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A fully conjugated ligand 3,6-bis (8-hydroxyquinoline-5-propenyl)- N -butyl-carbazole (B8QPC) containing hole- and electron-transporting groups was firstly synthesized through the Wittig condensation polymerization. Corresponding polymeric complexes, B8QPC ( 1 ) with Cu(II) ( 2 ) and Zn(II) ( 3 ), were synthesized and characterized by FT-IR, elemental Analysis, conductivity measurement and gel permeation chromatography (GPC). GPC indicated that the number average molecular weights ( M n ) are about 3800 and the degree of polymerization ( n ) are about 5 for the polymeric complexes 2 and 3 . UV–vis and fluorescence spectra at room temperature revealed that both the polymeric complexes 2 and 3 emit blue luminescence at 473 and 513 nm ( λ em,max ) in DMSO solution and blue/green luminescence at 522 and 531 nm ( λ em,max ) in solid state, respectively. Thermal property measurements show that they have good thermal stability.

The polymeric metal complexes of 1,4-bis([1,10]phenanthroline-[5,6- d ]imidazol-2-yl)benzene (BPIB) with copper(II) and zinc(II) were synthesized and characterized by FT-IR, elemental analysis, conductivity measurements and gel permeation chromatography. The stoichiometry of the polymeric metal complexes was [(C 32 H 18 N 8 ) 7 (MCl 2 ) 8 ] (M = Cu(II), Zn(II)); BPIB forms a five-membered chelate ring. UV–vis and fluorescence spectra at room temperature revealed that the maximal emission of the complexes is red shifted as a result of coordination with the metal ions. Both complexes have good thermal stability and emit blue/green luminescence at 526 and 517 nm in the solid state and purple/blue luminescence at 423 and 434 nm in DMSO.

The polymeric complexes of 4,4′-bis[2-(2′-pyridyl)benzimidazolyl]biphenyl (Bmbp) with Co(II) (1), Ni(II) (2) and 1,3,5-tris[2-(2′-pyridyl)benzimidazolyl]benzene (Tmb) with Co(II) (3), Ni(II) (4) were successfully synthesized and characterized by using IR spectroscopy, elemental analysis, and gel permeation chromatography (GPC) analysis. Their cyclic voltametric behavior and thermal property were also studied. The results indicated these complexes display an irreversible redox process and have high thermal stability.