INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
congresos y reuniones científicas
Cyanide-bridged Ru(bpy) antenna compounds: from ultrafast dynamics to solar cells
CADRANEL, ALEJANDRO; ARAMBURU TROSELJ, BRUNO M.; BARALDO, LUIS
Conferencia; 21st IAPS Conference; 2011
Inter-American Photochemical Society
Since pioneering work by Bignozzi and Grätzel in the late 80s, sensitization of TiO2 with ruthenium polypiridines has been largely studied. However, although light‐to‐energy conversion has reached a maximum efficiency of only 11,6%, cyanide‐bridged polymers have not been exhaustively explored. Synthetic difficulties and potential creation of new vibrational deactivation pathways may have decreased the interest in developing polynuclear systems. We present two series of cyanide‐bridged antenna compounds, based on [Ru(tpy)(bpy)] and [Ru(tpm)(bpy)] moieties (tpy=2,2';6',2"‐terpyridine, bpy=2,2‐bipyridine, tpm=tris(1‐pirazolyl)methane). Understanding their ultrafast excited state dynamics is of crucial importance to rationally design complexes of higher nuclearity that bear more than one Ru(bpy) chromophoric unit. Moreover, a new anchoring ligand is tested in dye‐sensitized solar cells to evaluate its incorporation into the polynuclear compounds.