TY - JOUR
T1 - Solvation dynamics of coumarin 153 in several classes of ionic liquids
T2 - Cation dependence of the ultrafast component
AU - Arzhantsev, S.
AU - Ito, N.
AU - Heitz, M.
AU - Maroncelli, M.
N1 - Funding Information:
The authors gratefully acknowledge Covalent Associates and Cytec Canada Inc. for supplying samples of some of the ionic liquids used here, and the US Department of Energy, Office of Basic Energy Sciences, for the support of this work.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2003/11/14
Y1 - 2003/11/14
N2 - Time-resolved emission spectroscopy with 25 ps resolution is used to measure the dynamics of solvation of coumarin 153 in four ionic liquids (ILs), comprising three (imidazolium, ammonium, and phosphonium) cation classes. All four liquids possess similar electronic and nuclear polarizabilities. Solvation in the imidazolium ILs is biphasic, consisting of ultrafast (<5 ps) and slow (ns) components of roughly equal amplitudes near room temperature, whereas the ammonium and phosphonium ILs lack the ultrafast portion of the response. The slow solvation component displays kinetics typical of glass-forming liquids and tracks solution viscosity in a similar manner in all of the ILs.
AB - Time-resolved emission spectroscopy with 25 ps resolution is used to measure the dynamics of solvation of coumarin 153 in four ionic liquids (ILs), comprising three (imidazolium, ammonium, and phosphonium) cation classes. All four liquids possess similar electronic and nuclear polarizabilities. Solvation in the imidazolium ILs is biphasic, consisting of ultrafast (<5 ps) and slow (ns) components of roughly equal amplitudes near room temperature, whereas the ammonium and phosphonium ILs lack the ultrafast portion of the response. The slow solvation component displays kinetics typical of glass-forming liquids and tracks solution viscosity in a similar manner in all of the ILs.
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U2 - 10.1016/j.cplett.2003.09.131
DO - 10.1016/j.cplett.2003.09.131
M3 - Article
AN - SCOPUS:0242594530
SN - 0009-2614
VL - 381
SP - 278
EP - 286
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3-4
ER -