Synthesis And Luminescence Research Of Triphenylamine Derivatives And Rare Earth Ligand Complex

The coming of information times, the organic luminescence materials play more and more important roles in the fields of optical communication and flat panel display. In all of the luminescence materials, the intramolecule charge transfer organic molecules and rare earth ligand complex have shown great importance in organic photoluminescence, electroluminescence and optical communication respectively, and become to the new point of the luminescence materials research.In this paper, the luminescent theory of luminescence materials, the relationship between the molecule structure and luminescence, the new research evolution of the intramolecule charge transfer organic molecules and rare earth ligand complex are introduced briefly. To the problems met in the two kinds of materials, two chromophores with same charge donor and acceptor, but have different structures are designed and synthesized. In the meantime, lanthanide organic ligand complex made erbium and ytterbium as the central ions are synthesized.Two chromophores with "D-Ï€-A" structure 4-[2-(3-dicyanomethylene-5,5-dimethylcyclohex-l-enyl)-vinyl]triphenylamime(BHT) and "A-Ï€-D-Ï€-A" structure 4,4-Bis[2-(3-dicyanomethylene-5,5-dimethyl-cyclohex-l-enyl)vinyl]triphenylamime( BDHT) are synthesized. The Uv-vis and fluorescence spectra of them are tested in solvents, their solvatochromism are examed in different polar solvents. Through the UV-vis and fluorescence spectra, it could be.found that BDHT whose structure is symmetric has a better fluorescence than BHT whose structure is asymmetric. And with the increase of polarity of the solvents, the absorption and fluorescence band tend to move to the long wavelength. In the meanwhile, the MTES- and VTES-derived bulks doped with BHT and BDHT are prepared, examined optical properties of the bluk matrix materials with fluorescence spectra. As same as the phenomenons in the polar solvents, BDHT still has better fluorescence. And the VTES-derived bulk performances better than the MTES-derived one.Erbium and ytterbium are chose as the central ions, hexafluoroacetylacetonate(HFA)and triphenylphosphine oxide(TPPO) as the ligands, wishing to synthesize monometallic organic complexes or bimetallic organic complex of erbium and ytterbium, Ln(HFA)3(TPPO)2 (Ln=Er, Yb or Er\nYb\a)- And Uv-vis and fluorescence spectra are tested to compare the differences between the three complexes. In order to explain the obvious improvement in the fluorescence intensities between the monometallic and bimetallic organic complexes, the crystal structure and energy levels are described to analyzed the energy transfer process between the two rare earth ions.