Electrochromic Behaviour of Polynuclear Ruthenium Complexes on Nanocrystalline SnO2

Autor:	Matteo Biancardo, Peter F. H. Schwab, Carlo Alberto Bignozzi
Rok vydání:	2003
Předmět:	chemistry.chemical_classification Chemistry Inorganic chemistry chemistry.chemical_element General Chemistry Electrochromic devices Isonicotinic acid Electrochemistry Nanocrystalline material Ruthenium Crystallography Bipyridine chemistry.chemical_compound Dicarboxylic acid Electrochromism
Zdroj:	Collection of Czechoslovak Chemical Communications. 68:1710-1722
ISSN:	1212-6950 0010-0765
DOI:	10.1135/cccc20031710
Popis:	The trinuclear [{Ru(NH3)4(py-COOH)}(μ-CN){Ru(bpy)2}(μ-CN){Ru(NH3)4(py-COOH)}]6+ (py-COOH = isonicotinic acid, bpy = 2,2'-bipyridine) (1) and dinuclear [{Ru(dcb)2}2L]7- (dcb = 2,2'-bipyridine-4,4'-dicarboxylic acid, H3L = 9-phenyl-2,3,7-trihydroxy-6-fluorone) (2) complexes were prepared and their spectroelectrochemical behaviour characterised in solution and on conductive glass electrodes layered with Sb-doped nanocrystalline SnO2. The systems display a reversible redox response in a narrow potential range (-0.5 to +0.5 V vs SCE) and offer the possibility of controlling colour changes of electrochromic devices through variations of the coordinated and bridging ligands at the metal centres. SnO2(Sb) electrodes loaded with these dyes show switching times of the order of ms.
Databáze:	OpenAIRE
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