Enhanced luminescence of novel rare earth complexes Eu(3,5-DNBA)3Phen in nano-TiO2.

Eu3+ (or Tb3+) of 3,5-dinitrobenzoic acid and 1,10-phenanthroline ternary rare earth complexes were synthesized and characterized by thermal analysis, infrared spectroscopy, elemental analysis and fluorescence spectroscopy. In this study an organic–inorganic combined device indium tin oxide/poly(N-vinylcar-bazole):RE(3,5-DNBA)3Phen:TiO2/Al was fabricated. The nano-TiO2 has been used in the luminescence layer to change the electroluminescence property of RE(3,5-DNBA)3 Phen (RE=Eu3+or Tb3+).