Organic electronic devices based on polymeric materials received considerable attention in the last decade, especially for organic solar cells (OSCs) and organic field-effect transistors (OFETs) despite their efficiencies and durability clearly falling short of today’s state-of-the-art inorganic counterparts. The major potential advantages of polymeric materials compared with the inorganic counterparts lie with the versatility in the manufacture, light weight, lower fabrication cost, ease of integration into devices, and large area coating. Amongst organic materials, conjugated polymers continue to attract much attention for use in OSCs and OFETs. Pyrrolo[3,2-d:4,5-d’]bisthiazole (PBTz)-based copolymers have been effectively applied to OSCs and OFETs. The PBTz-based copolymers showed broad absorption form 500 to 800 nm in the film and have good photochemical and thermal stability. Although copolymers of PBTz with electron rich p-type monomers (thiophene, selenophene etc.) are well developed as donor materials, copolymers of PBTz with electron deficient n-type monomers as acceptor materials are less developed. Therefore, the design and synthesis of copolymers of PBTz with electron deficient monomers is essential for the development of next generation organic electronic device. In this contribution, we report the synthesis, characterization and optoelectronic properties of copolymers of fused PBTz. These n-type copolymers can be used as acceptor materials in OSCs and OFETs.

Fused pyrrolo[3,2-d:4,5-d’]bisthiazole-based n-type copolymers

251st National Meeting (2016)

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