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Photoinduced electron transfer in an imidazolium ionic liquid and in its binary mixtures with water, methanol, and 2-propanol: Appearance of Marcus-type of inversion
S. Sarkar, S. Mandal, C. Ghatak, V.G. Rao, , N. Sarkar
Published in American Chemical Society
Volume: 116
Issue: 4
Pages: 1335 - 1344
The photoinduced electron transfer (PET) reaction has been investigated in a room temperature imidazolium ionic liquid (RTIL), 1-ethyl-3-methylimidazolium ethyl sulfate ([Emim][EtSO4]) and also in [Emim][EtSO 4]-co-solvents mixtures from N,N-dimethyl aniline (DMA) to different Coumarin dyes using steady state and time-resolved fluorescence quenching measurements. We have used water and methanol and 2-propanol as the cosolvents of RTILs for the PET study. On going from neat ionic liquid to the RTIL-co-solvents mixtures the electron transfer rate has been largely enhanced. In neat RTIL as well as in [Emim][EtSO4]-co-solvents mixtures, a Marcus type of inversion in the PET rate have been observed. © 2011 American Chemical Society.
About the journal
JournalData powered by TypesetJournal of Physical Chemistry B
PublisherData powered by TypesetAmerican Chemical Society