Issue 12, 2004
From the journal:

Physical Chemistry Chemical Physics

Solvation dynamics of Nile Red in a room temperature ionic liquid using streak camera

Satyen Saha,a   Prasun K. Mandalb  and  Anunay Samanta*b  

* Corresponding authors

a Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
E-mail: saha@chem.s.u-tokyo.ac.jp

b School of Chemistry, University of Hyderabad, Hyderabad, India
E-mail: assc@uohyd.ernet.in
Fax: +91 40 2301 2460
Tel: +91 40 2301 1594

Abstract

Time-resolved fluorescence behavior of Nile Red (NR) has been studied using a streak camera in a room temperature ionic liquid, [bmim]PF6. Wavelength dependent fluorescence decay and time dependent fluorescence Stokes shift have been observed. The time-correlated spectral shift function, C(t), indicator for solvation dynamics of NR in [bmim]PF6, is found to be biexponential with two well-separated time constants: 0.13 and 1.25 ns. The short and the long component of the dynamics have been explained in terms of the translational motion of the anion and a collective motion of the cation and anion, respectively. The effect of two different conformers of the cation of this room temperature ionic liquid, as revealed in the recent studies, on the long time constant is also discussed.

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Article information

DOI
https://doi.org/10.1039/B316943J
Article type
Paper
Submitted
24 Dec 2003
Accepted
21 Apr 2004
First published
13 May 2004

Phys. Chem. Chem. Phys., 2004,6, 3106-3110

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Solvation dynamics of Nile Red in a room temperature ionic liquid using streak camera

S. Saha, P. K. Mandal and A. Samanta, Phys. Chem. Chem. Phys., 2004, 6, 3106 DOI: 10.1039/B316943J

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