2 research outputs found
Charge Transfer Emission of T‑Shaped π‑Conjugated Molecules: Impact of Quinoid Character on the Excited State Properties
We investigate the impact of quinoid
character of a π-conjugation
system on the emission properties of T-shaped cross-conjugated molecules.
Three π-conjugated systems with different quinoid nature including
benzothiophene, 2-phenylthiophene, and 2-phenylthienoÂ[3,2-<i>b</i>]Âthiophene were connected orthogonally to a Ď€-conjugated
bisÂ(phenylethynyl)Âarylene with an acid responsive <i>N</i>-methylbenzimidazole junction. The enhancement of quinoid character
of a vertical π-system effectively suppressed the twisted intramolecular
charge transfer (TICT) emission, leading to a more planar ICT state
with enhanced emission intensity as well as a shortened Stokes shift