Electrochemical and Spectroelectrochemical Properties of Free-Base Pyridyl- and N -Alkyl-4-Pyridylporphyrins in Nonaqueous Media

Yan Cui; Lihan Zeng; Yuanyuan Fang; Jialiang Zhu; Hai-Jun Xu; Nicolas Desbois; Claude P. Gros; Karl M. Kadish

doi:10.1002/celc.201500374

Article dans une revue

Electrochemical and Spectroelectrochemical Properties of Free-Base Pyridyl- and N -Alkyl-4-Pyridylporphyrins in Nonaqueous Media

Yan Cui ¹ Lihan Zeng ¹ Yuanyuan Fang ¹ Jialiang Zhu ¹ Hai-Jun Xu ^{2, 3} Nicolas Desbois ² Claude P. Gros ^{2, *} Karl M. Kadish ^{1, *}

* Auteur correspondant

1 Department of Chemistry [University of Houston]

2 ICMUB - Institut de Chimie Moléculaire de l'Université de Bourgogne [Dijon]

3 College of Chemical Engineering, Nanjing Forestry University

Abstract : Twelve structurally related pyridyl and meso-N-methylpyridylporphyrin derivatives are investigated electrochemically in different nonaqueous media. The UV/Vis spectrum of each newly investigated porphyrin was measured before and after electro-reduction and, based on this data, the site of electron transfer is proposed. An interaction occurs between the meso-pyridyl or meso-N-alkyl-4-pyridyl substituents and the porphyrin p-ring system, the magnitude of which depends upon the number of linked pyridyl or N-alkyl-4-pyridyl groups in the compound, the solvent, the supporting electrolyte, and/or other anions added to the solution.

Keywords : electrochemistry interacting centers nonaqueous media porphyrins spectroelectrochemistry spectral characterization cationic porphyrin complex-formation dna reduction binding n n-dimethylformamide dimethylformamide aggregation potentials

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Article dans une revue

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Chimie

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https://hal-univ-bourgogne.archives-ouvertes.fr/hal-01400268
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Soumis le : lundi 21 novembre 2016 - 16:41:23
Dernière modification le : jeudi 4 août 2022 - 17:08:40

Electrochemical and Spectroelectrochemical Properties of Free-Base Pyridyl- and N -Alkyl-4-Pyridylporphyrins in Nonaqueous Media

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Electrochemical and Spectroelectrochemical Properties of Free-Base Pyridyl- and N -Alkyl-4-Pyridylporphyrins in Nonaqueous Media

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