Enantioselective recognition of amino acid by differential pulse voltammetry in molecularly imprinted monolayers assembled on Au electrodes

被引:18
作者
Huan, SY [1 ]
Shen, GL [1 ]
Yu, RQ [1 ]
机构
[1] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Hunan 410082, Peoples R China
关键词
entantioselectivity; differential pulse voltammetry; molecular imprinting; monolayer; L-Serine;
D O I
10.1002/elan.200302879
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
An electrochemical sensor based on L-cysteine SAM imprinted by L-serine has been developed for the detection of L-serine. The sensor shows some entantioselectivity toward L-serine and a stable response establishes within 5 min. The peak current intensity of potassium ferricyanide quantified by differential pulse voltammetry (DPV) decreased linearly with increasing L-serine concentration from 10 to 100 muM with a gradient of 20.91 nA muM(-1). The detection limit was 4.32 muM. The coefficient of enantiometric selectivity of the molecularly imprinted SAM was about 3.0. Compounds with similar structure as serine caused much less response.
引用
收藏
页码:1019 / 1023
页数:5
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