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Synthesis of Electroactive Polythiophene Derivatives and Its Application for Biointerface (I)  

정선형 (성균관대학교 응용화학부 고분자시스템공학전공·고분자기술연구소)
배진영 (성균관대학교 응용화학부 고분자시스템공학전공·고분자기술연구소)
김지흥 (성균관대학교 응용화학부 화학공학전공·고분자기술연구소)
정동준 (서울대학교 지능형 생체계면공학 연구센터)
Publication Information
Polymer(Korea) / v.26, no.1, 2002 , pp. 28-36 More about this Journal
Abstract
In this study, we synthesized novel thiophene derivatives by the protection of the carboxyl group of 3-thiophene acetic acid with differently substituted benzyl groups. While 3-thiophene acetic acid is not electro-polymerizable, the modified monomers can be easily electro-oxidized to form stable electroactive polymers. The protecting groups can be easily removed in the solid state and the desired reactive carboxyl group can be introduced on the polymer surface. SEM observations show that obtained polymer films show a very good film surface and homogeneous morphology on the Pt electrode. After introduction of macromonomer, FT-IR spectrum shows new absorption bands at 1650 and $1550 cm^{-1}$, which is consistent with the formation of an amide bond. Electroactivity measurements were examined by cyclic voltammogram(CV). These polymers showed the characteristic electrochemical behavior of poly(3-alkylthiophene)s with reversible redox transition in the range of 0.7-0.9 V.
Keywords
Electrochemcial polymerization; polythiophene derivatives; electroactivity; polyelectrolyte; biointerface; $\alpha$,$\omega$-bifunctional macromonomer;
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