Design of antenna-sensitizer polynuclear complexes. Sensitization of titanium dioxide with [Ru(bpy)2(CN)2]2Ru(bpy(COO)2)22

Autor:	R. Amadelli, Roberto Argazzi, Franco Scandola, Carlo Alberto Bignozzi
Rok vydání:	1990
Předmět:	Chemistry business.industry Photoelectrochemistry General Chemistry Photoelectrochemical cell Biochemistry Catalysis Spectral line Electrochemical cell chemistry.chemical_compound Crystallography Colloid and Surface Chemistry Semiconductor Titanium dioxide Electrode Emission spectrum business
Zdroj:	Journal of the American Chemical Society. 112:7099-7103
ISSN:	1520-5126 0002-7863
DOI:	10.1021/ja00176a003
Popis:	The use of antenna-sensitizer molecular devices is proposed as a possible strategy to increase the light harvesting efficiency of sensitized semiconductors. To illustrate this approach, the cyano-bridged trinuclear complex (Ru(bpy){sub 2}(CN){sub 2}){sub 2}Ru(bpy(COO){sub 2}){sub 2}{sup 2{minus}} has been synthesized and studied. The complex adsorbs on TiO{sub 2} via the negativity charged-Ru(bpy(COO){sub 2}){sub 2}-central unit. The photophysical behavior in solution and the photoelectrochemical behavior on TiO{sub 2} have been studied. Emission and excitation spectra show that in this complex the light energy absorbed by the terminal Ru(bpy){sub 2}(CN){sub 2} (antenna) groups is efficiently funneled to the central-Ru(bpy(COO){sub 2}){sub 2}-(sensitizer) fragment. Photochemical spectra on TiO{sub 2} demonstrate that the light absorbed by the antenna fragments is efficiently used for sensitization of the semiconductor.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1de44d361f62cc49a0b86ffeb304b226 https://doi.org/10.1021/ja00176a003 Zobrazit plný text záznamu