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1.广西科技大学 生物与化学工程学院, 广西糖资源绿色加工重点实验室, 广西 柳州 545006
2.蔗糖产业省部共建协同创新中心, 广西 南宁 530004
[ "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" ]
[ "黄文艺(1975-),男,广西南宁人,博士,高级实验师,2009年于南京大学获得博士学位,主要从事纳米材料方面的研究。E-mail:hwylz18@163.com" ]
纸质出版日期:2023-02-05,
收稿日期:2022-08-22,
修回日期:2022-09-12,
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崔美佳,黄秋梅,黄文艺等.水溶性Sm∶ZnO⁃NH2量子点荧光探针制备及其用于选择性检测多巴胺[J].发光学报,2023,44(02):374-386.
CUI Meijia,HUANG Qiumei,HUANG Wenyi,et al.Preparation of Water-soluble Sm∶ZnO-NH2 QDs Fluorescent Probe and Its Application for Selective Detection of Dopamine[J].Chinese Journal of Luminescence,2023,44(02):374-386.
崔美佳,黄秋梅,黄文艺等.水溶性Sm∶ZnO⁃NH2量子点荧光探针制备及其用于选择性检测多巴胺[J].发光学报,2023,44(02):374-386. DOI: 10.37188/CJL.20220296.
CUI Meijia,HUANG Qiumei,HUANG Wenyi,et al.Preparation of Water-soluble Sm∶ZnO-NH2 QDs Fluorescent Probe and Its Application for Selective Detection of Dopamine[J].Chinese Journal of Luminescence,2023,44(02):374-386. DOI: 10.37188/CJL.20220296.
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
2
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(
y
=0.4639
x
+ 0.008530,
R
2
=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%。
In this paper, a water-soluble Sm∶ZnO-NH
2
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),
etc
. 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(
y
=0.46393
x
+0.008530,
R
2
=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%.
Sm掺杂ZnO-NH2 QDs荧光探针选择性猝灭多巴胺
Sm dopedZnO-NH2 QDsfluorescence probeselective quenchingdopamine
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