Permethylated-β-Cyclodextrin Capped CdTe Quantum Dot and its Sensitive Fluorescence Analysis of Malachite Green

被引：11
作者：
Cao, Yujuan [1 ,2 ]
Wei, Jiongling [1 ]
Wu, Wei [1 ]
Wang, Song [1 ]
Hu, Xiaogang [1 ,2 ]
Yu, Ying [1 ,2 ]
机构：
[1] S China Normal Univ, Sch Chem & Environm, Guangzhou 510006, Guangdong, Peoples R China
[2] S China Normal Univ, Guangzhou Key Lab Analyt Chem Biomed, Guangzhou 510006, Guangdong, Peoples R China
来源：
JOURNAL OF FLUORESCENCE | 2015年 / 25卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Permethylated-beta-cyclodextrin; Quantum dots; Malachite green; Fluorescence analysis; Water and fish samples; SOLID-PHASE EXTRACTION; AMINO-ACIDS; CRYSTAL VIOLET; NANOPARTICLES; COMPLEXATION; RECOGNITION; CELLS;
D O I：
10.1007/s10895-015-1630-1
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
In the present work, the CdTe quantum dots were covalently conjugated with permethylated-beta-cyclodextrin (OMe-beta-CD) using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride as cross-linking reagent. The obtained functional quantum dots (OMe-beta-CD/QDs) showed highly luminescent, water solubility and photostability as well as good inclusion ability to malachite green. A sensitive fluorescence method was developed for the analysis of malachite green in different samples. The good linearity was 2.0 x 10(-7)-1.0 x 10(-5) mol/L and the limit of detect was 1.7 x 10(-8) mol/L. The recoveries for three environmental water samples were 92.0-108.2 % with relative standard deviation (RSD) of 0.24-1.87 %, while the recovery for the fish sample was 94.3 % with RSD of 1.04 %. The results showed that the present method was sensitive and convenient to determine malachite green in complex samples.
引用
收藏
页码：1397 / 1402
页数：6
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