Paul, Aniruddha ; Mandal, Prasun Kumar ; Samanta, Anunay (2005) How transparent are the imidazolium ionic liquids? A case study with 1-methyl-3-butylimidazolium hexafluorophosphate, [bmim][PF6] Chemical Physics Letters, 402 (4-6). pp. 375-379. ISSN 0009-2614
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.cplett.2004.12.060
Abstract
Imidazolium ionic liquids are generally regarded as optically transparent materials. Herein, we report on the optical behaviour of a typical imidazolium ionic liquid that not only suggests that [bmim][PF6] does have significant absorption in the UV region, but it also brings into light a very interesting fluorescence behaviour. The fluorescence peak position of [bmim][PF6] is found to be very strongly dependent on the excitation wavelength. The unusual fluorescence response of [bmim][PF6] is attributed to the presence of several energetically different associated forms of the imidazolium ions in the ionic liquid.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 51589 |
| Deposited On: | 29 Jul 2011 04:04 |
| Last Modified: | 29 Jul 2011 04:04 |
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