Dual conformational emission and vibrational coherence in a sulfone-embedded narrowband emitter.

ABSTRACT: Organic luminescent narrowband emitters have emerged as promising candidates for wide-color-gamut displays. However, the comprehensive photo-induced structural and vibrational dynamics responsible for the spectral broadening remain poorly understood. In this study, ultrafast spectroscopy is employed to elucidate the excited state dynamics of a sulfone-embedded narrowband emitter, 2tCPD. An intrinsic dual emission, which originates from a reversible conformational transition between boat and chair structures on a timescale of ∼100 ps, is revealed. In aromatic toluene solution, the metastable chair conformation is stabilized by forming a sandwich-like toluene-2tCPD-toluene complex through weak π-π interaction, thereby switching the dominant emission to the chair form. Furthermore, the direct

SUBMITTER: Jiang S 

PROVIDER: S-EPMC12703754 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature