Behavior of the heterogeneous electron-transfer rate constants of arenes and substituted anthracenes in room-temperature ionic liquids
Journal
Journal of Physical Chemistry C
Journal Volume
112
Journal Issue
5
Start Page
1650
End Page
1657
ISSN
19327455
Date Issued
2008
Author(s)
Abstract
We report the anodic oxidation of several arenes and anthracenes within room-temperature ionic liquids (RTILs). In particular, the heterogeneous electron-transfer rates (k0) for substituted anthracenes and arenes are also investigated in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C2mim][NTf2]) and found not to obey the outer-sphere Marcus-type behavior of these compounds in contrast to the behavior in traditional organic solvents, in particular the predictions for k0 with molecular size and solvent static dielectric constant. To obtain the electron-transfer rate for 9-phenylanthracene, the dimerization and heterogeneous electron-transfer kinetics of its electrogenerated radical cations is studied in [C2mim] [NTf 2] and eight other RTILs and are both found to be largely independent of the solution viscosity. © 2008 American Chemical Society.
SDGs
Type
journal article