Synthesis and green luminescent properties of Cu(II), Zn(II) polymeric complexes containing triphenylamine as hole-transporting unit and 1,10-phenanthroline derivative as electron-transporting unit

Abstract

New polymeric metal complexes containing triphenylamine as hole-transporting unit and 1,10-phenanthroline derivative as electron-transporting unit, 4,4′-bis([1,10]phenanthroline-[5,6-d]imidazol-N-octyl-2-yl) triphenylamine with copper (II) and zinc (II), were prepared and characterized by FT-IR, elemental Analysis, conductivity measurement and gel permeation chromatography and UV–Vis. Gel permeation chromatography showed the number average molecular weights ( M n) of 6500 and the degree of polymerization ( n) of 7 for the polymeric complexes. Fluorescence spectra revealed that the polymeric complexes emit pure green luminescence at 548 nm and 547 nm in solid state and blue/green luminescence at 489 nm and 477 nm in DMSO solution, and the maximum wavelengths of the polymeric complexes are red shifted, compared with the ligand.