A colorimetric sensor of cysteine based on self-assembly nanostructures of Fe3+-H2O2/Tetramethylbenzidine system with "On-Off" switching function

被引：8
作者：
Xue, Zhonghua [1 ]
Wang, Xiaofen [1 ]
Rao, Honghong [2 ]
Liu, Xiuhui [1 ]
Lu, Xiaoquan [1 ]
机构：
[1] Northwest Normal Univ, Key Lab Bioelectrochem & Environm Anal Gansu Prov, Coll Chem & Chem Engn, 967 Anning East Rd, Lanzhou 730070, Gansu, Peoples R China
[2] Lanzhou City Univ, Coll Chem & Chem Engn, Lanzhou 730070, Gansu, Peoples R China
来源：
ANALYTICAL BIOCHEMISTRY | 2017年 / 534卷
基金：
中国国家自然科学基金;
关键词：
Colorimetric sensor; cysteine; Tetramethylbenzidine; Self-assembly nanostructures; Dual-level logic gate; LOGIC GATE OPERATION; SELECTIVE DETECTION; AMPEROMETRIC DETECTION; FLUORESCENCE DETECTION; SILVER NANOPARTICLES; GOLD NANOPARTICLES; SENSING PLATFORM; QUANTUM DOTS; MERCURY IONS; AMINO-ACIDS;
D O I：
10.1016/j.ab.2017.07.003
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
Many strategies have been explored for selectively and sensitively detecting cysteine in different samples. Here, a novel colorimetric sensor based on self-assembly nanostructures of Fe3+-H2O2/Tetramethylbenzidine system with dual-level logic gate function and colorimetric determination of cysteine were firstly explored. The proposed Fe3+-H2O2-TMB system provides a sensitive optical signal due to the selectively reductive ability of cysteine to the oxidized TMB and thus could be successfully applied to the construction of instant on-site visual detection method with a paper based test strip for cysteine determination in a sample solution as well as for a dual-level logic gate fabrication. (C) 2017 Elsevier Inc. All rights reserved.
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页码：1 / 9
页数：9
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