Excited state features and dynamics in a distyrylbenzene-based mixed stack donor-acceptor cocrystal with luminescent charge transfer characteristics

M. Wykes, S.K. Park, S. Bhattacharyya, Shinto Varghese, J.E. Kwon, D.R. Whang, I. Cho, R. Wannemacher, L. Lüer, S.Y. Park, J. Gierschner

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

Combined structural, photophysical, and quantum-chemical studies at the quantum mechanics/molecular mechanics (QM/MM) level precisely reveal the structure-property relationships in a mixed-stack donor-acceptor cocrystal, which displays vibronically structured fluorescence, strongly red-shifted against the spectra of the parent donor and acceptor, with high quantum yield despite the pronounced CT character of the emitting state. The study elucidates the reasons for this unusual combination, quantifies the ordering and nature of the collective excited singlet and triplet state manifold, and details the deactivation pathways of the initially created Franck-Condon state.
Original languageEnglish
Pages (from-to)3682-3687
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume6
Issue number18
Early online date31 Aug 2015
DOIs
Publication statusPublished - 17 Sept 2015

Keywords

  • Organic semiconductors
  • Optoelectronics
  • Luminescent cocrystal
  • Charge transfer
  • Photophysics

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