Preparation, characterisation and biosensor application of conducting polymers based on ferrocene substituted thiophene and terthiophene
Preparation, characterisation and biosensor application of conducting polymers based on ferrocene substituted thiophene and terthiophene
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DOI：
10.1016/s0013-4686(02)00136-6
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发表时间：
2002-07-05
影响因子：
6.6
通讯作者：
Wallace, GG
中科院分区：
文献类型：
--
作者：
Chen, J;Burrell, AK;Wallace, GG
新的二茂铁取代的噻吩和三噻吩化合物，反式-1-（3-噻吩基）-2-（二茂铁基）乙烯和反式-1-（（2 ′，2 ″：5 ″，2 ″ ′-三噻吩）-3 ″-基）-2-（二茂铁基）乙烯，已被用于制备均聚物和共聚物材料。用循环伏安法（CV）、紫外-可见光谱、扫描电镜（SEM）和四探针电导法对反式-1-（3 '-噻吩基）-2-（二茂铁基）乙烯与吡咯的共聚物和反式-1-（（2'，2”：5”，2“'-三噻吩基）-3”-基）-2-（二茂铁基）乙烯的均聚物进行了表征。所获得的结果表明，二茂铁部分在电聚合过程中起着催化作用。共聚物和均聚物都显示出具有氧化还原峰的循环伏安图，该氧化还原峰可以归属于二茂铁部分和聚合物主链。反式-1-（3 '-噻吩基）-2-（二茂铁基）乙烯与吡咯的共聚物的紫外-可见光谱和形貌与聚吡咯相似，而反式-1-（（2'，2”：5”，2“'-三噻吩）-3”-基）-2-（二茂铁基）乙烯的均聚物的光谱和形貌与聚三噻吩不同。共聚物的电导率测定为0.13 S cm（-1），而反式-1-（（2，2”：5”，2“'三噻吩）-3”-基）-2-（二茂铁基）乙烯的均聚物的电导率为82.6 μ S cm（-1）。的共聚物或均聚物修饰的Pt盘电极促进访问细胞色素C内的氧化还原中心在CV期间，和它们的潜在用途作为生物传感器已被证明。(C)2002年由Elsevier Science Ltd.出版
Novel ferrocene-substituted thiophene and terthiophene compounds, trans-1-(3-thienyl)-2-(ferrocenyl)ethene and trans-1((2',2":5",2"'-terthiophen)-3"-yl)-2-(ferrocenyl)ethene, have been used to produce homopolymer and copolymer materials. The copolymer of trans -1-(3'-thienyl)-2-(ferrocenyl)ethene with pyrrole and the homopolymer of trans-1-((2',2":5",2"'-terthioplien)-3"-yl)-2-(ferrocenyl)ethene were characterised using cyclic voltammetry (CV), UV-visible spectroscopy, scanning electron microscopy (SEM) and four point probe conductivity measurements. Results obtained suggest that the ferrocene moiety plays a catalytic role in the electropolymerisation process. Both the copolymer and homopolymer displayed cyclic voltammograms with redox peaks that can be assigned to the ferrocene moiety and the polymer backbone. The UV-visible spectra and morphology of the copolymer of trans-1-(3'-thienyl)-2-(ferrocenyl)ethene with pyrrole were similar to those of polypyrrole, but the spectra and morphology of the homopolymer of trans-1-((2',2":5",2"'-terthiophen)-3"-yl)-2-(ferrocenyl)ethene were different from those of polyterthiophene. The conductivity of the copolymer was determined to be 0.13 S cm(-1) whereas that of the homopolymer of trans-1-((2,2":5",2"'terthiophen)-3"-yl)-2-(ferrocenyl)ethene was 82.6 muS cm(-1). The copolymer or homopolymer modified Pt disk electrodes facilitated access to the redox centre within Cytochrome C during CV, and their potential use as biosensors has been demonstrated. (C) 2002 Published by Elsevier Science Ltd.