧光强度，" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "text", "data": "表示加入1.0 μg/mL DA溶液测试样品的荧光强度。 （a）不同批次Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的重现性； （b）同一批次Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的重现性。" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.12" } ], "title": [ { "name": "text", "data": "Reproducibility experiment of the Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs， " }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": " indicates the fluorescence intensity of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs， and " }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "text", "data": " indicates the fluorescence intensity of the test sample supplemented with 1.0 μg/mL of DA solution. （a）The reproducibility of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs between different batch. （b）The reproducibility of Sm∶ZnO⁃NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs within the same batch." } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032397&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032403&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032400&type=", "width": "140.86053467", "height": "49.15159607", "fontsize": "" } ] } } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "3.5　Sm∶ZnO⁃NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的选择性" } ], "level": "2", "id": "s3e" } }, { "name": "p", "data": [ { "name": "text", "data": "本实验采用在体系中分别添加尿酸（UA）、半胱氨酸（Cys）、赖氨酸（Lys）、精氨酸（Arg）、苯丙氨酸（Phe）、氯化钠（NaCl）、氯化钾（KCl）、葡萄糖（GLs）、尿素（Urea）、草酸（OA）、酒石酸（TA）、抗坏血酸（AA）和组氨酸（HIS）等干扰物质，对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的选择性进行评估，评估结果如" }, { "name": "xref", "data": { "text": "图13", "type": "fig", "rid": "F13", "data": [ { "name": "text", "data": "图13" } ] } }, { "name": "text", "data": "（a）所示。结果表明，上述各干扰物质均对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光没有明显影响。上述各干扰物质分别与DA同时存在时，对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针进行荧光检测，结果如" }, { "name": "xref", "data": { "text": "图13", "type": "fig", "rid": "F13", "data": [ { "name": "text", "data": "图13" } ] } }, { "name": "text", "data": "（b）所示，发现干扰物质的存在对DA猝灭Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光响应值相差不大，即干扰物质的存在对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针检测DA含量的结果不产生影响。" }, { "name": "xref", "data": { "text": "图13", "type": "fig", "rid": "F13", "data": [ { "name": "text", "data": "图13" } ] } }, { "name": "text", "data": "充分表明，该荧光探针对DA检测具有良好的选择性。" } ] }, { "name": "fig", "data": { "id": "F13", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图13" } ], "title": [ { "name": "text", "data": "Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs选择性荧光猝灭实验（干扰物质浓度：200 μg/mL；DA浓度：1.0 μg/mL）。 （a）Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针对干扰物质的荧光响应，纵坐标Δ" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "text", "data": "=" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "-" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "1" } ] }, { "name": "text", "data": "，" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "表示Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs溶液的荧光强度，" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "1" } ] }, { "name": "text", "data": "表示加入不同干扰物质后Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs溶液的荧光强度；（b）各干扰物质存在下Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针对DA的检测，纵坐标Δ" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "text", "data": "′=" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "-" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "，" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "表示Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs溶液的荧光强度，" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "表示不同干扰物质 + Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的溶液加入DA后的荧光强度。" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig.13" } ], "title": [ { "name": "text", "data": "Selective fluorescence quenching experiment of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs（concentration of interfering substances： 200 μg/mL， concentration of DA： 1.0 μg/mL）. （a）Fluorescence response of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs to interfering substances， the vertical coordinate Δ" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "text", "data": "=" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0 " } ] }, { "name": "text", "data": "-" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "1" } ] }, { "name": "text", "data": "， " }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": " indicates the fluorescence intensity of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs solution， " }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "1" } ] }, { "name": "text", "data": " indicates the fluorescence intensity of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs solution after adding different interfering substances. （b）Detection of DA by Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs in the presence of various interfering substances， the vertical coordinate Δ" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "text", "data": "′=" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": "-" }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "， " }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "0" } ] }, { "name": "text", "data": " represents the fluorescence intensity of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs solution， " }, { "name": "italic", "data": [ { "name": "text", "data": "F" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " represents the fluorescence intensity of different interfering substances + Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs solutions after DA is added." } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032406&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032412&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032409&type=", "width": "143.85314941", "height": "45.41172791", "fontsize": "" } ] } } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "3.6　Sm∶ZnO⁃NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的稳定性" } ], "level": "2", "id": "s3f" } }, { "name": "p", "data": [ { "name": "text", "data": "为了评估Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针在水溶液中的稳定性，实验考察了Sm∶ZnO QDs、Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs和荧光探针Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs+DA分别溶于水后其荧光强度在240 min内的变化情况。由" }, { "name": "xref", "data": { "text": "图14", "type": "fig", "rid": "F14", "data": [ { "name": "text", "data": "图14" } ] } }, { "name": "text", "data": "（a）可见，Sm∶ZnO QDs的水溶液在240 min内荧光强度只剩下15%，几乎完全猝灭；Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的水溶液在240 min内荧光强度保持不变，荧光性能稳定；Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs + DA溶液的荧光强度在240 min内保持不变。Sm∶ZnO QDs在水中荧光猝灭的原因可能是Sm∶ZnO QDs粒径小、比表面积大、表面活化能高，其表面未经修饰时在水溶液中不稳定，容易发生团聚，随着颗粒的生长表面积和表面缺陷状态的降低，从而发生荧光猝灭" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "41", "type": "bibr", "rid": "R41", "data": [ { "name": "text", "data": "41" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "。而经过APTEs封端，在Sm∶ZnO QDs表面接上—NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "之后，降低了表面活化能，钝化了其表面缺陷" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "blockXref", "data": { "data": [ { "name": "xref", "data": { "text": "46", "type": "bibr", "rid": "R46", "data": [ { "name": "text", "data": "46" } ] } }, { "name": "text", "data": "-" }, { "name": "xref", "data": { "text": "48", "type": "bibr", "rid": "R48", "data": [ { "name": "text", "data": "48" } ] } } ], "rid": [ "R46", "R47", "R48" ], "text": "46-48", "type": "bibr" } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "，从而阻止了Sm∶ZnO QDs发生团聚，所以经过APTEs表面修饰的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针在水溶液中荧光性能较稳定。" } ] }, { "name": "fig", "data": { "id": "F14", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "图14" } ], "title": [ { "name": "text", "data": "Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs在水中的荧光稳定性实验（DA浓度：1.0 μg/mL）。 （a）Sm∶ZnO QDs、Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs和Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs DA在水中的荧光稳定性；（b）10 d内Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs及添加DA后Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光稳定性。" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Fig. 14" } ], "title": [ { "name": "text", "data": "Fluorescence stability experiments of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs in water（concentration of DA： 1.0 μg/mL）. （a）Fluorescence stability in water. （b）Fluorescence stability of Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs and Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs fluorescent probe with DA within 10 d." } ] } ], "subcaption": [], "note": [], "graphics": [ { "print": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032415&type=", "small": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032422&type=", "big": "http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=41032418&type=", "width": "139.63598633", "height": "48.97971344", "fontsize": "" } ] } }, { "name": "p", "data": [ { "name": "text", "data": "实验还研究了Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针储存一定时间后的荧光性能及其被DA猝灭的效果（" }, { "name": "xref", "data": { "text": "图14", "type": "fig", "rid": "F14", "data": [ { "name": "text", "data": "图14" } ] } }, { "name": "text", "data": "（b）），结果表明，储存10 d的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光强度仍保持92%，DA对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光猝灭效果也没有发生显著变化。因此，研究表明对Sm∶ZnO QDs表面进行APTEs封端连接—NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "不仅有效限制了Sm∶ZnO QDs的生长并钝化了其表面缺陷" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "41", "type": "bibr", "rid": "R41", "data": [ { "name": "text", "data": "41" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "，而且使得Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针在相当长的时间内具有优异的荧光性能稳定性。" } ] } ] }, { "name": "sec", "data": [ { "name": "sectitle", "data": { "title": [ { "name": "text", "data": "3.7　实际样品检测" } ], "level": "2", "id": "s3g" } }, { "name": "p", "data": [ { "name": "text", "data": "实验还利用所建立的荧光分析方法应用于健康志愿者的尿液中DA的检测，并进行加标回收实验（结果见" }, { "name": "xref", "data": { "text": "表2", "type": "table", "rid": "T2", "data": [ { "name": "text", "data": "表2" } ] } }, { "name": "text", "data": "）。实验检测结果为：健康志愿者的尿液中DA含量分别为73.45 ng/mL、93.17 ng/mL，通过加标回收实验，回收率在98.18%~107.84%范围内。健康人尿液中的DA浓度在65.87~265.0 ng/mL范围内" }, { "name": "sup", "data": [ { "name": "text", "data": "[" }, { "name": "xref", "data": { "text": "45", "type": "bibr", "rid": "R45", "data": [ { "name": "text", "data": "45" } ] } }, { "name": "text", "data": "]" } ] }, { "name": "text", "data": "，而实验检测结果在该范围之内，表明所建立的Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针可应用于DA的定量检测。" } ] }, { "name": "table", "data": { "id": "T2", "caption": [ { "lang": "zh", "label": [ { "name": "text", "data": "表2" } ], "title": [ { "name": "text", "data": "采用标准添加法测定健康成人尿液中的DA（" }, { "name": "italic", "data": [ { "name": "text", "data": "n" } ] }, { "name": "text", "data": "=3）" } ] }, { "lang": "en", "label": [ { "name": "text", "data": "Tab.2" } ], "title": [ { "name": "text", "data": "Determination of DA in urine of healthy adults by standard addition method（" }, { "name": "italic", "data": [ { "name": "text", "data": "n" } ] }, { "name": "text", "data": "=3）" } ] } ], "note": [], "table": [ { "head": [ [ { "align": "center", "style": "border-top:solid;border-bottom:solid;", "data": [ { "name": "text", "data": "样品" } ] }, { "align": "center", "style": "border-top:solid;border-bottom:solid;", "data": [ { "name": "p", "data": [ { "name": "text", "data": "检测量" }, { "name": "italic", "data": [ { "name": "text", "data": "C" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "1" } ] }, { "name": "text", "data": "/" } ] }, { "name": "p", "data": [ { "name": "text", "data": "（μg·mL" }, { "name": "sup", "data": [ { "name": "text", "data": "-1" } ] }, { "name": "text", "data": "）" } ] } ] }, { "align": "center", "style": "border-top:solid;border-bottom:solid;", "data": [ { "name": "p", "data": [ { "name": "text", "data": "添加量" }, { "name": "italic", "data": [ { "name": "text", "data": "C" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "3" } ] }, { "name": "text", "data": "/" } ] }, { "name": "p", "data": [ { "name": "text", "data": "（μg·mL" }, { "name": "sup", "data": [ { "name": "text", "data": "-1" } ] }, { "name": "text", "data": "）" } ] } ] }, { "align": "center", "style": "border-top:solid;border-bottom:solid;", "data": [ { "name": "p", "data": [ { "name": "text", "data": "检测值" }, { "name": "italic", "data": [ { "name": "text", "data": "C" } ] }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": "/" } ] }, { "name": "p", "data": [ { "name": "text", "data": "（μg·mL" }, { "name": "sup", "data": [ { "name": "text", "data": "-1" } ] }, { "name": "text", "data": "）" } ] } ] }, { "align": "center", "style": "border-top:solid;border-bottom:solid;", "data": [ { "name": "p", "data": [ { "name": "text", "data": "回收率" }, { "name": "italic", "data": [ { "name": "text", "data": "P" } ] }, { "name": "text", "data": "=（" }, { "name": "italic", "data": [ { "name": "text", "data": "C" } ] }, { "name": "sub", "data": [ { "name": "text", 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QDs在水溶液中的荧光稳定性能。Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs溶于水溶液中，在240 min内其荧光强度几乎不变。在4 ℃下储存10 d后，其荧光强度仍保持92%，DA对Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs的荧光猝灭效果也没有发生显著变化。 （3）基于Sm∶ZnO-NH" }, { "name": "sub", "data": [ { "name": "text", "data": "2" } ] }, { "name": "text", "data": " QDs荧光探针的荧光可以直接被DA选择性猝灭效应，建立了一种选择性检测DA含量的荧光分析新方法，在50~1 600 ng/mL浓度内，该方法呈现良好的线性关系，且具有较好的稳定性和重现性，并成功应用于对人体尿液样品的检测。" } ] } ] } ], "footnote": [], "reflist": { "title": [ { "name": "text", "data": "参考文献" } ], "data": [ { "id": "R1", "label": "1", "citation": [ { "lang": "en", "text": [ { "name": "text", "data": "ENSAFI A A" }, { "name": "text", "data": "， " }, { "name": "text", "data": "ZAKERY M" }, { "name": "text", "data": "， " }, { "name": "text", "data": "REZAEI B" }, { "name": "text", "data": ". 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