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Polypyrrole Materials Doped with Weakly Coordinating Anions: Influence of Substituents and the Fate of the Doping Anion During the Overoxidation Process by Sébastien Gentil; Eulalia Crespo; Isabel Rojo; Aurélie Friang; Clara Viñas; Francesc Teixidor; Bohumír Grüner; Detlef Gabel is a Materials Science article available to read on EtoBox.
What is Polypyrrole Materials Doped with Weakly Coordinating Anions: Influence of Substituents and the Fate of the Doping Anion During the Overoxidation Process about?
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(C 2 B 9 H 11 ) 2 ] K , [B 12 H 12 ] 2K and [B 12 H 11 NH 3 ] K . 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 in [Co(C 2 B 9 H 11 ) 2 ] K after incorporation of electron-withdrawing substituents with no electron back-donation (5) globular, rigid and large monoanions are less suitable for enhanced ORL values than elongated and non-rigid species (6) adequate anion's substitution produce a rise in the ORL of the material, thus polyether side-arms are beneficial with [Co(C 2 B 9 H 11 ) 2 ] K , whereas, T-shaped methylaryl groups are appealing in [B 12 H 11 NH 3 ] K based materials, respectively, (7) substituents on
Who reads Polypyrrole Materials Doped with Weakly Coordinating Anions: Influence of Substituents and the Fate of the Doping Anion During the Overoxidation Process?
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- Author
- Sébastien Gentil; Eulalia Crespo; Isabel Rojo; Aurélie Friang; Clara Viñas; Francesc Teixidor; Bohumír Grüner; Detlef Gabel
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0032-3861)
- Published
- 2005
- Language
- EN
- Field
- Materials Science (Physical Sciences)