An Intrinsically Conductive Cross-Conjugated Polymer with a Quinhydrone-Like Donor-Acceptor Charge-Transfer Network.

ABSTRACT: Intrinsically conductive polymers free of unstable mobile dopants are highly sought after for stable and reliable electronic performance, yet remain scarce due to synthetic challenges. Here we report poly(3,4-dihydroxythiophene-alt-thiophene-3,4-dione) (HOT-DOT), a novel cross-conjugated polymer and the first polymeric analogue of a quinhydrone-like charge-transfer complex with intrinsic conductivity. HOT-DOT is synthesized through a straightforward three-step route, in which the final air oxidation step spontaneously generates a perfectly balanced 1:1 donor-acceptor architecture that promotes self-doping and stabilizes polarons. The polymer exhibits a narrow bandgap (1.38 eV), broad near-infrared absorption, and high conductivity (∼0.29 S cm^-1), enabled by an ultrasmall π-π sta

SUBMITTER: Zhao N 

PROVIDER: S-EPMC12723467 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature