Understanding the balance between ionic and dispersion interactions in aqueous micellar media
Article Abstract:
The interaction of selected rhodamine alkyl esters are studied with cationic, anionic, and neutral micelles to elucidate the balance between ionic and dispersion forces operative in the systems using steady-state and time-resolved optical spectroscopies. Dispersion interactions assume substantial importance in determining the dynamics of micellar media because of the ionic compensation effect, according to observation.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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Dynamics of 7-azatryptophan and tryptophan derivatives in micellar media. The role of ionic charge and substituent structure
Article Abstract:
The motional and population relaxation dynamics of several derivatives of 7-azatryptophan (7AT) and tryptophan (TRP) in anionic, cationic and neutral surfactant solutions above the surfactant critical micelle concentrations is investigated. The studies indicate persistent interactions between probe and micelle, which are determined by a balance between ionic charges and dispersion interactions.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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Gauging molecular interactions between substrates and adsorbates, substrate mediation of surface-bound chromophore vibronic coupling
Article Abstract:
It was found that the steady-state spectroscopy of pyrene chromophores bound to several interfaces points to extensive aggregation. Time-resolved measurements indicate that there was substantial coupling between the pyrene chromophone and conductive substrates.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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