Spectroelectrochemistry of [(bpy)2Ru(tatpp)]Cl2, a Photocatalyst for Hydrogen Generation

Autor:	R.O. Lezna, Frederick M. MacDonnell, Norma R. de Tacconi
Rok vydání:	2008
Předmět:	Chemistry Photocatalysis Photochemistry Hydrogen production
Zdroj:	ECS Transactions. 11:37-43
ISSN:	1938-6737 1938-5862
Popis:	The mononuclear ruthenium(II) complex [(bpy)2Ru(tatpp)]2+ (with bpy = bypyridine, tatpp = 9,11,20,22-tetraaza tetrapyrido[3,2-a:2'3'-c:3",2"-l:2"',3"']-pentacene) is photoactive and capable of proton-coupled electron transfer reactions. Electrochemical characterization in acetonitrile and aqueous media indicates that four electrons are accepted by the tatpp ligand of this complex. A rich array of electroreduced and protonated products was determined by UV-visible transmittance and reflectance spectroelectrochemistry. The multiple-electron uptake capability and appropriate energy levels in this complex is shared by its analog, the dinuclear [(bpy)2Ru(tatpp)(bpy)2]4+ complex, and therefore both are considered potential photocatalysts for hydrogen generation. Their photocatalytic lifetime was found significantly longer than the standard [Ru(bpy)3]2+ photocatalyst.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b16c752cab0389227f0077369c74462e https://doi.org/10.1149/1.2910231 Zobrazit plný text záznamu