浏览全部资源
扫码关注微信
1. 四川师范大学 化学学院, 四川 成都 610068
2. 四川大学 化学学院,四川 成都,610065
纸质出版日期:2016-1-10,
收稿日期:2015-9-26,
修回日期:2015-11-11,
扫 描 看 全 文
熊小莉, 唐艳, 薛康等. DMF保护的荧光银纳米簇的制备及其对Hg<sup>2+</sup>浓度的检测[J]. 发光学报, 2016,37(1): 117-123
XIONG Xiao-li, TANG Yan, XUE Kang etc. Preparation of Fluorescent Silver Nanoclusters Protected by DMF and Its Application in Hg<sup>2+</sup> Detection[J]. Chinese Journal of Luminescence, 2016,37(1): 117-123
熊小莉, 唐艳, 薛康等. DMF保护的荧光银纳米簇的制备及其对Hg<sup>2+</sup>浓度的检测[J]. 发光学报, 2016,37(1): 117-123 DOI: 10.3788/fgxb20163701.0117.
XIONG Xiao-li, TANG Yan, XUE Kang etc. Preparation of Fluorescent Silver Nanoclusters Protected by DMF and Its Application in Hg<sup>2+</sup> Detection[J]. Chinese Journal of Luminescence, 2016,37(1): 117-123 DOI: 10.3788/fgxb20163701.0117.
采用N
N-二甲基甲酰胺(DMF)作为还原剂和保护剂
在140 ℃下回流反应
简便合成了荧光银纳米簇(DMF-AgNCs)。通过高分辨率透射电镜(HRTEM)、紫外-吸收光谱、荧光光谱对DMF-AgNCs进行了表征。研究发现
Hg
2+
会使DMF-AgNCs聚集而猝灭荧光。基于此
建立了一种快速、灵敏检测Hg
2+
的新方法。在最佳实验条件下
Hg
2+
溶液浓度与DMF-AgNCs荧光强度在5.010
-9
~1.510
-7
mol/L范围内呈良好的线性关系
检测限为3.010
-9
mol/L
线性相关系数为0.995 8。该方法可用于环境水样中Hg
2+
的检测。
A facile preparation of highly fluorescent Ag nanoclusters (AgNCs) was synthesized using a surfactant-free N
N-dimethylformamide (DMF) reduction method by reflux at 140 ℃. The as-prepared samples were characterized by UV-Vis absorbtion spectroscopy
fluorescence spectroscopy and HRTEM. The results show that the AgNCs with small size emit strong blue fluorescence possessing excellent water-solubility and photostability. Moreover
the fluorescence from AgNCs can be efficiently quenched by Hg
2+
. By virtue of the specific response
a new
simple
selective and sensitive fluorescent method for detecting Hg
2+
has been developed based on DMF-AgNCs. This method shows a good linear relationship within the concentration range of 5.010
-9
~1.510
-7
mol/L
the detection limit was 3.010
-9
mol/L
and the correlation coefficient
R
2
= 0.995 8.
NN- 二甲基甲酰胺荧光银纳米簇Hg2+
NN-dimethylformamide (DMF)fluorescenceAg nanoclusters (AgNCs)Hg2+
TEMPLETON A C, WUELFING M P, MURRAY R W. Monolayer-protected cluster molecules [J]. Acc. Chem. Res., 2000, 33:27-36.
ARAGAY G, PONS J, MERKOI A. Recent trends in macro-, micro-, and nanomaterial-based tools and strategies for heavy-metal detection [J]. Chem. Rev., 2011, 111:3433-3458.
ROSI N L, MIRKIN C A. Nanostructures in biodiagnostics [J]. Chem. Rev., 2005, 105:1547-1562.
ZHANG L B, WANG E K. Metal nanoclusters: new fluorescent probes for sensors and bioimaging [J]. Nano Today, 2014, 9:132-157.
XU H X, SUSLICK K S. Sonochemical synthesis of highly fluorescent Ag nanoclusters [J]. Adv. Mater., 2010, 22:1078-1082.
TAY C, YU Y, Setyawati M, et al.. Presentation matters: identity of gold nanocluster capping agent governs intracellular uptake and cell metabolism [J]. Nano Res., 2014, 7:805-815.
UDAYABHASKARARAO T, PRADEEP T. New protocols for the synthesis of stable Ag and Au nanocluster molecules [J]. J. Phys. Chem. Lett., 2013, 4:1553-1564.
YU Y, YAO Q, LUO Z, et al.. Precursor engineering and controlled conversion for the synthesis of monodisperse thiolate-protected metal nanoclusters [J]. Nanoscale, 2013, 5:4606-4620.
ZHENG J, ZHOU C, YU M, et al.. Different sized luminescent gold nanoparticles [J]. Nanoscale, 2012, 4:4073-4083.
GUO W W, YUAN J P, WANG E K. Oligonucleotide-stabilized Ag nanoclusters as novel fluorescence probes for the highly selective and sensitive detection of the Hg2+ ion [J]. Chem. Commun., 2009, 23:3395-3397.
WANG C X, XU L, WANG Y, et al.. Fluorescent silver nanoclusters as effective probes for highly selective detection of mercury(Ⅱ) at parts-per-billion levels [J]. Chem. Asian. J., 2012, 7:1652-1656.
PETTY J T, ZHENG J, HUD N V, et al.. DNA-templated Ag nanocluster formation [J]. J. Am. Chem. Soc., 2004, 126:5207-5212.
KAWASAKI H, YAMAMOTO H, FUJIMORI H, et al.. Stability of the DMF-protected Au nanoclusters: photochemical, dispersion, and thermal properties [J]. Langmuir, 2010, 26:5926-5933.
LIU X, LI C, XU J, et al.. Surfactant-free synthesis and functionalization of highly fluorescent gold quantum dots [J]. J. Phys. Chem. C, 2008, 112:10778-11783.
KUMAR S, BOLAN M D, BIGIONI T P. Glutathione-stabilized magic-number silver cluster compounds [J]. J. Am. Chem. Soc., 2010, 132:13141-13143.
PARK J H, LEE J Y, BAN C G, et al.. An approach toward SNP detection by modulating the fluorescence of DNA-templated silver nanoclusters [J]. Biosens. Bioelectron., 2013, 43:19-24.
LIU J, REN X G, MENG X W, et al.. Sensitive and selective detection of Hg2+ and Cu2+ ions by fluorescent Ag nanoclusters synthesized via a hydrothermal method [J]. Nanoscale, 2013, 5:10022-10028.
SHARMA J W, ROCHA R C, PHIPPS M L, et al.. A DNA-templated fluorescent silver nanocluster with enhanced stability [J]. Nanoscale, 2012, 4:4107-4110.
LIN Y H, TSENG W L. Ultrasensitive sensing of Hg2+ and CH3Hg+ based on the fluorescence quenching of lysozyme type VI-stabilized gold nanoclusters [J]. Anal. Chem., 2010, 82:9194-9200.
TIAN D H, QIAN Z S, XIA Y S, et al.. Gold nanocluster-based fluorescent probes for near-infrared and turn-on sensing of glutathione in living cells [J]. Langmuir, 2012, 28:3945-3951.
PENG J, LING J, ZHANG X Q, et al.. Sensitive detection of mercury and copper ions by fluorescent DNA/Ag nanoclusters in guanine-rich DNA hybridization [J]. Spectrochim. Acta A, 2015, 137:1250-1257.
0
浏览量
87
下载量
2
CSCD
关联资源
相关文章
相关作者
相关机构