氧化锡量子点的合成及对抗坏血酸的灵敏传感研究

曾慧慧; 肖梅珍; 晏根平; 刘芳; 黄检; 陈林; 施卫国

doi:10.3788/fgxb20194012.1554

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氧化锡量子点的合成及对抗坏血酸的灵敏传感研究

发光学应用及交叉前沿 | 更新时间：2020-08-12

- 氧化锡量子点的合成及对抗坏血酸的灵敏传感研究
- Synthesis of Tin Oxide Quantum Dots-based Fluorescence Probe for AA Sensitive Detection
- 发光学报 2019年40卷第12期页码：1554-1562
- 作者机构：
  
  1. 萍乡学院江西省工业陶瓷重点实验室, 江西萍乡 337055
  2. 萍乡学院材料与化学工程学院, 江西萍乡 337055
- 作者简介：
- 基金信息：
  
  江西省教育厅科学技术研究项目（GJJ17132）();国家自然科学基金（21565019，21705083）资助项目()
- DOI：10.3788/fgxb20194012.1554
  中图分类号： O657.39
- 收稿日期：2019-07-09，
  
  修回日期：2019-08-19，
  
  网络出版日期：2019-12-05，
  
  纸质出版日期：2019-12-05
- 稿件说明：
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曾慧慧, 肖梅珍, 晏根平等. 氧化锡量子点的合成及对抗坏血酸的灵敏传感研究[J]. 发光学报, 2019,40(12): 1554-1562

ZENG Hui-hui, XIAO Mei-zhen, YAN Gen-ping etc. Synthesis of Tin Oxide Quantum Dots-based Fluorescence Probe for AA Sensitive Detection[J]. Chinese Journal of Luminescence, 2019,40(12): 1554-1562
曾慧慧, 肖梅珍, 晏根平等. 氧化锡量子点的合成及对抗坏血酸的灵敏传感研究[J]. 发光学报, 2019,40(12): 1554-1562 DOI： 10.3788/fgxb20194012.1554.

ZENG Hui-hui, XIAO Mei-zhen, YAN Gen-ping etc. Synthesis of Tin Oxide Quantum Dots-based Fluorescence Probe for AA Sensitive Detection[J]. Chinese Journal of Luminescence, 2019,40(12): 1554-1562 DOI： 10.3788/fgxb20194012.1554.

摘要

采用水热法合成了一种SnO

量子点，对其合成条件（如pH、温度、时间等）进行了优化，并使用红外光谱、X粉末衍射、粒度分析仪、荧光光谱仪等手段对量子点的物化和光学性能进行了表征。实验结果显示，合成的SnO

量子点分散均匀、粒径为5 nm左右；在310 nm波长光激发下，其最强发射峰位于415 nm，且表现出良好的光学稳定性。在Fe

存在时，SnO

量子点的荧光被猝灭，而Fe

对SnO

量子点的荧光没有影响，利用抗坏血酸（AA）的还原性，将Fe

还原成Fe

，猝灭的SnO

量子点荧光恢复，当AA浓度为500 molL

-1

时，SnO

荧光恢复率达到95.88%，其他氨基酸基本没有响应。基于此，构建了一种"off-on"荧光探针用于抗坏血酸灵敏检测。

Abstract

Using the stannous chloride as raw materials

we synthesized a SnO

quantum dots by the means of hydrothermal method in this paper. The synthesis conditions such as pH

temperature

as well as time were optimized

and the FT-IR

XRD

Malvern Zetasizer Nano ZS90

FL-4600 fluorescence spectrophotometer

etc

. were utilized for the physicochemical and optical properties characterization of SnO

quantum dots. The experimental result shows that the size of SnO

quantum dots is about 5 nm

when excited with 310 nm light

the maximum emission peak of SnO

quantum dots locats at 415 nm. In the presence of Fe

the fluorescence of SnO

quantum dots is quenched

while the Fe

has no affection on the fluorescence of SnO

. Utilizing the reduction of ascorbic acid (AA)

the Fe

ions can be reduced to Fe

resulting in the fluorescence restore efficiently. When the concentration of AA is 500 molL

-1

the fluorescence recovery can reach to 95.88%. Based on this

we constructed a novel off-on fluorescence probe based on SnO

quantum dots for the sensitive detection of AA.

关键词

Keywords

references

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