Electrochromism in the transition-metal phthalocyanines. Part 3.—Molecular organisation, reorganisation and assembly under the influence of an applied electric field. Response of [Fe(pc)] and [Fe(pc)Cl]
作者： Jack Silver , Peter Lukes , Andrew Houlton , Stuart Howe , Paul Hey
DOI: 10.1039/JM9920200849
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摘要: The electrochromic behaviour of α-[Fe(pc)] and [Fe(pc)Cl] has been studied, using cyclic voltammetry, electronic absorption spectroscopy Mossbauer spectroscopy, the latter on 57Fe-enriched [Fe(pc)] films. films have shown to cycle reversibly ca. 103 times between neutral (blue) reduced (purple-red) states (negative voltages), but decompose when oxidised repeatedly (positive voltages) in aqueous KCI electrolytes. When then < 1 s is formed. This indicates that Cl– ion adds as a ligand during oxidation this takes place concomitantly with lattice reorganisation. produce red [FeIII(pc˙)Cl2] contain (pc˙) phthalocyanine radical anion. On reduction they become [Fe(pc)Cl].[Fe(PC)Cl] reduce electrochromically from an initial green film purple without first becoming [Fe(pc)]. However, reoxidation neutral, blue formed; behaves like normal film. These studies show axial Cl–on [Fe(pc)Cl], once removed, passes out reduction, under influence field reorganises, assembling predominantly phase.This attempt explain widespread reorganisation involves metallophthalocyanines ligands attaching detaching controlled voltage.
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