Wenhuan Wang

Symmetry-Selective Franck–Condon and Herzberg–Teller Coupling Enables Ultra-Narrow Blue Phosphorescence in Pt(II) Complexes

Abstract High color purity remains a critical limitation in deep-blue phosphorescent materials. The origin of ultranarrow emission (10–14 nm) in trans-(NHC)2Pt(C≡C–C≡C–R)2 complexes (Pt-TMS, R = TMS; Pt-Ph, R = Ph) is elucidated through a symmetry-guided vibronic coupling analysi...