Synthesis of Poly(3-Hexythiophene) & Poly(Dimethylsiloxane) Based Block Copolymers and Its Thermoelectric Properties
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Poly(3-hexylthiophene) (P3HT) is a polymer material used in various fields because it has good physical properties such as high electroconductivity, optical properties, and also it is easy to polymerize and the structure of the monomer is easily changed. However, despite the hexyl group in 3-position, P3HT with high molecular weight has a rigid structure with pi-pi stacking. The low solubility from this structural characteristic, the plasticization after polymerization remaining limitation of related researches. In this study, we reports an attempt to block copolymerize P3HT with Poly(dimethylsiloxane) (PDMS), which was known as very flexible polymer. Di-, and Triblock copolymer was produced via Copper(I)-catalyzed azide-alkyne cycloaddition after polymerization of each block. And we also reported novel approach to synthesize this block copolyer using PDMS-Nickel macroinitiator. The electrical properties of the block copolymers are also reported.