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- W2073820037 abstract "The complex [Ru(II)(dcbpyH2)(bdmpp)NCS](PF6) (1) (where dcbpyH2 is 2,2′-bipyridine-4,4′-dicarboxylic acid, bdmpp is 2,6-bis(3,5-dimethyl-N-pyrazoyl)pyridine,) is synthesized and characterized extensively by 1H NMR and 13C NMR 1D and 2D, mass spectroscopy, cyclic voltammetry, electronic absorption spectroscopy and IR. The half-wave potential of the Ru(II)/Ru(III) redox couple was measured at E1/2=+0.795 V versus Ag/AgCl in CH3CN. The complex presents three intense metal-to-ligand charge transfer (MLCT) (dM→πL*) absorption bands centered at 383 (ε=21 300 M−1 cm−1), 432 (ε=22 400 M−1 cm−1) and 475 nm (ε=23 400 M−1 cm−1), respectively. The absorbance is extremely strong between 400 and 500 nm and even at 620 nm, the extinction coefficient is still high (ε=3768 M−1 cm−1). The strong π-acceptor property of the trans-isothiocyanate ligand compared with the Cl− ligand is probably the cause of the blue-shift observed in complex 1. These properties make the complex potentially promising for the photosensitization process. The incorporation of TiO2 photoelectrodes derivatized with this complex into a solar cell using a composite polymer/inorganic oxide solid-state electrolyte confirmed its sensitizing ability. Incident monochromatic photon-to-current conversion efficiency (IPCE) values of about 30% and overall energy conversion efficiency (η) of 1.7% were obtained." @default.
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- W2073820037 date "2002-12-01" @default.
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- W2073820037 title "Synthesis and spectroscopic properties of a new bipyridine-bipyrazoyl(pyridine)-thiocyanato-ruthenium(II) complex" @default.
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- W2073820037 doi "https://doi.org/10.1016/s0277-5387(02)01282-2" @default.
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