0029759 - ÚACH 2006 RIV GB eng J - Journal Article
Gentil, S. - Crespo, E. - Rojo, I. - Friang, A. - Viňas, C. - Teixidor, F. - Grüner, Bohumír - Gabel, D.
Polypyrrole materials doped with weakly coordinating anions: influence of substituents and the fate of the doping anion during the overoxidation process.
[Materiály založené na polypyrrolu dopované slabě koordinujícími anionty: vliv substituentu a druhu dopujícího aniontu v průběhu oxidačního procesu.]
Polymer. Roč. 46, č. 26 (2005), s. 12218-12225. ISSN 0032-3861. E-ISSN 1873-2291
Grant - others:CICYT(ES) MAT2004-01108; SGR(ES) 2001/SGR/00337
Institutional research plan: CEZ:AV0Z40320502
Keywords : overoxidation * polypyrrole * borane
Subject RIV: CA - Inorganic Chemistry
Impact factor: 2.849, year: 2005

The influence of weakly coordinating anions with different shapes and substituents has been studied to get the overoxidation resistance limit of the material, ORL. The anions utilized are derivatives of [Co(C2B9H11)(2)](-), [B12H12](2-) and [B12H11NH3](-). The following tendencies have been established (1) boron cluster monoanions are to date the anions that offer the highest stability to overoxidation of PPy doped materials (2) the ORL stability of the material can not be attributed only to the shape of the cluster (3) monoanionic clusters are far superior than dianionic to get an ORL rise (4) cluster charge density reduction results in ORL rise as has been observed. The high boron contents in these materials has permitted to learn on the fate of the doping anions during the overoxidation process. There is a built-up of the concentration of the doping anion in the electrolyte near surface area, whereas, a depletion is observed in the nearest inner layers.

Materiály založené na polypyrrolu dopované slabě koordinujícími anionty: vliv substituentu a druhu dopujícího aniontu v průběhu oxidačního procesu
Permanent Link: http://hdl.handle.net/11104/0003312