溶剂热法制备的二硫化钼量子点在多巴胺荧光检测中的应用

吴静燕; 何大伟; 王永生; 胡音; 付晨; 赵宣; 张璐; 李雪

doi:10.3788/fgxb20194010.1207

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溶剂热法制备的二硫化钼量子点在多巴胺荧光检测中的应用

材料合成及性能 | 更新时间：2020-08-12

- 溶剂热法制备的二硫化钼量子点在多巴胺荧光检测中的应用
- Facile Solvothermal Fabrication of MoS₂ Quantum Dots for Highly Fluorescence Detection of Dopamine
- 发光学报 2019年40卷第10期页码：1207-1214
- 作者机构：
  
  北京交通大学理学院北京,100044
- 作者简介：
- 基金信息：
  
  国家重点基础研究发展计划（2016YFA0202302）;国家自然科学基金（61527817，61875236，61905010，61975007）资助项目
- DOI：10.3788/fgxb20194010.1207
  中图分类号： O482.31
- 收稿日期：2019-04-06，
  
  修回日期：2019-05-02，
  
  网络出版日期：2019-05-05，
  
  纸质出版日期：2019-10-05
- 稿件说明：
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吴静燕, 何大伟, 王永生等. 溶剂热法制备的二硫化钼量子点在多巴胺荧光检测中的应用[J]. 发光学报, 2019,40(10): 1207-1214

WU Jing-yan, HE Da-wei, WANG Yong-sheng etc. Facile Solvothermal Fabrication of MoS<sub>2</sub> Quantum Dots for Highly Fluorescence Detection of Dopamine[J]. Chinese Journal of Luminescence, 2019,40(10): 1207-1214
吴静燕, 何大伟, 王永生等. 溶剂热法制备的二硫化钼量子点在多巴胺荧光检测中的应用[J]. 发光学报, 2019,40(10): 1207-1214 DOI： 10.3788/fgxb20194010.1207.

WU Jing-yan, HE Da-wei, WANG Yong-sheng etc. Facile Solvothermal Fabrication of MoS<sub>2</sub> Quantum Dots for Highly Fluorescence Detection of Dopamine[J]. Chinese Journal of Luminescence, 2019,40(10): 1207-1214 DOI： 10.3788/fgxb20194010.1207.

摘要

二硫化钼量子点作为过渡金属硫化物的典型代表，因其独特的光学性质和巨大的应用潜力而备受关注。本文以二硫化钼粉末状晶体为原料，采用溶剂热方法处理得到二硫化钼量子点。在一定的激发条件下，二硫化钼量子点具有很强的荧光特性，可以将其作为荧光探针去检测多巴胺。结果表明，制备的二硫化钼量子点平均尺寸大小约为3 nm，具有很强的荧光特性，荧光量子效率高达57.55%。当多巴胺浓度从0.02 mol/L变为1 000 mol/L时，二硫化钼量子点传感系统会呈现出线性相关的荧光猝灭，且检测限为0.32 mol/L，灵敏度极高。在不同pH值环境和干扰物存在下，二硫化钼量子点传感系统检测多巴胺具有强稳定性和高选择性。二硫化钼量子点因纯度高、尺寸小、荧光强度高等特性在催化、光学成像、显示器件和荧光传感等方面具有潜在的应用前景。

Abstract

Molybdenum disulfide quantum dots (MoS

QDs)

as a typical representative of transition metal dichalcogenides(TMDs)

had attracted much attention due to the unique optical properties and huge potential applications. In this paper

MoS

QDs were fabricated through a facile solvothermal method from MoS

powder crystals. Under certain excitation conditions

MoS

QDs had strong fluorescence properties and were used as fluorescence probes to detect dopamine (DA). The results showed that the average size of the as-prepared MoS

QDs was about 3 nm

and the fluorescence quantum efficiency was as high as 57.55%. When the concentration of DA changed from 0.02 to 1 000 mol/L

the fluorescence of the sensing system was quenched with a linear dependence and the limit of detection was 0.32 mol/L

with extremely high sensitivity. MoS

QDs sensing system has strong stability and high selectivity for dopamine detection in different pH values and the presence of interferences. MoS

QDs had potential applications in catalytic reactions

optical imaging

display devices and fluorescence sensing due to the high purity

small size and high fluorescence intensity.

关键词

Keywords

references

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