DMF保护的荧光银纳米簇的制备及其对Hg2+浓度的检测

熊小莉; 唐艳; 薛康; 尤超; 郑保战

doi:10.3788/fgxb20163701.0117

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DMF保护的荧光银纳米簇的制备及其对Hg²⁺浓度的检测

发光学应用及交叉前沿 | 更新时间：2020-08-12

- DMF保护的荧光银纳米簇的制备及其对Hg²⁺浓度的检测
- Preparation of Fluorescent Silver Nanoclusters Protected by DMF and Its Application in Hg²⁺ Detection
- 发光学报 2016年37卷第1期页码：117-123
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
  
  国家自然科学基金(21407109)();四川省教育厅重点项目基金(14ZA0027)();四川师范大学大精设备开放基金项目(2015)资助()
- DOI：10.3788/fgxb20163701.0117
  中图分类号： O657.39
- 纸质出版日期：2016-1-10，
  
  收稿日期：2015-9-26，
  
  修回日期：2015-11-11，
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熊小莉, 唐艳, 薛康等. DMF保护的荧光银纳米簇的制备及其对Hg2+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 Hg2+ 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Hg2+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 Hg2+ Detection[J]. Chinese Journal of Luminescence, 2016,37(1): 117-123 DOI： 10.3788/fgxb20163701.0117.

摘要

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

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

的新方法。在最佳实验条件下

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

的检测。

Abstract

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

. By virtue of the specific response

a new

simple

selective and sensitive fluorescent method for detecting Hg

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

= 0.995 8.

关键词

NN- 二甲基甲酰胺荧光银纳米簇Hg2+

Keywords

NN-dimethylformamide (DMF)fluorescenceAg nanoclusters (AgNCs)Hg2+

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