Dual-Function FeCl₃ for Copolymerization and Doping in Organic Thermoelectrics
발표자
표승옥 (한양대학교)
연구책임자
정인환 (한양대학교)
공동저자
표승옥 (한양대학교), 오승언 (한양대학교), 정인환 (한양대학교)
초록
내용
FeCl3 is a well-known strong oxidizing agent for polymerization catalyst and p-type dopant. Despite many studies on each role separately, there is a few studies on the simultaneous use of both functions in a single-reagent process for polymerization and doping. In this study, we synthesized organic conjugated polymers by copolymerizing 4H-cyclopenta[2,1-b:3,4-b']dithiophene(CPDT) and 3,4-ethylenedioxythiophene(EDOT) for organic thermoelectrics via a simple FeCl3 oxidative coupling reaction at room temperature. The synthesized copolymers were named PCPDT, PCE10, PCE20, and PCE40, corresponding to EDOT ratios of 0%, 10%, 20%, and 40% in the polymer. At the optimal EDOT ratio of 20%, a more than 10-fold enhancement in PFs was achieved reaching up to 0.182 ± 0.021 μW m−1 K−2.