The probe dependence of solvation dynamics and rotation in the ionic liquid 1-butyl-3-methyl-imidazolium hexafluorophosphate

N. Ito, S. Arzhantsev, M. Maroncelli

Research output: Contribution to journalArticle

192 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)83-91
Number of pages9
JournalChemical Physics Letters
Volume396
Issue number1-3
DOIs
StatePublished - Sep 21 2004

All Science Journal Classification (ASJC) codes

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

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