Small-angle X-ray and neutron scattering from dilute solutions of cesium perfluorooctanoate. Micellar growth along two dimensions
Article Abstract:
The curve profiles of small-angle X-ray and neutron scattering in the isotopic phase of the cesium perfluorooctanoate-water system in the concentration range 0.065-0.5M at 30 degrees C were analyzed . A double-layered ellipsoid form factor in combination with the rescaled mean spherical approximation for the intermicellar structure factor was used in the analysis. The results indicate micellar growth along two dimensions as shown by the increase of both the aggregate number and the degree of counterion binding with the increase in surfactant concentration.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Alpha-terthiophene in micellar solutions: influence of micellar size and charge on the terthiophene photophysics and photochemical reactivity
Article Abstract:
A study was conducted to examine the photophysics and photochemical reactivity of alpha-terthiophene (aT) in anionic, cationic and nonionic micellar solutions. The aT was found to follow a Poissonian distribution for the larger micelles, which was used to change the local aT concentrations. For the smaller micelles, it was observed that they can host only one aT per micelle. The formation of the aT radical cation was found to be biphotonic and is the highest in the anionic system and lowest in the nonionic one.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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(super 133)Cs NMR investigation of anisotropic block copolymers
Article Abstract:
The behavior of Cs+ cations dissolved in an anisotropic synthetic polymer structure was studied to determine the interactions between the Cs+ ions and the polymeric chains. Results show strong interactions between Cs+ ions and the polymeric chains. Cations undergo an anisotropic motion similar to those of polymeric segments in both swelled and dried structures. The anisotropic character of the Cs+ orientation in dried materials also increased with increasing temperature.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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