TY - JOUR
T1 - The probe dependence of solvation dynamics and rotation in the ionic liquid 1-butyl-3-methyl-imidazolium hexafluorophosphate
AU - Ito, N.
AU - Arzhantsev, S.
AU - Maroncelli, M.
N1 - Funding Information:
The authors thank Klaas Zachariasse and Gil Jones for providing some of the solutes, and the Office of Basic Energy Sciences of the US Department of Energy for funding this work.
PY - 2004/9/21
Y1 - 2004/9/21
N2 - Solvation and rotational dynamics were measured using several solvatochromic probes in 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim +][PF 6 -]) to determine the sensitivity of these dynamics to the choice of probe. In all solutes an unresolved ultrafast component (<5 ps) and highly non-exponential solvation dynamics were observed, consistent with results of prior studies in imidazolium ionic liquids. Solvation times varied by a factor of ∼2 among the probes studied. Rotational correlation functions were generally non-exponential, but in all cases rotation times track solvent viscosity in the same manner as in conventional solvents.
AB - Solvation and rotational dynamics were measured using several solvatochromic probes in 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim +][PF 6 -]) to determine the sensitivity of these dynamics to the choice of probe. In all solutes an unresolved ultrafast component (<5 ps) and highly non-exponential solvation dynamics were observed, consistent with results of prior studies in imidazolium ionic liquids. Solvation times varied by a factor of ∼2 among the probes studied. Rotational correlation functions were generally non-exponential, but in all cases rotation times track solvent viscosity in the same manner as in conventional solvents.
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U2 - 10.1016/j.cplett.2004.08.018
DO - 10.1016/j.cplett.2004.08.018
M3 - Article
AN - SCOPUS:7944239252
SN - 0009-2614
VL - 396
SP - 83
EP - 91
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -