Ghosh, Suhrit and Krishnan, Anu and Das, Puspendu K and Ramakrishnan, S (2003) Determination of critical micelle concentration by hyper-Rayleigh scattering. In: Journal of the American Chemical Society, 125 (6). 1602-1606 .
PDF
Determination_of_Critical.pdf - Published Version Restricted to Registered users only Download (85kB) | Request a copy |
|
PDF
Determination_of_critical_micelle.pdf - Published Supplemental Material Restricted to Registered users only Download (28kB) | Request a copy |
Abstract
The critical micelle concentration (CMC) of several surfactants that contain an NLO chromophore, either at the hydrocarbon tail, or at the hydrophilic headgroup, or even as a counterion, was determined by hyper-Rayleigh scattering (HRS). In all cases, the HRS signal exhibited a similar variation with surfactant concentration, wherein the CMC is inferred from a rather unprecedented drop in the signal intensity. This drop is attributed to the formation of small pre-micellar aggregates, whose concentrations become negligible above CMC. In addition, a probe molecule, which upon protonation yielded a species with significantly enhanced HRS intensity, was developed and its utility for the determination of the CIVIC of simple fatty acids was demonstrated.
Item Type: | Journal Article |
---|---|
Publication: | Journal of the American Chemical Society |
Publisher: | American Chemical Society |
Additional Information: | Copyright of this article belongs to American Chemical Society. |
Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry |
Date Deposited: | 08 Aug 2011 07:08 |
Last Modified: | 08 Aug 2011 07:08 |
URI: | http://eprints.iisc.ac.in/id/eprint/39777 |
Actions (login required)
View Item |