TY - JOUR
T1 - Excited state intramolecular proton transfer dynamics of semi-rigid polyquinoline in solution and polymer film
AU - Kim, Chul Hoon
AU - Chang, Dong Wook
AU - Kim, Sehoon
AU - Park, Soo Young
AU - Joo, Taiha
PY - 2008/1/4
Y1 - 2008/1/4
N2 - 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.
AB - 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.
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U2 - 10.1016/j.cplett.2007.11.047
DO - 10.1016/j.cplett.2007.11.047
M3 - Article
AN - SCOPUS:37449024308
VL - 450
SP - 302
EP - 307
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -