Cobaltabisdicarbollide anion [Co(C2B9H11)2]- as doping agent on intelligent membranes for ion capture

C. Masalles, F. Teixidor, S. Borrós, C. Viñas

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32 Cites (Scopus)


It has been proven that the non-nucleophilic, low charge density and weakly coordinating cobaltabisdicarbollide anion [Co(C2B9H11)2]- , can be highly relevant as dopant for conducting organic polymers. We have developed a new material based on polypyrrole (PPy) which uses the cobaltabisdicarbollide anion as a doping agent. This anion provides enhanced properties to PPy, the most striking one is the high over oxidation resistance. The high volume of [Co(C2B9H11)2]- imposes low mobility inside the polymeric matrix thus preventing dopant leakage when a reducing potential is applied on the material. Under these conditions the cation capture (Eq. 1) prevails during the reversible electrochemical redox process, also called doping-undoping. [PPyn+(A-)n]+ nC+ charge-discharge process show an almost perfect reversibility of cation exchange process and no detectable degradation of the membrane due to dopant loss or over oxidation even after 40 successive cycles.

Idioma originalAnglès
Pàgines (de-a)239-246
Nombre de pàgines8
RevistaJournal of Organometallic Chemistry
Estat de la publicacióPublicada - 1 de set. 2002


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