Synthesis and Properties of two CuI Complexes Involving Tetrathiafulvalene-Fused Phenanthroline Ligand

摘要

Two Cu I complexes based on the π-conjugated tetrathiafulvalene-annulated phenanthroline ligands (TTF-Phen, L 1 and L 2 ), [Cu I (Xantphos)( L 1 )]BF 4 ( 1 , Xantphos = 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene) and [Cu I (Binap)( L 2 )]BF 4 ( 2 , Binap = 2,2’-bis(diphenylphosphino)-1,1’-binaphthyl), have been synthesized. They have been fully characterized, and their photophysical and electrochemical properties are reported together with those of L 1 and L 2 for comparison. Both Cu I complexes show metal-to-ligand charge transfer (MLCT) absorption bands, whereas the 3 MLCT luminescence is strongly quenched.