Interaction of the Imidazole Ring with Surface Anchored Polypyrrole Latex Particles

Interaction of the Imidazole Ring with Surface Anchored Polypyrrole Latex Particles

Sterically stabilized polypyrrole latex particles attached to Au substrates were observed to adsorb imidazole and histidine from aqueous solutions by ellipsometry. In initial studies the imidazole ring adsorption was mainly irreversible, but after electrochemical reduction–oxidation cycling of the p...

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Veröffentlicht in:Journal of colloid and interface science 1998-01, Vol.197 (2), p.179-184
Hauptverfasser: Bjorklund, Robert B., Armes, Steven P., Maeda, Shuichi, Luk, Shen Y.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Exact sciences and technology
histidine
imidazole
latex particles
Organic polymers
Physicochemistry of polymers
polypyrrole
Properties and characterization
Surface properties
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container_end_page 184
container_issue 2
container_start_page 179
container_title Journal of colloid and interface science
container_volume 197
creator Bjorklund, Robert B.
Armes, Steven P.
Maeda, Shuichi
Luk, Shen Y.
description Sterically stabilized polypyrrole latex particles attached to Au substrates were observed to adsorb imidazole and histidine from aqueous solutions by ellipsometry. In initial studies the imidazole ring adsorption was mainly irreversible, but after electrochemical reduction–oxidation cycling of the particles in HCl solution only reversible adsorption of the heterocyclic compounds was observed. Adsorption experiments on control surfaces containing the different components of the latex particles identified iron species incorporated during synthesis as the probable irreversible adsorption sites. The reversible adsorption sites were possibly due to the acidic properties of the polypyrrole core in the particles.
doi_str_mv 10.1006/jcis.1997.5252
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subjects Applied sciences
Exact sciences and technology
histidine
imidazole
latex particles
Organic polymers
Physicochemistry of polymers
polypyrrole
Properties and characterization
Surface properties
title Interaction of the Imidazole Ring with Surface Anchored Polypyrrole Latex Particles
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