| 水溶性CdTe@PVP量子点在银离子测定中的荧光特性 |
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| 引用本文： | 沈晓芳.水溶性CdTe@PVP量子点在银离子测定中的荧光特性[J].光谱实验室,2011,28(6):2977-2979. |
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| 作者姓名： | 沈晓芳 |
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| 作者单位： | 江南大学食品学院 江苏省无锡市蠡湖大道1800号214122 |
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| 基金项目： | 国家自然科学基金(No.21005032); 中央高校基本科研业务费专项资金(JUSRP10918,JUSRP10920) |
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| 摘 要： | 水相快速合成CdTe@PVP量子点,其平均粒径为2.6nm,荧光量子产率为47.4％,半峰宽为35.8nm.基于银离子对CdTe@PVP量子点的荧光猝灭作用,建立该量子点作为荧光探针测定银离子的新荧光分析法.在银离子浓度为2.5-17.5μmol·L-1的范围内具有良好的线性关系,相关系数r为0.9999,RSD值为0...
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| 关 键 词： | 聚乙烯吡咯烷酮 CdTe 量子点 荧光光谱 银离子 |
Fluorescence Characteristic in Determination of Silver Ions by Water Solubility CdTe@PVP Quantum Dots |
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| SHEN Xiao-Fang.Fluorescence Characteristic in Determination of Silver Ions by Water Solubility CdTe@PVP Quantum Dots[J].Chinese Journal of Spectroscopy Laboratory,2011,28(6):2977-2979. |
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| Authors: | SHEN Xiao-Fang |
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| Institution: | SHEN Xiao-Fang(School of Food Science and Technology,Jiangnan University,Wuxi,Jiangsu 214122,P.R.China) |
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| Abstract: | CdTe@PVP quantum dots(CdTe@PVP QDs) were prepared by water-phase synthesis method.The average grain diameter of CdTe@PVP QDs was 2.6nm,and the fluorescent quantum yield was 47.4%,while the half bandwidths wavelength was 35.8nm.Based on the significant quenching effect of silver ion on the fluorescence of CdTe@PVP QDs,a novel method for determination of silver ion was developed with CdTe@PVP QDs as fluorescence probe.There was a good linear relationship for the concentration of silver ion in the range of 2.5... |
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| Keywords: | PVP CdTe Quantum Dots Fluorescence Spectra Silver Ions |
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