We report the synthesis, structural, electrochemical, photophysical and field-effect charge transport properties of new diketopyrrolopyrrole (DPP)-based poly(arylene vinylene)s.  The new DPP-based copolymers, poly[3,6-(2,5-bis(2-hexyldecyl)pyrrolo[3,4-c]pyrrole-1,4-dione)-alt-1,2-bis-(2'-thienyl)vinyl-5',5''-diyl] (HD-PPTV), poly[3,6-(2,5-bis(2-hexyldecyl)pyrrolo[3,4-c]pyrrole-1,4-dione)-alt-1,2-bisphenylvinyl-4',4�-diyl] (HD-PPPV), and a 50:50 random copolymer (PPTPV), were synthesized by Stille coupling polymerization. The copolymers have broad optical absorption band with narrow optical energy bandgap that varied from 1.2 eV for HD-PPTV to 2.0 eV for HD-PPPV. The HOMO/ LUMO levels of the new DPP-based copolymers were in the range of -5.14 � -5.48 eV and -3.13 � -3.34 eV, respectively. The  charge transport properties of the copolymers were investigated by fabrication of organic field-effect transistors (OFETs). HD-PPTV and PPTPV showed ambipolar charge transport properties with carrier mobilities of 0.03 - 0.2 cm2/Vs.

New donor-acceptor conjugated copolymers for electronics and optoelectronics

243rd National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.