ChemInform Abstract: Electrochemical Redox Properties and Spectral Features of Supermolecular Porphyrins.

[Formula: see text]-methyl fused nickel(II) porphyrin was synthesized by a facile synthetic route in excellent yield. The effect of the electron-donating methyl group on spectral and electrochemical redox properties was analyzed by comparing the electrochemistry with that of its precursors. [Formula: see text]-methylated fused nickel(II) porphyrin exhibited a red-shifted absorption spectrum ([Formula: see text] 6–13 nm) and a 180[Formula: see text]mV anodic shift in the first ring oxidation as well as a 210[Formula: see text]mV shift in reduction with respect to its Ni(II)-fused porphyrin precursor (Ni[Formula: see text]-(NH)TPP). However, the absorption spectral features and redox potentials of N-methyl fused nickel(II) porphyrin are marginally shifted as compared to its immediate precursor, [Formula: see text]-formyl Ni(II)-fused porphyrin. Notably, Ni(II)(N-CH[Formula: see text](CHO)TPP exhibited a third oxidation at 1.51[Formula: see text]mV, corresponding to oxidation of Ni(II) to Ni(III) due to the presence of “push–pull” [Formula: see text] substituents.

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Electrochemical redox properties and spectral features of supermolecular porphyrins

Inorganic Chemistry ◽

10.1021/ic00214a032 ◽

1985 ◽

Vol 24 (20) ◽

pp. 3253-3257 ◽

Cited By ~ 25

Author(s):

G. Bhaskar Maiya ◽

V. Krishnan

Keyword(s):

Redox Properties ◽

Spectral Features ◽

Electrochemical Redox

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Unsymmetrical nonplanar ‘push–pull’ β-octasubstituted porphyrins: facile synthesis, structural, photophysical and electrochemical redox properties

Dalton Transactions ◽

10.1039/c9dt02792k ◽

2019 ◽

Vol 48 (40) ◽

pp. 15002-15011 ◽

Cited By ~ 2

Author(s):

Pinki Rathi ◽

Ray Butcher ◽

Muniappan Sankar

Keyword(s):

Redox Properties ◽

Spectral Features ◽

Facile Synthesis ◽

Electrochemical Redox ◽

Homo Lumo

β-Octasubstituted porphyrins having three different substituents (Ph, Br and NO2) have been synthesized. They exhibited highly red-shifted absorption spectral features with tunable redox properties leading to a very low HOMO–LUMO gap as compared to MTPPs.

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Selective Bromination of β ‐Positions of Porphyrin by Self‐Catalytic Behaviour of VOTPP: Facile Synthesis, Electrochemical Redox Properties and Catalytic Application

European Journal of Inorganic Chemistry ◽

10.1002/ejic.202100116 ◽

2021 ◽

Vol 2021 (17) ◽

pp. 1685-1694

Author(s):

Mannar R. Maurya ◽

Ved Prakash ◽

Fernando Avecilla ◽

Muniappan Sankar

Keyword(s):

Redox Properties ◽

Facile Synthesis ◽

Catalytic Application ◽

Catalytic Behaviour ◽

Electrochemical Redox

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β-Tetrabromo-meso-tetrakis(4′-substituted phenyl)porphyrins: synthesis and electrochemical redox properties

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424611003768 ◽

2011 ◽

Vol 15 (09n10) ◽

pp. 883-889 ◽

Cited By ~ 2

Author(s):

P. Bhyrappa ◽

V. Velkannan

Keyword(s):

Linear Relationship ◽

Redox Properties ◽

Redox Potentials ◽

Electrochemical Redox ◽

Hammett Parameter

A series of 2,3,12,13-tetrabromo-5,10,15,20-tetrakis(4′-substituted phenyl)porphyrins, H2 T(4′-R Ph) PBr4 ( R = OCH3 , t-butyl, H and CO2CH3 ) and their metal ( Co(II) , Cu(II) , and Zn(II) ) complexes were synthesized and their electrochemical redox properties were explored. The plot of E1/2vs. the Hammett parameter (σp) of the substituents (R) follow a fairly linear relationship for the ring centered redox potentials.

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