Jump to main content
Jump to site search

Issue 61, 2015
Previous Article Next Article

Modification of the photophysics of 3-hydroxyflavone in aqueous solutions of imidazolium-based room temperature ionic liquids: a comparison between micelle-forming and non micelle-forming ionic liquids

Author affiliations

Abstract

In the present article, we have investigated the photophysical behavior of 3-hydroxyflavone (3HF), an excited state intramolecular proton transfer (ESIPT) probe, in aqueous solutions of two imidazolium-based room temperature ionic liquids (RTILs), one micelle-forming and the other non micelle-forming, exploiting steady state and time resolved fluorometric techniques. The study unveils that the ESIPT process of 3HF is modified substantially in the micelle-forming RTIL as compared to that in the other RTIL. The critical micellar concentration (CMC) of the micelle-forming RTIL has been determined from both steady state and time resolved data. The study suggests that 3HF resides within the micellar phase and experiences a significantly less polar environment in its vicinity than in the non micelle-forming ionic liquid. A comparative study with the probe in the micelle-forming ionic liquid and a conventional anionic surfactant of a similar hydrophobic chain length reveals that 3HF experiences an appreciably less polar environment in the RTIL micelle as compared to the conventional anionic micelle.

Graphical abstract: Modification of the photophysics of 3-hydroxyflavone in aqueous solutions of imidazolium-based room temperature ionic liquids: a comparison between micelle-forming and non micelle-forming ionic liquids

Back to tab navigation

Supplementary files

Article information


Submitted
04 Mar 2015
Accepted
21 May 2015
First published
27 May 2015

RSC Adv., 2015,5, 49054-49061
Article type
Paper
Author version available

Modification of the photophysics of 3-hydroxyflavone in aqueous solutions of imidazolium-based room temperature ionic liquids: a comparison between micelle-forming and non micelle-forming ionic liquids

S. Ghosh and N. Chattopadhyay, RSC Adv., 2015, 5, 49054
DOI: 10.1039/C5RA03833B

Social activity

Search articles by author

Spotlight

Advertisements