Chemically modified opals as thin permselective nanoporous membranes.

Chemically modified opals as thin permselective nanoporous membranes. Research Abstract Details 

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Chemically modified opals as thin permselective nanoporous membranes. Abstract Text:

Michael R Newton,Andrew K Bohaty,Henry S White,Ilya Zharov,

Thin-film opals comprising three layers of 440 nm diameter SiO2 spheres were assembled on Pt electrodes and modified with amino groups on the silica surface. Diffusion of anionic, cationic, and neutral redox species through the opals was studied by cyclic voltammetry. The chemically modified opal membranes demonstrate high molecular throughput and, at low pH, selectively block transport of a cationic redox species relative to that of anionic and neutral redox species. This permselective behavior is attributed to the electrostatic interactions that are enhanced by the tortuous pathway within the opal and by the high surface area of the chemically modified spheres.

Chemically modified opals as thin permselective nanoporous membranes. Publishing Authors By Initials

MR Newton,AK Bohaty,HS White,I Zharov,

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Chemically modified opals as thin permselective nanoporous membranes. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of the American Chemical Society

VOLUME: 127

Page Numbers: 7268-9

Journal Abbreviation: J. Am. Chem. Soc.

ISSN: 0002-7863

DAY: 25

MONTH: May

YEAR: 2005

Chemically modified opals as thin permselective nanoporous membranes. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Chemically modified opals as thin permselective nanoporous membranes.

AFFILIATION: Department of Chemistry, University of Utah, Salt Lake City, 84112, USA.

Country: United States

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MEDLINETA: J Am Chem Soc

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