Synthesis and characterization of partially crosslinked poly(N-vinylcarbazole-vinylalcohol) copolymers with polypyridyl Ru(II) luminophores: Potential materials for electroluminescence

A novel difunctionalized 5,5'-dibromomethylene-2,2' bipyridine ligand was p repared and covalently bound with concurrent crosslinking by a post-polymer modification method to (N-vinylcarbazole-vinylalcohol) copolymer. The elec trochemistry and W-vis spectroscopy results both confirm the covalent attac hment of ruthenhan transition metal complex to the polymer backbone. Differ ential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) indi cate high thermal stability of the copolymer. The copolymer is also highly phosphorescent making it a potential polymeric material for transition meta l based electroluminescent devices.