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

共 29 条

[21] Fluorescence studies in a pyrrolidinium ionic liquid: Polarity of the medium and solvation dynamics [J].

Mandal, PK ;

Samanta, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (31) :15172-15177

[22] Computational study of imidazolium-based ionic solvents with alkyl substituents of different lengths [J].

Margulis, CJ .

MOLECULAR PHYSICS, 2004, 102 (9-10) :829-838

[23] Computer simulation of a "green chemistry" room-temperature ionic solvent [J].

Margulis, CJ ;

Stern, HA ;

Berne, BJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (46) :12017-12021

[24]

ROGERS RD, 2005, IONIC LIQUIDS 3A B, V901

[25] Solvation dynamics of Nile Red in a room temperature ionic liquid using streak camera [J].

Saha, S ;

Mandal, PK ;

Samanta, A .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2004, 6 (12) :3106-3110

[26] Solvation in molecular ionic liquids [J].

Shim, Y ;

Duan, JS ;

Choi, MY ;

Kim, HJ .

JOURNAL OF CHEMICAL PHYSICS, 2003, 119 (13) :6411-6414

[27]

SHIM Y, 2004, J CHEM PHYS, V122

[28]

Wasserscheid P., 2003, Ionic Liquids in synthesis

[29] Effects of functional group substitution on electron spectra and solvation dynamics in a family of ionic liquids [J].

Wishart, JF ;

Lall-Ramnarine, SI ;

Raju, R ;

Scumpia, A ;

Bellevue, S ;

Ragbir, R ;

Engel, R .

RADIATION PHYSICS AND CHEMISTRY, 2005, 72 (2-3) :99-104

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