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Electrochemical and spectroelectrochemical studies of tert-butyl-substituted aluminum phthalocyanine

Tijdschriftbijdrage - e-publicatie

Tetra-tert-butylphthalocyanine aluminum (III) chloride was studied by voltammetric and potential-resolved spectroelectrochemical methods in a non-coordinating solvent o-dichlorobenzene. Five redox transitions were found including two oxidation waves at 0.18 and 0.90 V and three reduction waves at −1.28, −1.65, and −2.63 V vs. Fc+/Fc. Electrochemical reversibility of the first oxidation and reduction processes was assessed by using the diagnostic criteria of cyclic voltammetry. First comprehensive spectroelectrochemical characterization of oxidation of the aluminum phthalocyanine is reported. Moreover, potential-resolved spectroelectrochemical titration revealed strong influence of aggregation on the UV–vis spectra and the half-wave potentials of the first oxidation transition and disclosed the presence of the partially oxidized complex in the initial solution, which noticeably affected the spectrum of the neutral form.
Tijdschrift: Polyhedron
ISSN: 0277-5387
Volume: 200
Jaar van publicatie:2021
Trefwoorden:A1 Journal article
BOF-publication weight:1
CSS-citation score:1
Authors from:Higher Education