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

文献类型： 外文期刊

第一作者： Zheng Si-Qing

作者： Zheng Si-Qing;Li Dan;Deng Wei;Si Wen-Shuai;Bai Bing

作者机构：

关键词： Fluorescence; Surface-enhanced Raman scattering; Complexation reaction; Zinc ion

期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.134； 五年影响因子：0.909 ）

ISSN： 0253-3820

年卷期： 2020 年 48 卷 12 期

页码：

收录情况： SCI

摘要： 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/surfaceenhanced 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.

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