Abstract
A novel cobaltphthalocyaninanine compound was deposited as a thin film on an indium/tin oxide-coated (ITO) glass electrode by electrodeposition from a solution of 2,9,16,23-tetracarboxyphthalocyaninatocobalto(II) [Co(II)-taPc] and CaCl2 in DMF. Electrochromic properties of the thin film were investigated. Formation of a calcium chelate complex between Co(II)-taPc and Ca2+ and deposition as a thin film on the electrode was confirmed by IR and XMA measurements. Cyclic voltammogram and electron absorption spectra were carried out. Electrochemical reduction and oxidation of CoPc thin films showed a rapid, virtually quantitative reversible process in electrochromism (blue-green-brown). No change in voltammogram was observed after >10,000 cycles.
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