The effects of point of substitution on the formation of manganese phthalocyanine-based molecular materials Surface characterization and electrocatalysis
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Date
2010
Authors
Akinbulu, I.A
Khene, S
Nyokong, T
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Molecular films of manganese phthalocyanine (MnPc) complexes, tetra-substituted with 2-diethylaminoethanethio at the peripheral (Mn(OAc)-β-TDEAETPc, 1) and non-peripheral (Mn(OAc)-α-TDEAETPc, 2) positions were formed on glassy carbon electrode by electropolymerization and electrodeposition respectively. Atomic force microscopy images confirmed the presence of the films and revealed significant morphological differences. The films exhibited an electrocatalytic activity towards the oxidation of the insecticide, bendiocarb. Hydrodynamic technique, using rotating disc electrode voltammetry, was used to investigate the kinetics of electro-oxidation of the insecticide. Morphological differences of the films significantly influenced kinetic parameters. Values of Tafel slopes, obtained from Tafel plots, suggested that
catalysis of bendiocarb occurred via outer sphere mechanism
Description
Staff Publications
Keywords
Molecular films , Manganese phthalocyanine , Electropolymerization , lectro-oxidation of the insecticide , Research Subject Categories::NATURAL SCIENCES::Chemistry
Citation
Akinbulu, I. A., Khene, S., & Nyokong, T. (2010). The effects of point of substitution on the formation of manganese phthalocyanine-based molecular materials Surface characterization and electrocatalysis. Thin Solid Films, Vol.519(2), 911-918pp.