Please use this identifier to cite or link to this item:
|Title:||Shielding of ionic interactions by sulfur dioxide in an ionic liquid|
|Authors:||Siqueira, Leonardo J. A.|
Ando, Romulo A.
Bazito, Fernanda F. C. [UNIFESP]
Torresi, Roberto M.
Santos, Paulo S.
Ribeiro, Mauro C. C.
Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
|Publisher:||Amer Chemical Soc|
|Citation:||Journal of Physical Chemistry B. Washington: Amer Chemical Soc, v. 112, n. 20, p. 6430-6435, 2008.|
|Abstract:||The effect of adding SO(2) on the structure and dynamics of 1-butyl-3-methylimidazolium bromide (BMIBr) was investigated by low-frequency Raman spectroscopy and molecular dynamics (MD) simulations. the MD simulations indicate that the long-range structure of neat BMIBr is disrupted resulting in a liquid with relatively low viscosity and high conductivity, but strong correlation of ionic motion persists in the BMIBr-SO(2) mixture due to ionic pairing. Raman spectra within the 5 < omega < 200 cm(-1) range at low temperature reveal the short-time dynamics, which is consistent with the vibrational density of states calculated by MD simulations. Several time correlation functions calculated by MD simulations give further insights on the structural relaxation of BMIBr-SO(2).|
|Appears in Collections:||Em verificação - Geral|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.