The emerging potential of catalyst-transfer polycondensation (CTP) to synthesize defined π-conjugated polymers is just beginning to be realized. Functional semiconducting polymers such as poly(3-hexylthiophene) can be obtained with control over molecular weight and chain-end functionality by appropriate combination of monomer and catalyst. Palladium catalysts have arisen as a promising alternative to nickel for expansion of Kumada and Negishi CTP. In this presentation, the development of a Stille CTP approach to synthesize poly(3-hexylthiophene) will be discussed. A comparison of Stille and Suzuki-Miyaura methods with various Pd catalysts will also be provided with respect to their “living” chain-growth behavior (molecular weight control, dispersity and well-defined chain-end functionality).

Stille catalyst-transfer polycondensation using palladium catalysts for the synthesis of well-defined conjugated materials

249th National Meeting (2015)

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