Abstract
A new class of sterically hindered dendritic phthalocyanines was synthesized to evaluate the effects of the dendritic structure on the electrochemical properties and catalytic activities. This dendritic phthalocyanine possesses a well-defined structure which has a nanosized, three-dimensional shape. The dendritic structure around the cobalt phthalocyanine prevented the molecular aggregation among phthalocyanine moieties in polar solvents and thin films. Electrochemical studies indicated that the electron-transfer process was hindered in the dendritic cobalt phthalocyanine. This is the result of a shielding effect by the dendrimer branch on the cobalt phthalocyanine core. Thiol oxidation catalyzed by the dendritic cobalt phthalocyanine was carried out in the presence of dioxygen. A high stability of the catalytic site was observed for the dendritic cobalt phthalocyanine.
Original language | English |
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Pages (from-to) | 3495-3500 |
Number of pages | 6 |
Journal | Chemistry - A European Journal |
Volume | 5 |
Issue number | 12 |
Publication status | Published - 1999 Dec 1 |
Keywords
- Catalysis
- Cyclic voltammetry
- Dendrimers
- Metallodendrimers
- Phthalocyanines
ASJC Scopus subject areas
- Catalysis
- Organic Chemistry