Cyclic voltammetric study of cobalt poly-4-t-butylpyridine ligand complexes on glassy carbon electrodes : electrolyte dependence and mechanistic considerations
Polypyridyl complexes of Co(II/III) have been gaining prominence as potential replacements for I(-)/I(3)(-) as mediators in dye sensitized solar cells. In that regard, homoleptic pseudo-octahedral complexes of 4,4'-di-t-butyl-2,2'-bipyridine, [Co(DTB)(3)](2+/3+), and 4,4',4″-tri-t-but...
| Publié dans: | Langmuir : the ACS journal of surfaces and colloids. - 1985. - 29(2013), 2 vom: 15. Jan., Seite 825-31 |
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| Auteur principal: | |
| Autres auteurs: | , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2013
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| Accès à la collection: | Langmuir : the ACS journal of surfaces and colloids |
| Sujets: | Journal Article |
| Résumé: | Polypyridyl complexes of Co(II/III) have been gaining prominence as potential replacements for I(-)/I(3)(-) as mediators in dye sensitized solar cells. In that regard, homoleptic pseudo-octahedral complexes of 4,4'-di-t-butyl-2,2'-bipyridine, [Co(DTB)(3)](2+/3+), and 4,4',4″-tri-t-butyl-2,2':6,2″-terpyridine, [Co(TTT)(2)](2+/3+), have been of particular interest. These complexes show extreme electrode surface and electrolyte dependent electrochemical behavior. Below, we report on the cyclic voltammetric behavior of these two complexes at glassy carbon electrodes in two different electrolytes. The electrochemical data suggests that the Co(II/III) electron transfer is significantly nonadiabatic, especially for [Co(DTB)(3)](2+/3+) in LiClO(4) electrolyte |
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| Description: | Date Completed 17.06.2013 Date Revised 15.01.2013 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/la304262a |