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Sensitive Hg (II) ion detection by fluorescent multilayer films fabricated with quantum dots 期刊论文

编号：

39036872-e49c-4659-a40a-a84bd4f5fafb
作者：

Wang, Chao#^[1]Zhao, Jianwu(赵建武)^[2]Wang, Yan^[3];Lou, Nan^[2];Ma, Qiang^[1];Su, Xingguang(苏星光)*^[1]
语种：

英文
期刊：

SENSORS AND ACTUATORS B-CHEMICAL ISSN：0925-4005 2009 年 139 卷 2 期 (476 - 482) ; JUN 4
收录：
关键词：

Quantum dots Multilayer films Fluorescence quenching Hg (II) ions
摘要：

Stable, monodisperse CdTe quantum dots (QDs) capped with mercaptosuccinic acid were prepared facilely in aqueous medium, which were deposited on the quartz slides to form multilayer films by electrostatic interactions with poly(dimethyldiallyl ammonium chloride) (PDDA). The PDDA/QDs multilayer films are easily fabricated and show high photostability. The fluorescence of the multilayer films could be quenched effectively by Hg (II) ions without obvious shift in maximum photoluminescence emission wavelength, which can be used for the detection of Hg (II) ions. The electron transfer process between the capping ligands and Hg (II) ions should be mainly responsible for the remarkable quenching effect of Hg (II) ions. Under optimal conditions, the quenched fluorescence intensities of multilayer films are perfectly described by modified Stern-Volmer equation with the concentration of Hg (II) ions ranging from 0.01 mu M to 1 mu M. (C) 2009 Elsevier B.V. All rights reserved.
推荐引用方式
GB/T 7714：

Wang Chao,Zhao Jianwu,Wang Yan, et al. Sensitive Hg (II) ion detection by fluorescent multilayer films fabricated with quantum dots [J].SENSORS AND ACTUATORS B-CHEMICAL,2009,139(2):476-482.
APA：

Wang Chao,Zhao Jianwu,Wang Yan,Lou Nan,&Su Xingguang.(2009).Sensitive Hg (II) ion detection by fluorescent multilayer films fabricated with quantum dots .SENSORS AND ACTUATORS B-CHEMICAL,139(2):476-482.
MLA：

Wang Chao, et al. "Sensitive Hg (II) ion detection by fluorescent multilayer films fabricated with quantum dots" .SENSORS AND ACTUATORS B-CHEMICAL 139,2(2009):476-482.
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