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Article dans une revue
Efficient synthesis of a new electroactive polymer of Co(II) porphine by in-situ replacement of Mg(II) inside Mg(II) polyporphine film
Abstract : This paper presents an easy, efficient and reproducible way to obtain cobalt polyporphine films. A fast three step process (less than one hour) based on electrosynthesis of magnesium polyporphine of type I followed by a demetallation in acid medium and then cobalt insertion inside the porphine units allowed us to obtain an interesting material with a high density of active cobalt(II) centers. Kinetics studies were conducted to determine the best conditions for the demetallation and remetallation steps. Moreover, IRATR and UV-visible measurements attested that the initial molecular structure of the porphine units was kept during the three step process. Qualitative composition of polyporphine films has been confirmed via XPS and EDX methods. In situ specific conductivity of these polyporphine polymers of type I has been determined as a function of the imposed potential, i.e. of the oxidation degree. (C) 2016 Elsevier Ltd. All rights reserved.
Keywords :
electroactive materials
electropolymerization
ion-exchange
cobalt porphine
non-substituted porphyrins
metalloporphines
molecular electronic junctions
glassy-carbon electrode
free-base porphyrins
reactivity correlations
reduction potentials
conducting polymer
cobalt porphyrins
aqueous-solution
thin-films
electroreduction
https://hal-univ-bourgogne.archives-ouvertes.fr/hal-01402476
Contributeur : Icmub - Université de Bourgogne <>
Soumis le : jeudi 24 novembre 2016 - 16:50:56
Dernière modification le : mardi 24 novembre 2020 - 12:56:02
Contributeur : Icmub - Université de Bourgogne <>
Soumis le : jeudi 24 novembre 2016 - 16:50:56
Dernière modification le : mardi 24 novembre 2020 - 12:56:02