High performance unipolar n-type semiconductors are highly desired for the advancement in the field of organic electronics. Careful design and feasible synthesis of new electron deficient monomers embedded with good solubilizing groups, displaying favorable geometry are critical for achieving optimized electrical properties. Principally copolymerization of highly electron deficient monomers should result in n-type polymers. Thiazole flanked Naphthalenediimide (NDI-Tz), Perylenediimide (PDI-Tz) and fused coronene (CDI-Tz) were successfully synthesized and copolymerized with fluorinated and non-fluorinated benzothiadiazole (BT) core to obtain pure n-type copolymers. Computational studies revealed thiazole incorporation increases electron-deficiency in electron deficient rylene imides. Our results demonstrate that copolymer with all acceptor monomers results in unipolar electron transport.

Thiazole-based conjugated ryleneimides co-polymers as unipolar semiconductors

2019 Fall National Meeting

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