Fabrication of amine functionalized CdSe@SiO2 nanoparticles as fluorescence nanosensor for highly selective and sensitive detection of picric acid

被引：13

作者：

Gong, Wen ^{[1
]}

Li, Hang ^{[2
]}

Gong, Xiaoming ^{[2
]}

Zhang, Zaipeng ^{[2
]}

Lu, Zhiyan ^{[2
]}

机构：

[1] Third Peoples Hosp Hubei Prov, Dept Cardiol, Wuhan 430030, Peoples R China

[2] Wuhan Univ, Zhongnan Hosp, Dept Radiol, Wuhan 430071, Hubei, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2020年 / 233卷 / 233期

关键词：

CdSe quantum dots; Nanopartides; PA; Sensors; Core-shell structure; Fluorescence quenching; CDSE QUANTUM DOTS; METAL-ORGANIC FRAMEWORKS; SEMICONDUCTOR NANOCRYSTALS; 2,4,6-TRINITROPHENOL TNP; NITROAROMATIC EXPLOSIVES; AQUEOUS-SOLUTION; SENSORS; PHASE; NANOCLUSTERS; RECOGNITION;

D O I：

10.1016/j.saa.2020.118221

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

In this work, amino functionalized CdSe-silica core-shell nanoparticles (NH2-CdSe@SiO2 NPs) were constructed as probe to detect picric acid (PA). The CdSe QDs were embedded in SiO2 nanopartides and modified with amino groups on the surface. The nitro explosives are electron deficient in nature, which will have stronger affinity for amines and resulted in fluorescence quenching of quantum dots. It was proved that this strategy is selective, easy and sensitive enough for sensing PA with a detection limit of 0.5 x 10(-7) M. (C) 2020 Published by Elsevier B.V.

引用

页数：6

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