Title of article :
The electronic structure of the cis-bis(4,4′-dicarboxy-2,2′-bipyridine)-bis(isothiocyanato)ruthenium(II) complex and its ligand 2,2′-bipyridyl-4,4′-dicarboxylic acid studied with electron spectroscopy
Author/Authors :
H. Rensmo، نويسنده , , H. and Sِdergren، نويسنده , , S. and Patthey، نويسنده , , L. and Westermark، نويسنده , , K. and Vayssieres، نويسنده , , L. and Kohle، نويسنده , , O. and Brühwiler، نويسنده , , P.A. and Hagfeldt، نويسنده , , A. and Siegbahn، نويسنده , , H.، نويسنده ,
Abstract :
The electronic structure of the dye complex cis-bis(4,4′-dicarboxy-2,2′-bipyridine)-bis(isothiocyanato)ruthenium(II) as well as that of its ligand 2,2′-bipyridine-4,4′-dicarboxylic acid has been investigated with electron spectroscopy. Valence level spectra have been studied with respect to photoelectron angular distributions and photon energy dependence. The experimental information coupled with semi-empirical INDO/S calculations provides a mapping of the orbital parentage of the dye complex and its ligands. The energy levels of the dye complex in the context of a sensitized semiconductor (nanostructured titanium dioxide) surface are related to the bands of the semiconductor.
