PHOTOELECTRIC CONVERSION ELEMENT COMPRISING BINUCLEAR RUTHENIUM COMPLEX DYE HAVING SUBSTITUTED BIPYRIDYL GROUP, AND PHOTOCHEMICAL CELL

摘要

The present invention relates to a binuclear ruthenium complex dye having a substituted bipyridyl group and represented by the general formula (1): wherein R1, R2, R3 and R4 each independently represents a linear or branched alkyl group having 1 to 30 carbon atoms, with the proviso that at least one of R1 and R2 represents a linear or branched alkyl group having 10 to 30 carbon atoms and at least one of R3 and R4 represents a linear or branched alkyl group having 10 to 30 carbon atoms; X represents a counter ion; n represents a number of the counter ions needed to neutralize a charge of the complex; and proton(s) (H+) of one or more carboxyl groups (—COOH) may dissociate.