Campus Units

Chemistry

Document Type

Article

Publication Version

Published Version

Publication Date

2-26-2008

Journal or Book Title

Journal of Physical Chemistry B

Volume

112

Issue

11

First Page

3390

Last Page

3396

DOI

10.1021/jp7107126

Abstract

Dynamic solvation of the dye coumarin 153 is studied in a phosphonium ionic liquid:  hexadecyltributylphosphonium bromide, [(C4)3C16P+][Br-]. It forms micelles in water, and the bulk also exists as a liquid under our experimental conditions. This system permits a comparison with an imidazolium ionic liquid studied earlier, which also formed micelles in water (J. Phys. Chem. A 2006, 110, 10725−10730). We conclude that our analysis of the comparable situation in a phosphonium liquid is not as definitive as we had proposed earlier, i.e., that the majority of the early-time solvation arises from the organic cation. Part of the difficulty in performing this analysis is most likely due to the amount of water that is associated with the micelle. In the course of this work, we have focused on the calculation of the solvation correlation function, C(t), and investigated how it depends upon the methods with which the “zero-time” spectrum is constructed.

Comments

Reprinted (adapted) with permission from Journal of Physical Chemistry B 112 (2008): 3390, doi: 10.1021/jp7107126. Copyright 2008 American Chemical Society.

Copyright Owner

American Chemical Society

Language

en

File Format

application/pdf

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