Advanced Materials

Cover image for Vol. 27 Issue 8

Editor-in-Chief: Peter Gregory, Deputy Editors: Mary Farrell, Duoduo Liang, Lorna Stimson

Online ISSN: 1521-4095

Associated Title(s): Advanced Energy Materials, Advanced Engineering Materials, Advanced Functional Materials, Advanced Healthcare Materials, Advanced Materials Interfaces, Advanced Optical Materials, Particle & Particle Systems Characterization, Small

March 14, 2002

Unidirectional cation barriers.....

Crystalline films on the surface of a polypyrrole are obtained electrochemically from cobalt(bis-dicarbolide)-doped polypyrrole in aqueous Bu4N+Cl-, or (less effectively) in Bu4P+Cl- solution. The films, which are unidirectional (inwards) cation barriers, are highly stable in aqueous media, apparently due to the anion's extremely low water solubility, but easily dissolved by acetonitrile (F. Teixidor et al., March 18; Adv. Mater. 2002, 14, 449-452).

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