Observing the complete solvation response of DCS in imidazolium. ionic liquids, from the femtosecond to nanosecond regimes

被引：87

作者：

Arzhantsev, S ^{[1
]}

Jin, H ^{[1
]}

Ito, N ^{[1
]}

Maroncelli, M ^{[1
]}

机构：

[1] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 417卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2005.10.062

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：

Femtosecond Kerr-gated emission spectroscopy and picosecond time-correlated single photon counting are used to measured the full solvation response of 4-dimethylamino-4'-cyanostilbene in three imidazolium ionic liquids. The liquids studied are comprised of the 3-butyl-1-methylimidazolium cation '(Im(41)(+))' and the anions hexafluorophosphate, bis(trifluoromethylsulfonyl)imide ('Tf2N-'), and tris(trifluoromethylsulfonyl)methide ('Tf3C-'). In all three liquids the solvation response is widely distributed in time with important contributions extending from 100 fs to 10 ns. The amplitude of the fastest (< 1 ps) portion of the dynamics is correlated to the relative size and/or mass of the anion and it increases in the order Tf3C- < Tf2N- < PF6-. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：524 / 529

页数：6

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