Electrochemistry and spectroelectrochemistry of substituted tetrabenzotriazaporphine

Abstract

. Can. J. Chem. 71, 742 (1993).The spectral and electrochemical properties of tetrabenzo [5, lO,lS]triazaporphine (TBTAP) and its magnesium derivatives having a long alkyl chain attached to the meso carbon have been studied. Both metal-free and metallated species show typical metal-free phthalocyanine-like spectra. Two reduction and two oxidation redox couples have been observed. The cation, anion, and dianion species of these porphyrin derivatives have been electrochemically generated and their electronic spectra are recorded.

Monomeric and Polymeric Tetra-aminophthalocyanatocobalt(II) Modified Electrodes: Electrocatalytic Reduction of Oxygen

“…Studies of the surface electrochemistry of metallophthalocyanine species provide a rapid and easy means to explore their electrochemical properties [21][22][23][33][34][35][36][37][38], in the absence of potentially complicating solution equilibria. The surface electrochemical behaviour of adsorbed monomeric Co(II)TAPc (not polymerized) was studied on several different graphite surfaces: HOPG and BPG.…”

Voltammetric and spectroelectrochemical properties of titanylphthalocyanines bearing catecholato and naphthalenediolato moieties

“…Spectral changes in Fig. 4D for the oxidation processes of 1 are typical of ring-based oxidation in phthalocyanine complexes [23][24][25][26][27][28][29][30][31][32][33]. The process has isosbestic points at 323, 366, 450 and 763 nm in the spectra.…”

“…The spectral changes in Fig. 4B are typical of ligand-based reduction assigned to [Ti III YPc 2À ] 1À / [Ti III YPc 3À ] 2À redox process [28][29][30]. The process at À1.00 V vs. SCE potential application has isosbestic points at 311, 565 and 790 nm in the spectra.…”

Functional fluoro substituted tetrakis-metallophthalocyanines: Synthesis, spectroscopy, electrochemistry and spectroelectrochemistry

“…j Substituted with tetra-{2-(2-thienyl)}ethoxy groups. of the new bands in the MLCT regions are characteristics of ringbased processes [23,[27][28][29][30][31][32][33][34][35]. Color change from green to blue support the generation of monoanionic [Zn (II) Pc (À3)] À1 species during the process.…”

“…The process has isosbestic points at 278, 433 and 534 nm in the spectra. These spectroscopic changes indicate the formation of the [Zn(II)Pc(À1)] + species, and then decomposition of the [Zn(II)Pc(À1)] + species during the 0.75 V potential application [23,[30][31][32][33][34][35].…”