Electrochromic, electrochromism inert

The related dinuclear terpyridine complexes were investigated [71]. The Ru(II) and Fe(ll) complexes, in their open forms, were found to be inert to UV irradiation but could be cyclized electrochemically as revealed by a cyclic voltammetry study. In contrast, the bis-Co(II) complex underwent efficient photochemical but not electrochemical cycUzation. The corresponding Os(ll) complex was neither photochromic nor electrochromic. 

Experimental Methods for Studying Electrochromic Materials. Redox systems which are likely to show promise as electrochromic materials are first studied, either as an electroactive surface film or an electroactive solute, at an electrochemically inert working electrode, under potentiostatic or galvanostatic control (2). Traditional electrochemical techniques (23), such as cyclic voltammetry (CV), coulometry, and chronoamperometry, all partnered by in situ spectroscopic measurements as appropriate (24,25), are employed for characterization. Three-electrode circuitry is generally employed, with coimter and reference electrodes completing the electrical circuit (2). 

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