近红外发射CdSeTe量子点测定铜离子

刘声燕; 王益林; 杨昆

doi:10.3788/fgxb20143502.0257

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近红外发射CdSeTe量子点测定铜离子

发光学应用及交叉前沿 | 更新时间：2020-08-12

- 近红外发射CdSeTe量子点测定铜离子
- Determination of Copper Ion by Near-infrared-emitting CdSeTe Quantum Dots
- 发光学报 2014年35卷第2期页码：257-262
- 作者机构：
  
  广西大学化学化工学院, 广西南宁 530004
- 作者简介：
- 基金信息：
  
  广西壮族自治区教育厅科研基金（2013YB014）资助项目()
- DOI：10.3788/fgxb20143502.0257
  中图分类号： O654
- 收稿日期：2013-10-09，
  
  修回日期：2013-11-08，
  
  纸质出版日期：2014-02-03
- 稿件说明：
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刘声燕, 王益林, 杨昆. 近红外发射CdSeTe量子点测定铜离子[J]. 发光学报, 2014,35(2): 257-262

LIU Sheng-yan, WANG Yi-lin, YANG Kun. Determination of Copper Ion by Near-infrared-emitting CdSeTe Quantum Dots[J]. Chinese Journal of Luminescence, 2014,35(2): 257-262
刘声燕, 王益林, 杨昆. 近红外发射CdSeTe量子点测定铜离子[J]. 发光学报, 2014,35(2): 257-262 DOI： 10.3788/fgxb20143502.0257.

LIU Sheng-yan, WANG Yi-lin, YANG Kun. Determination of Copper Ion by Near-infrared-emitting CdSeTe Quantum Dots[J]. Chinese Journal of Luminescence, 2014,35(2): 257-262 DOI： 10.3788/fgxb20143502.0257.

摘要

以CdCl

2.5H

O、Na

SeO

、Na

TeO

和N

O为反应物，以3-巯基丙酸（MPA）为稳定剂制备CdSeTe量子点。与CdTe量子点相比，CdSeTe合金量子点的发射光谱明显红移，发光颜色可扩展至近红外波段范围。基于铜离子能有效猝灭CdSeTe合金量子点荧光的特性，开发了一种用近红外CdSeTe量子点为荧光探针测定铜离子浓度的分析方法。在最佳实验条件下，该方法的线性检测范围为10～200 g/L，检测上限为1.13 g/L。应用于实际样品中铜的测定，结果与ICP测定值非常吻合。

Abstract

CdSeTe quantum dots (QDs) were synthesized by the reaction of CdCl

2.5H

SeO

TeO

and N

O in water and in the presence of 3-mercaptopropionic acid (MPA) as stabilizer. Comparing with the CdTe QDs

the CdSeTe alloy QDs showed an obvious red-shifted emission with the color-tune capability to the near-infrared (NIR) wavelength. The fluorescence of the CdSeTe QDs could be quenched by Cu

ions. A simple and rapid method for Cu

ions determination was proposed using the NIR CdSeTe QDs as fluorescent probes. Under optimal conditions

the response was linearly proportional to the concentration of Cu

ions from 10 to 200 g/L

the limit of detection was 1.13 g/L. The developed method was successfully applied to the detection of trace Cu in real samples

and the results coincided with the ICP method.

关键词

Keywords

references

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