Photon pressure-induced association of nanometer-sized polymer chains in solution
Article Abstract:
The minimum size of polymer chains affected by photon pressure and the chemical property most affected by photon pressure were determined. Aqueous solutions of two series of polymers with pendant carbazolyl groups attached to the polymer backbone by chains of differing lengths were investigated. A focused infrared laser beam was used in subjecting the polymer solutions to photon pressure that led to the growth of single microparticles. It was found out that polymer chains have minimum sizes from 10 to 20 nm before the photon pressure overcomes Brownian motion and electrostatic repulsion.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Laser-controlled assembling of repulsive unimolecular micelles in aqueous solution
Article Abstract:
An amphiphilic random copolymer, which has hydrophilic and hydrophobic segments in a single chain and forms a monopolymer micelle through self-organization, was given photon pressure via a focused near-infrared laser beam. Prolonged irradiation with the beam resulted in the formation of a single microparticle at the focal point. This microparticle dissolves very quickly after switching off the laser beam. The behavior suggests that the electrostatic repulsion between the micelles may be overcome by photon pressure.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Interaction of pyrene-labeled hydrophobically modified polyelectrolytes with oppositely charged mixed micelles studied by fluorescence quenching
Article Abstract:
A study was conducted to analyze the interaction of pyrene-labeled hydrophobically altered polyelectrolytes with oppositely charged mixed micelles. Fluorescence quenching was utilized to carry out the analysis using the Hitachi F-4500 fluorescence spectrometer. A kinetic model was utilized to determine the binding constant, residence time and association rate constant for the polymer-micelle interaction.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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