Fluorescence sensor based on D-penicillamine capped cadmium sulfide quantum dots for the detection of cysteamine

被引：15
|
作者：
Ngamdee, Kessarin [1 ,2 ]
Kulchat, Sirinan [1 ,2 ]
Tuntulani, Thawatchai [3 ]
Ngeontae, Wittaya [1 ,2 ]
机构：
[1] Khon Kaen Univ, Fac Sci, Dept Chem, Mat Chem Res Ctr, Khon Kaen 40002, Thailand
[2] Khon Kaen Univ, Fac Sci, Ctr Excellence Innovat Chem, Khon Kaen 40002, Thailand
[3] Chulalongkorn Univ, Fac Sci, Dept Chem, Bangkok 10330, Thailand
来源：
JOURNAL OF LUMINESCENCE | 2017年 / 187卷
关键词：
Chemical sensors; Fluorescence sensors; Quantum dots; Optical nanomaterials; Fluorescence enhancement; FLAME PHOTOMETRIC DETECTION; NANOTUBE PASTE ELECTRODE; OPTICAL-ACTIVITY; GAS-CHROMATOGRAPHY; CIRCULAR-DICHROISM; CDTE NANOCRYSTALS; CARBON NANOTUBES; FOLIC-ACID; LABEL-FREE; CYSTEINE;
D O I：
10.1016/j.jlumin.2017.03.016
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A fluorescence sensor for selective detection of cysteamine derived from D-penicillamine capped cadmium sulfide quantum dots (DPA-CdS QDs) is proposed. The DPA-CdS QDs were successfully synthesized via a simple method in a one-pot reaction. The morphology of DPA-CdS QDs was characterized by transmission electron microscopy (TEM) revealing spherical shapes with an average size of 3.2 +/- 0.5 nm. In the presence of cysteamine, the fluorescence intensity of the DPA-CdS QDs was enhanced proportionally with increasing cysteamine concentration. The proposed fluorescence sensor can be used to detect cysteamine in a wide range of working concentrations up to 10 mu M and with a limit of detection of 0.07 mu M. Furthermore, this sensor can be efficiently used for the detection of cysteamine in real urine samples with high accuracy. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：260 / 268
页数：9
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