Synthesis and characterization of bdmpp-dcbpy-Ru(II) complex for dye-sensitized solar cells [where bdmpp is 2,6-bis(3,5-dimethyl-N-pyrazoyl)pyridine and dcbpy is 2,2 '-bipyridine-4,4 '-dicarboxylic acid]

摘要

A new complex, [Ru(II)(dcbpyH(2))(bdmpp)Cl](PF6) (where bdmpp is 2,6-bis(3,5-dimethyl-N-pyrazoyl)pyridine, dcbpyH(2) is 2,2'-bipyridine-4,4'-dicarboxylic acid) is synthesized and characterized by mass spectroscopy, by IR, ES-MS and H-1 NMR (1D and 2D) spectroscopies. The broad and very high intensity MLCT absorption band in the visible makes this dye potentially beneficial for the photosensitization process. Cyclic voltammetry analysis displays a well reversible oxidation-reduction wave with E-1/2 = +0.81 vs. Ag-AgCl. Transparent TiO2 thin film electrodes can easily be chemically modified by the complex and the incorporation of the resulting photoelectrodes in wet regenerative solar cells produced a stable photovoltage of 550 mV and gave a continuous photocurrent of 140 muA cm(-2). (C) 2002 Elsevier Science B.V. All rights reserved. [References: 11]