Constructing Donor-Resonance-Donor Molecules for Acceptor-Free Bipolar Organic Semiconductors.

ABSTRACT: Organic semiconductors with bipolar transporting character are highly attractive as they offer the possibility to achieve high optoelectronic performance in simple device structures. However, the continual efforts in preparing bipolar materials are focusing on donor-acceptor (D-A) architectures by introducing both electron-donating and electron-withdrawing units into one molecule in static molecular design principles. Here, we report a dynamic approach to construct bipolar materials using only electron-donating carbazoles connected by N-P=X resonance linkages in a donor-resonance-donor (D-r-D) structure. By facilitating the stimuli-responsive resonance variation, these D-r-D molecules exhibit extraordinary bipolar properties by positively charging one donor of carbazole in enantiotropic N<

SUBMITTER: Jiang H 

PROVIDER: S-EPMC11014465 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature