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.

Surajit Ghosh

Department of Bioscience & Bioengineering

IIT Jodhpur

S. Sarkar

S. Mandal

C. Ghatak

V.G. Rao

N. Sarkar

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Journal of Physical Chemistry B

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

Journal	Data powered by TypesetJournal of Physical Chemistry B
Publisher	Data powered by TypesetAmerican Chemical Society
ISSN	15206106