The synthesis of various pyrrole based small molecules and polymers is reported as semiconducting materials. But the lower stability of pyrrole containing materials has limited their usage in various electronic applications. Therefore, the fused ring systems with pyrrole such as thieno[3,2-<i>b</i>]pyrrole and dithieno[3,2,-b:2’,3’-d]pyrrole are designed and they have shown better stability and are promising building blocks for organic electronic applications. The inherent electron donating nature of these fused ring systems can result in the formation of p-type polymers with various acceptor units like benzothiadiazole (BTD) and diketopyrrolopyrrole (DPP). Herein, different donors based on pyrrole such as furo[3,2-b]pyrrole, thieno[3,2-b]pyrrole, thieno[3,2-b:4,5-b']dipyrrole, furo[3,2-b:4,5-b']dipyrrole are polymerized with BDT, DPP and isoindigo acceptors using stille coupling to generate donor-acceptor polymers to be used in Organic field effect transistors (OFETs). The photo-physical and electrochemical characteristics of these polymers are determined and used in organic electronics.

Pyrrole-based donor-acceptor conjugated molecules for organic electronics

2019 Spring National Meeting

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