Solvent controlled intramolecular electron transfer in mixtures of 1-butyl-3-methylimidizolium tetrafluoroborate and acetonitrile

Christopher A. Rumble, Mark Maroncelli

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9 Scopus citations

Abstract

Time-resolved emission techniques were used to study the excited-state intramolecular electron transfer of 9-(4-biphenyl)-10-methylacridinium (BPAc+) in mixtures of 1-butyl-3-methylimidizolium tetrafluoroborate ([Im41][BF4])+ acetonitrile (ACN), a mixture previously shown to be of nearly constant polarity and nearly ideal mixing behavior. Reaction times (τrxn) track solvation times (τsolv) as a function of mixture composition over a range of more than 3 orders of magnitude in τsolv. This same correlation extends to a variety of neat dipolar solvents and ionic liquids. Reaction times are ∼2-fold larger than τsolv over most of the range studied but appear to reach a limiting value of ∼3 ps in the fastest solvents.

Original languageEnglish (US)
Article number193801
JournalJournal of Chemical Physics
Volume148
Issue number19
DOIs
StatePublished - May 21 2018

All Science Journal Classification (ASJC) codes

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

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