基于络合反应纳米自聚集的荧光/表面增强拉曼光谱双传感模式检测锌离子

引用本文: 郑思倾, 李丹, 邓维, 司文帅, 白冰. 基于络合反应纳米自聚集的荧光/表面增强拉曼光谱双传感模式检测锌离子[J]. 分析化学, 2020, 48(12): 1687-1693. doi: 10.19756/j.issn.0253-3820.201306 shu

Citation: ZHENG Si-Qing, LI Dan, DENG Wei, SI Wen-Shuai, BAI Bing. Fluorescence and Surface Enhanced Raman Scattering Dual Modal Detection of Zn²⁺ Based on Complexation Reaction-Induced Self-Aggregation of Nanoparticles[J]. Chinese Journal of Analytical Chemistry, 2020, 48(12): 1687-1693. doi: 10.19756/j.issn.0253-3820.201306 shu

基于络合反应纳米自聚集的荧光/表面增强拉曼光谱双传感模式检测锌离子

郑思倾 ^1, ,
李丹 ^{1,
,} ,
邓维 ^1, ,
司文帅 ^2, ,
白冰 ^2,

1.
上海应用技术大学化学与环境工程学院, 上海 201418;
2.
上海市农业科学院农产品质量标准与检测技术研究所, 上海 201403

通讯作者: 李丹, dany@sit.edu.cn

基金项目:
本文系国家自然科学基金项目（Nos.21507089，21976123）和上海市科学技术委员会农业领域项目（No.19391901800）资助

摘要: 纳米光学探针具有独特的结构特征和光学特性，受到广泛的关注。本研究合成了一种新的荧光/表面增强拉曼散射（SERS）双模式纳米光学探针，利用羟基苯甲酸衍生物（NAMH）的酚羟基和席夫碱对Zn²⁺具有优良亲和力的特性，构建了NAMH修饰银纳米颗粒（AgNPs@NAMH）探针，AgNPs@NAMH与Zn²⁺之间发生特异的络合作用，诱导荧光信号猝灭，可用于复杂样本中Zn²⁺的荧光检测，检出限为0.32 nmol/L。此外，络合反应引发AgNPs发生自聚集，可实现对Zn²⁺的超灵敏SERS检测，检出限为0.68 pmol/L。本方法具有操作简单、快速、高灵敏和高选择性等优点，为环境污染物的即时检测提供了技术支持。

关键词:

English

Fluorescence and Surface Enhanced Raman Scattering Dual Modal Detection of Zn²⁺ Based on Complexation Reaction-Induced Self-Aggregation of Nanoparticles

ZHENG Si-Qing ^1, ,
LI Dan ^{1,
,} ,
DENG Wei ^1, ,
SI Wen-Shuai ^2, ,
BAI Bing ^2,

1.
School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
2.
Institute for Agro-Food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China

Corresponding author: LI Dan, dany@sit.edu.cn

Received Date: 25 May 2020
Revised Date: 13 August 2020
Fund Project:
This work was supported by the National Natural Science Foundation of China (Nos. 21507089, 21976123) and the Science and Technology Commission of Shanghai Municipality (No. 19391901800).

Abstract: Optical nanoprobes have attracted extensive attention in area of analytical chemistry because of their unique structural characteristics and optical properties. In this study, a novel fluorescence/surface-enhanced Raman scattering (SERS) dual-modal nanoprobe was developed. The phenolic hydroxyl group and Schiff base of hydroxybenzoic acid derivative (NAMH) exhibited a preferential affinity towards Zn²⁺. The complexation between AgNPs@NAMH and Zn²⁺ induced the quenching of the fluorescent signal of NAMH, thus enabling the fluorescent detection of Zn²⁺ in complex samples with a detection limit of 0.32 nmol/L. Moreover, the Zn²⁺-triggered AgNPs aggregation led to the formation of abundant "hot spots" among NPs, which could be used for SERS analysis of Zn²⁺ with a detection limit of 0.68 pmol/L. This method had a number of advantages over conventional approaches in simplicity of operation, rapidity, high sensitivity and high selectivity, and provided new technical support for the immediate detection of environmental pollutants.

Key words:

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基于络合反应纳米自聚集的荧光/表面增强拉曼光谱双传感模式检测锌离子

通讯作者: 李丹, dany@sit.edu.cn

English

Fluorescence and Surface Enhanced Raman Scattering Dual Modal Detection of Zn²⁺ Based on Complexation Reaction-Induced Self-Aggregation of Nanoparticles

Corresponding author: LI Dan, dany@sit.edu.cn

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

基于络合反应纳米自聚集的荧光/表面增强拉曼光谱双传感模式检测锌离子

通讯作者: 李丹, dany@sit.edu.cn

English

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Corresponding author: LI Dan, dany@sit.edu.cn

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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