Modulating resonance structures toward highly efficient violet-blue organic light-emitting diodes with narrow emission.

ABSTRACT: The spectral narrowing of organic fluorescence materials is a focus issue in the field of photochemistry and organic light-emitting diodes (OLEDs). Donor-acceptor emitters are usually susceptible to environmental interference, exhibiting significant spectral broadening. However, as the energy of the donor and acceptor is matched, a resonant energy form is formed in the molecule, resulting in a narrower and stronger spectrum. The resonance structures of such emitters can be evaluated by the resonance parameter c ². When the neutral state and zwitterionic state of dye molecules are in equilibrium, c ² = 0.5, and this state is called the cyanine limit state. Here, we introduce DOBNA-carbazole-based donor-acceptor emitters BO-2Cz and TB-tCz. The c

SUBMITTER: Wang X 

PROVIDER: S-EPMC12716147 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature