Synthesis, electrochemical and spectroelectrochemical properties of novel phthalocyanine complexes of manganese, titanium and indium

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

“…Irregular spectral changes may be due to the chemical irreversibility of the reduction reaction and formation of more than one type reduces species due to the chemical reaction of the reduced species. Decreasing of the Q-band without a shift and observation of new band in the ligand to metal charge transfer region (LMCT) are characteristic changes for the Pc based reduction of MPc type complexes [46,59,65]. Spectral changes of 4 are also different than the similar complexes in the literature.…”

“…These shoulders are most probably due to the electron transfer reaction of the products of the chemical reactions proposed above. Like 3, all redox processes of 4 are also Pc based electron transfer reactions, since In 3+ metal center is also redox inactive [59]. Incorporation of In 3+ instead of Cu 2+ into the core of Pc decreases HOMO-LUMO gap from 1.48 V to 1.37 V.…”

Water soluble quarternizable gallium and indium phthalocyanines bearing quinoline 5-sulfonic acid: Synthesis, aggregation, photophysical and electrochemical studies

“…Since compound 5 posseses electro-inactive metal center, all the processes are ligand based. The value of DE 1/2 was obtained as 1.34 V for 5, and it is compatible with the values presented in the literature for the redox-inactive metal containing phthalocyanine compounds [49][50][51]. All of the redox couples of 5 show quasireversible electrochemical behavior with respect to DE p values and I p,a /I p,c ratios at all scan rates (Table 1).…”

Synthesis and electrochemistry of phthalocyanines bearing [(3,4-dimethoxybenzyl)oxy] groups

“…On the other hand, cobalt and titanium phthalocyanine complexes 5 and 7 have redox active metal centers, and thus they generally give metal-based redox processes. 51 While cobalt and titanium phthalocyanines…”