壳聚糖衍生物基聚合物碳点对Pd2+的传感性能

于淑娟; 袁广志; 汪丰; 鲁诗言; 李媛媛

doi:10.3788/fgxb20194012.1546

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壳聚糖衍生物基聚合物碳点对Pd²⁺的传感性能

发光学应用及交叉前沿 | 更新时间：2020-08-12

- 壳聚糖衍生物基聚合物碳点对Pd²⁺的传感性能
- Sensing Properties of Chitosan Derivatives-based Polymer Carbon Dots to Pd²⁺
- 发光学报 2019年40卷第12期页码：1546-1553
- 作者机构：
  
  南宁师范大学化学与材料学院, 广西天然高分子化学与物理重点实验室, 广西南宁 530001
- 作者简介：
- 基金信息：
  
  广西自然科学基金（2016GXNSFAA380203）资助项目()
- DOI：10.3788/fgxb20194012.1546
  中图分类号： TB383;O613.71
- 收稿日期：2019-06-14，
  
  修回日期：2019-08-24，
  
  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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于淑娟, 袁广志, 汪丰等. 壳聚糖衍生物基聚合物碳点对Pd2+的传感性能[J]. 发光学报, 2019,40(12): 1546-1553

YU Shu-juan, YUAN Guang-zhi, WANG Feng etc. Sensing Properties of Chitosan Derivatives-based Polymer Carbon Dots to Pd2+[J]. Chinese Journal of Luminescence, 2019,40(12): 1546-1553
于淑娟, 袁广志, 汪丰等. 壳聚糖衍生物基聚合物碳点对Pd2+的传感性能[J]. 发光学报, 2019,40(12): 1546-1553 DOI： 10.3788/fgxb20194012.1546.

YU Shu-juan, YUAN Guang-zhi, WANG Feng etc. Sensing Properties of Chitosan Derivatives-based Polymer Carbon Dots to Pd2+[J]. Chinese Journal of Luminescence, 2019,40(12): 1546-1553 DOI： 10.3788/fgxb20194012.1546.

摘要

以柠檬酸与壳聚糖为主要原料，以1-乙基-（3-二甲基氨基丙基）碳酰二亚胺盐酸盐（EDC）和N-羟基琥珀酰亚胺（NHS）为偶合剂，合成了一种壳聚糖衍生物（CS-g-CA）。然后将CS-g-CA与掺杂试剂N-（2-羟乙基）-乙二胺通过水热法合成了壳聚糖衍生物聚合物碳点（P（CS-g-CA）Ds）。采用荧光光谱、紫外光谱、透射电镜对P（CS-g-CA）Ds进行了表征和性能测试。结果表明该聚合物碳点具有良好的荧光性能，有较高的量子产率（54.7%）和较长的荧光寿命（13.12 ns）。将P（CS-g-CA）Ds应用于金属离子检测中，发现P（CS-g-CA）Ds对Pd

有良好的选择性，其检测极限为63.3 nmol/L。通过紫外吸收光谱、荧光寿命以及不同温度下猝灭常数的测定研究了Pd

对P（CS-g-CA）Ds的荧光猝灭机制，结果均表明其猝灭机制为静态猝灭。

Abstract

In this paper

a chitosan derivative(CS-g-CA) was synthesized by using citric acid and chitosan as main raw materials

N-hydroxysuccinimide(NHS) and N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride(EDC) as coupling agents. Then

the chitosan derivative polymer dot fluorescent material P(CS-g-CA) Ds was synthesized by hydrothermal method using CS-g-CA and the doping reagent N-(2-hydroxyethyl)-ethylenediamine. The P(CS-g-CA)Ds was characterized by fluorescence

ultraviolet spectroscopy(UV)

transmission electron microscopy

photoluminescence spectra.The quantum yield and fluorescence lifetime of the test P(CS-g-CA)Ds were 54.7% and 13.12 ns

respectively

indicating that the polymer carbon dots have good fluorescence properties. When P(CS-g-CA)Ds was applied to metal ion detection

it was found that P(CS-g-CA)Ds had good selectivity to Pd

with a detection limit of 63.3 nmol/L. The fluorescence quenching mechanism of Pd

on P(CS-g-CA)Ds was studied by UV spectroscopy

fluorescence lifetime and quenching constant at different temperatures. The results show that the quenching mechanism is static quenching.

关键词

Keywords

references

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