Issue 15, 2010
From the journal:

Physical Chemistry Chemical Physics

Effect of polymer, poly(ethylene glycol)(PEG-400), on solvent and rotational relaxation of coumarin-480 in an ionic liquid containing microemulsions†

Rajib Pramanik,a   Souravi Sarkar,a   Chiranjib Ghatak,a   Palash Setuaa  and  Nilmoni Sarkar*a  

* Corresponding authors

a Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
E-mail: nilmoni@chem.iitkgp.ernet.in
Fax: 91-3222-255303

Abstract

The effect of a polymer, polyethylene glycol with a molecular weight of 400 (PEG-400), on the dynamics of solvent and rotational relaxation have been investigated in [bmim][BF4]/TX100/cyclohexane microemulsions using steady state and time resolved fluorescence spectroscopy as a tool and coumarin 480 (C-480) as a fluorescence probe. The size of the microemulsions increases with addition of PEG-400, which was revealed by dynamic light scattering (DLS) measurement. This leads to faster collective motion of the cations and anions of [bmim][BF4], which contributes to faster solvent relaxation in microemulsions.

Graphical abstract: Effect of polymer, poly(ethylene glycol)(PEG-400), on solvent and rotational relaxation of coumarin-480 in an ionic liquid containing microemulsions

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Article information

DOI
https://doi.org/10.1039/B922867E
Article type
Paper
Submitted
02 Nov 2009
Accepted
28 Jan 2010
First published
24 Feb 2010

Phys. Chem. Chem. Phys., 2010,12, 3878-3886

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Effect of polymer, poly(ethylene glycol)(PEG-400), on solvent and rotational relaxation of coumarin-480 in an ionic liquid containing microemulsions

R. Pramanik, S. Sarkar, C. Ghatak, P. Setua and N. Sarkar, Phys. Chem. Chem. Phys., 2010, 12, 3878 DOI: 10.1039/B922867E

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