Synthesis, electrochemical and spectroelectrochemical properties of highly soluble tetra substituted phthalocyanines with [4-(thiophen-3-yl)-phenoxy]

Electrochemical and spectroelectrochemical properties of thiadiazole substituted metallo-phthalocyanines

“…7a). These spectral changes are consistent with the spectral changes of TiPc type complexes in the literature [14][15][16][17] and these spectral changes indicate [Ti IV OPc −2 ]/[Ti III OPc −2 ] 1− process. Decreasing of the Q band without shifting and observation of new bands at 550 and 589 nm observed during the second reduction reaction (Fig.…”

“…For example, Nyokong and Tau also suggested a two electron reduction assigned to metal and ring reduction followed with a metal and then ring reduction sequence [19]. In previous years, we have extensively examined different TiPc type complexes to clarifying the controversy and to understand the effects of substituents, axial ligands, and electrolyte systems to the redox assignment of the complexes [14,15,20]. Now here, we have investigated the redox properties of Ti IV OPc bearing thiadiazole substituents and oxygen axial ligand.…”

“…Although, there is an inconsistency on the assignments of the redox couple of TiOPc in the literature, at least two metal-based reduction reactions were reported for these type complexes. Different reduction mechanisms for TiOPc type complexes were reported in the literature [14][15][16][17]. TiOPc type complexes generally show four sequential reduction processes and "metal-metal-ring-ring" based sequential reductions and/or "metal-ring-metal-ring" based sequential reductions were commonly suggested.…”

Synthesis, electrochemistry and in situ spectroelectrochemistry of novel hexadeca-substituted phthalocyanines with three different groups

“…4). Due to the redox inactive nature of Cu 2+ center of the complex, all redox processes are easily assigned to the electron transfer reactions of Pc center of the complex [46][47][48][49][50][51][52][53][54]. The first reduction reaction, III a /III c at À0.64 V (DE p = 61 m V and I p,a /I p,c = 0.97), is electrochemically and chemically reversible, while the second one, IV a /IV c at À1.02 V (DE p = 64 m V and I p,a /I p,c = 0.91), is chemically quasi-reversible.…”

Novel, Highle Soluble Non-Peripherally Phthalocyanines Bearing Bulky Groups Containing Fluorine Atoms: Synthesis, Characterization, Spectral and Improved Photophysicochemical Properties

“…The value is also higher than typical metallophthalocyanines complexes [22] and unsubstituted ZnPc (Φ F =0.17) [23]. The higher values (2 and 3) can also be explained by the non-aggregation properties and metal effect in the Pc core [24][25][26]. The cobalt phthalocyanine (4) showed the lowest fluorescence value (0.01) due to paramagnetic nature of the metal [27].…”