Synthesis, electrochemical, and spectroelectrochemical properties of tetrakis(13,17-dioxa nonacosane-15-sulphanyl) phthalocyaninato zinc(II)

Tetrakis(13,17-dioxa nonacosane-15-sulphanyl) phthalocyaninato zinc(II), ZnPc(SCH(CH2OR)2)4, where R = C12H25, was synthesised and investigated electrochemically and spectroelectrochemically in dichloromethane. The well-defined UV-Vis spectra of the electro-reduced and electro-oxidised species of the complex obtained by applied potentials in a thin-layer cell provide a good evaluation of spectral changes. The former shows dimeric formation of the mono-cationic species, while the latter gives characteristic spectral changes corresponding to mono- and di-anionic species of zinc phthalocyanines.