Electrochemical chiral recognition of tryptophan using a glassy carbon electrode modified with β-cyclodextrin and graphene

被引：3
|
作者：
Wanlian Feng
Chao Liu
Shaoyou Lu
Chuyi Zhang
Xiaohua Zhu
Yong Liang
Junmin Nan
机构：
[1] South China Normal University,School of Chemistry and Environment
[2] Shenzhen Center for Disease Control and Prevention,undefined
来源：
Microchimica Acta | 2014年 / 181卷
关键词：
Graphene; Cyclodextrin; Chiral recognition; Ligand exchange; Tryptophan enantiomers;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We report on a method for electrochemical enantioselective recognition of tryptophan (Trp) enantiomers. It is based on competitive host-guest interaction between a deoxy-(2-aminoethylamino)-β-cyclodextrin (CD) bound to graphene nanosheets and the Cu(II) complexes of the Trp enantiomers via a ligand exchange mechanism. Chiral recognition was investigated via cyclic voltammetry and electrochemical impedance spectroscopy. The results reveal that the CD bound to graphene displays a stronger interaction with the Cu(II) complex of L-Trp than to that of D-Trp. The method was applied to the determination of the ratio of Trp enantiomers in mixtures.
引用
收藏
页码：501 / 509
页数：8
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