Inorganic Chemistry, Vol.44, No.4, 1031-1036, 2005
Silver(l) coordination polymers of fluorescent oligo(phenylenevinylene) with pi-pi stackings: Luminescence and conductivity
Three luminescent silver(I)-oligo(phenylenevinylene) complexes, [Ag-2(bmsb)(ClO4)(2)] (1), [Ag-2(bmsb)(H2O)(4)](BF4)(2) (2), and [Ag-2(bdb)(CF3SO3)(2)] (3) (bmsb = 1, 4-bis(methylstyryl)benzene, bdb = 4,4'-bis(2, 5-dimethylstryryl)biphenyl), have been synthesized and structurally characterized. Complexes 1 and 2 are 2D networks with unique metallocyclophane motifs. Complex 3 affords a 2D zigzag sheet, in which silver triflates form tubelike double chains and bdb molecules act as linkages. Complex 2 exhibits high electric conductivity because of columnar aromatic stackings formed through intra- and intermolecular pi-pi interactions. Complexes 1-3 in the solid state exhibit luminescence, of which excitation and emission maxima are shifted to longer wavelength as compared to those of the corresponding metal-free ligands.