Excited state intramolecular proton transfer dynamics of semi-rigid polyquinoline in solution and polymer film

Chul Hoon Kim, Dong Wook Chang, Sehoon Kim, Soo Young Park, Taiha Joo

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Dynamics of the excited state intramolecular proton transfer of a polyquinoline in solution and polymer film has been studied by time-resolved fluorescence. The proton transfer occurs rapidly in both solution and polymer film at 130 and 55 fs, respectively. In solution, however, the dynamics is quite dispersive, as the 130 fs component comprises ∼30% of the fluorescence decay and the remainder at slower rates. The dynamics is homogeneous in the polymer film. The dynamics are consistent with the stationary fluorescence spectra reported previously. Conformational heterogeneity in the dihedral angle is invoked to account for the dispersive dynamics.

Original languageEnglish
Pages (from-to)302-307
Number of pages6
JournalChemical Physics Letters
Volume450
Issue number4-6
DOIs
Publication statusPublished - 2008 Jan 4

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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