Studies on the Phenol Oxidation by H2O2 Catalyzed by Metallomicelle Made from Crowned Schiff Base Co(II) Complexes Containing Benzoaza-15-crown-5 |
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| Authors: | Wei Hu Jian-zhang Li Ju Du Chang-wei Hu |
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| Institution: | 1. Department of Chemistry , Sichuan University of Science and Engineering , Zigong , Sichuan , China;2. Faculty of Chemistry , Sichuan University , Chengdu , Sichuan , P.R. China;3. Department of Chemistry , Sichuan University of Science and Engineering , Zigong , Sichuan , China;4. Faculty of Chemistry , Sichuan University , Chengdu , Sichuan , P.R. China |
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| Abstract: | Three novel cobalt(II) complexes of the benzoaza-15-crown-5 Schiff base, CoL1, CoL2, and CoL3 were synthesized and characterized. Metallomicelles made from CoL and surfactants (CTAB, LSS, and Brij35) were used as mimetic peroxidase in the catalytic oxidation of phenol by H2O2. For comparison, the catalytic activity of the complexes (CoL1, CoL2, and CoL3) were also investigated. The mechanism and a kinetic mathematic model of the phenol catalytic oxidation were studied. The acid effect of reaction system, structural effect of the complexes, and effect of temperature on the rate of the phenol catalytic oxidation by the mimetic peroxidase were discussed. The results show that the Schiff base cobalt(II) complexes and their metallomicelles as peroxidase mimics exhibit good catalytic activity and similar catalytic character to natural enzyme. |
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| Keywords: | Kinetics metallomicelle mimetic peroxidase phenol oxidation Schiff base cobalt(II) complexes |
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