Dynamic solvation in phosphonium ionic liquids:: Comparison of bulk and micellar systems and considerations for the construction of the solvation correlation function, C(t)

被引：48

作者：

Mukherjee, Prasun ^{[1
]}

Crank, Jeffrey A. ^{[2
]}

Sharma, Pritesh S. ^{[2
]}

Wijeratne, Artma B. ^{[2
]}

Adhikary, Ramkrishna ^{[1
]}

Bose, Sayantan ^{[1
]}

Armstrong, Daniel W. ^{[2
]}

Petrich, Jacob W. ^{[1
]}

机构：

[1] Iowa State Univ, Dept Chem, Ames, IA 50011 USA

[2] Univ Texas Arlington, Dept Chem & Biochem, Arlington, TX 76019 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2008年 / 112卷 / 11期

关键词：

D O I：

10.1021/jp7107126

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dynamic solvation of the dye coumarin 153 is studied in a phosphonium ionic liquid: hexadecyltributylphosphonium bromide, [(C-4)(3)C16P+][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.

引用

页码：3390 / 3396

页数：7

共 70 条

[1]

Adhikari A, 2007, J PHYS CHEM B, V111, P12809, DOI [10.1021/jp075693l, 10.1021/jp0756931]

[2] Ionic liquids in analytical chemistry [J].