Observing the complete solvation response of DCS in imidazolium ionic liquids, from the femtosecond to nanosecond regimes

Sergei Arzhantsev, Hui Jin, Naoki Ito, Mark Maroncelli

Research output: Contribution to journalArticlepeer-review

85 Scopus citations

Abstract

Femtosecond Kerr-gated emission spectroscopy and picosecond time-correlated single photon counting are used to measured the full solvation response of 4-dimethylamino-4′-cyanostilbene in three imidazolium ionic liquids. The liquids studied are comprised of the 3-butyl-1-methylimidazolium cation '(Im41+)' and the anions hexafluorophosphate, bis(trifluoromethylsulfonyl)imide ('Tf2N-'), and tris(trifluoromethylsulfonyl)methide ('Tf3C-'). In all three liquids the solvation response is widely distributed in time with important contributions extending from 100 fs to 10 ns. The amplitude of the fastest (<1 ps) portion of the dynamics is correlated to the relative size and/or mass of the anion and it increases in the order Tf3C-<Tf2N-<PF6-.

Original languageEnglish (US)
Pages (from-to)524-529
Number of pages6
JournalChemical Physics Letters
Volume417
Issue number4-6
DOIs
StatePublished - Jan 10 2006

All Science Journal Classification (ASJC) codes

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

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