Developing Red and Near-Infrared Delayed Fluorescence Emission in Nitrogen-Substituted Donor-Acceptor Polycyclic Hydrocarbon OLED Emitters: A Theoretical Study.

ABSTRACT: Nitrogen substitutions have shown a great impact for the development of thermally activated delayed fluorescence (TADF)-based organic light-emitting diode (OLED) materials. In particular, much focus has been devoted to nitrogen-substituted polycyclic aromatic hydrocarbons (PAHs) for TADF emitters. In this context, we provide here a molecular design approach for symmetric nitrogen substitutions in fused benzene ring PAHs based on the dibenzo[a,c]picene (DBP) molecule. We designed possible donor-acceptor (D-A) compounds with dimethylcarbazole (DMCz) and dimethyldiphenylamine (DMDPA) donors and studied the structure and photophysics of the designed D-A compounds. The twisted and extended D-A-type PAH emitters demonstrate red and near-infrared (NIR) TADF emission. Nitrogen substi

SUBMITTER: Sahoo SR 

PROVIDER: S-EPMC11912487 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature