Synthesis, spectral and electrochemical characterization of non-aggregating α-substituted vanadium(IV)-oxo phthalocyanines

doi:10.1142/s1088424605000447

Paper

Synthesis, spectral and electrochemical characterization of non-aggregating α-substituted vanadium(IV)-oxo phthalocyanines

Published May 1, 2005 · DOI · Zhou Jiang, Zhong-ping Ou, N. Chen

Journal of Porphyrins and Phthalocyanines

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Abstract

Two α-substituted vanadium-oxo phthalocyanines, [(OC6H3(t-Bu)2)4Pc]VO and [(OC8H17)4Pc]VO, where OC6H3(t-Bu)2 is 2,4-di-tert-butylphenoxy and OC8H17 is 2,2,4-tri-methyl-3-pentoxy, were synthesized and characterized by elemental analysis, mass spectrometry, UV-visible, IR, ESR spectroscopy and electrochemistry. Both complexes have good solubility and do not aggregate in polar or non-polar solvents. Three reductions and two oxidations can be observed in DMF containing 0.2 M TBAP. A HOMO-LUMO gap of ~1.4 V is seen for both complexes. The first two one-electron reductions and first oxidation are reversible diffusion controlled electrode processes under the given experimental conditions. The effects of solvent and phthalocyanine macrocycle substituents on the Q bands of the electronic absorption spectra are discussed.

Study Snapshot

-substituted vanadium-oxo phthalocyanines show good solubility and do not aggregate in polar or non-polar solvents, with reversible diffusion-controlled electrode processes.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Synthesis, spectral and electrochemical characterization of non-aggregating α-substituted vanadium(IV)-oxo phthalocyanines

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