Molecularly imprinted conducting polymer based electrochemical sensor for detection of atrazine

被引:161
作者
Pardieu, Elodie [1 ]
Cheap, Helene [1 ]
Vedrine, Christophe [1 ]
Lazerges, Mathieu [1 ]
Lattach, Youssef [1 ]
Garnier, Francis [1 ]
Ramita, Samy [1 ,2 ]
Pernelle, Christine [1 ]
机构
[1] Conservatoire Natl Arts & Metiers, Chaire Genie Analyt, EA 4131, F-75141 Paris 03, France
[2] Univ Paris 06, CNRS, INSP, Inst Nanosci Paris,UMR 7588, F-75015 Paris, France
关键词
Electrochemical sensors; Molecularly imprinted polymers; Conducting polymers; Atrazine; POLYPYRROLE; ELECTRODE; POLY(3,4-ETHYLENEDIOXYTHIOPHENE); RECEPTOR; ACID; 3,4-ETHYLENEDIOXYTHIOPHENE; ELECTROPOLYMERIZATION; RECOGNITION; BIOSENSORS; HERBICIDES;
D O I
10.1016/j.aca.2009.07.029
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
An original electrochemical sensor based on molecularly imprinted conducting polymer (MICP) is developed, which enables the recognition of a small pesticide target molecule, atrazine. The conjugated MICP, poly(3,4-ethylenedioxythiophene-co-thiophene-acetic acid), has been electrochemically synthesized onto a platinum electrode following two steps: (i) polymerization of comonomers in the presence of atrazine, already associated to the acetic acid substituent through hydrogen bonding, and (ii) removal of atrazine from the resulting polymer, which leaves the acetic acid substituents open for association with atrazine. The obtained sensing MICP is highly specific towards newly added atrazine and the recognition can be quantitatively analyzed by the variation of the cyclic voltammogram of MICP. The developed sensor shows remarkable properties: selectivity towards triazinic family, large range of detection (10(-9) mol L-1 to 1.5 x 10(-2) mol L-1 in atrazine) and low detection threshold (10(-7) mol L-1). (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:236 / 245
页数:10
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