Optical absorption and fluorescence studies on imidazolium ionic liquids comprising the bis(trifluoromethanesulphonyl)imide anion

Paul, Aniruddha ; Samanta, Anunay (2006) Optical absorption and fluorescence studies on imidazolium ionic liquids comprising the bis(trifluoromethanesulphonyl)imide anion Proceedings of the Indian Academy of Sciences - Chemical Sciences, 118 (4). pp. 335-340. ISSN 0253-4134

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Official URL: http://ns1.ias.ac.in/chemsci/Pdf-Jul2006/335.pdf

Related URL: http://dx.doi.org/10.1007/BF02708527

Abstract

Optical absorption and fluorescence behaviour of two rigorously purified imidazolium ionic liquids, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide and 1-ethyl-3-methylimidazoliumbis(trifluoromethanesulfonyl)imide are studied in the neat condition and in solution. Non-negligible absorption in the UV region with a long tail extending into the visible region is the main feature of the absorption. Excitation wavelength-dependent two-component fluorescence characterizes the emission behaviour of these liquids. That ion association gives rise to the long absorption tail and shifting fluorescence maximum, which appears to be common to most of the imidazolium ionic liquids, is evident from the effect of the conventional solvents.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Imidazolium Ionic Liquids; UV-Vis Absorption; Excitation Wavelength-dependent Fluorescence; Red-edge Effect; Solvent Effect
ID Code:51624
Deposited On:29 Jul 2011 04:05
Last Modified:18 May 2016 05:29

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