Preparation and luminescence properties of CaMoO :Eu /Sm phosphors.

Eu and/or Sm -doped CaMoO phosphors were prepared using a hydrothermal method. The X-ray diffraction (XRD) results show that the sample is in a tetragonal CaMoO phase, the space group is I41/a (88), the lattice constants are a = b = 5.226 Å, c = 11.

Preparation and luminescence properties of ZnWO :Eu ,Tb phosphors.

A series of ZnWO :Eu ,Tb phosphors was prepared using a co-precipitation method at room temperature. The structures and luminescence properties of the materials were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and UV-vis light, differential thermal analysis-thermogravimetric analysis, fluorescence spectra and the calculated Commission Internationale de l'Éclairage (CIE) coordinates. The results showed that the material had a monoclinic structure and the P2/c group was determined using XRD.

[Preparation and luminescent properties of ZnMoO4: Tb3+].

Tb3+ doped ZnMoO4 materials were synthesized by combustion method. XRD results show that the samples completely formed single ZnMoO4 phase at 700 degrees C which belongs to Trigonal, while the incorporation of Tb3+ does not affect the basic structure of ZnMoO4. The TG-DTA results show that the samples fully formed ZnMoO4 phase due to the energy absorption at about 680 C.

[Preparation and luminescence properties of nanomaterials TiO2-SiO2 doped with Eu3+].

In the present paper, the samples of nanomaterials TiO2-SiO2:Eu3+ with different proportion of Ti/Si were prepared with the sol-gel method, and influence of the proportion of Ti/Si on the luminescence properties of samples have was studied. The structure of the samples was examined by FTIR, indicating that the compound TiO2 and SiO2 reacted, forming the new chemical bond of Ti-O-Si. The TEM of samples show that TiO2-SiO2:Eu3+ are sphericity nanoparticles with monodispersion and uniform size of 35 nm.

[Preparation and spectroscopy properties of Eu2 (CA)3 (phen)2 doped Eu3+/TiO2 nano-powders].

The 1% Eu3+ doped Eu3+ /TiO2 nano-powders were prepared via sol-gel method by using Eu(NO3)3 and Eu2 (CA)3 (phen)2 (CA: camphoric acid; phen: 1, 10-phenanthroline) as precursors respectively, and the samples were characterized by thermal analyses (TG-DTA), X-ray powder diffraction(XRD), scanning electron microscope(SEM), Fourier transform infrared spectroscopy (FTIR), UV-Vis absorption spectra and fluorescence spectra for their microstructure, morphology and spectroscopy properties. The results of TG-DTA and XRD indicate that the increasing trend of particle size and the conversion temperature of crystalline phase of the as prepared samples was restrained when using organic complexes Eu2(CA)3 (phen)2 as the do pant. The particle size was decreased from 9 to 7 nm, and the name powders were still anatase TiO2 when the calcination temperature was increased up to 500 degrees C.

[Preparation and luminescent properties of CaMoO4:Tb3+].

The precursor of the sample CaMoO4:Tb3+ was prepared by the coprecipitation method. TG-DTA spectra show that there is, at 850 degrees C, an energy absorption peak, suggesting that the sample reaches the activation spot of its response. The XRD pattern of the roasted sample shows that CaMoO4:Tb3+, in the single phase, is a representative scheelite structure of CaMoO4, but the peaks shift toward right, implying that tiny crystal defect in the crystal is produced.

[Preparation and luminescence properties of EuVO4].

The material of EuVO4 was prepared by solid state reaction, and the structure, crystal form and luminescence properties of the material were characterized by X ray diffraction spectrum, infrared spectrum analysis, excitation spectrum and emission spectrum, respectively. XRD was measured at different annealing temperature and the results indicate that V2O5 and Eu2O3 began to react around 600 degrees C, and the reaction almost finished at 700 degrees C with the component of product being EuVO4. The product is in tetragonal crystallographic structure, consistent with crystal EuVO4.

[Synthesis of CaLaAl3O7:Eu3+ by gel-combustion method and its luminescence properties].

Using the gel-combustion method the precursors of GaLa(1-x)Al3O7 : xEu3+ (0.05 < or = x < or = 0.8) were prepared.

[Preparation and luminescence properties of Tb3+ ion and Na2WO4 co-doped SiO2 materials].

Tb3+ and Na2 WO4 co-doped SiO2 materials were prepared by sol-gel method and the structure of materials were measured by DTA-TG, IR and XRD techniques. The results indicate that the materials were in amorphous phase andthe Si-O-Si bond was still observed in samples annealed at 800 degrees C. The influence of Na2 WO4 on luminescence properties of terbium glasses was investigated by three-dimension fluorescence spectra, excitation and emission spectra.

[The IR spectra of complexes of N-(phenyl, ferrocenyl)methyl-beta-hydroxyethylamine with Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II)].

The reaction of ferrocenylphenylcarbinol with the ethereal solution of boron trifluoride in dichloride methane resulted in the relevant ferrocenylphenylmethyl carbocation. Without separation from the reaction mixture, the ion reacted with ethanolamine to from N-(phenyl,ferrocenyl) methyl-beta-hydroxyethylamine(FcY). A series of coordinate complexes-FcY-Ni(II), FcY-Cu (II), FcY-Zn(II), FcY-Cd(II) and FcY-Hg(II) were obtained through coordination of this ligand with MCl2 (M = Ni, Cu, Zn, Cd, Hg).

[Effects of different ligands on the fluorescence intensity of Tb(III)].

The excitation and emission spectra of seven Tb3+ complexes were measured and investigated, especially by comparing their fluorescence intensities. The effect of different ligands on the fluorescence intensity of Tb3+ was analyzed in terms of ligand structure, energy transfer and energies matching. The result indicates that ligands do not influence the positions of characteristic emission peaks of Tb3+, but the emission intensity.

[The IR spectra of complexes of 2-hydroxy-2-ferrocenylpropylamine with Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II)].

alpha-Cyano-alpha-ferrocenylethoxytrimethylsilame was prepared by the addition of trimethysilyl cyanide to acetylferrocene. 2-Hydroxy-2-ferrocenylpropylamine(FcA) was synthesized by the reduction of alpha-cyano-alpha-ferrocenylethoxytrimethylsilame with lithium aluminum hydride. A series of coordinate complexes--FcA-Ni(II), FcA-Cu(II), FcA-Zn(II), FcA-Cd(II) and FcA-Hg(II) were obtained through coordination of this ligand with MCl2 (M= Ni, Cu, Zn, Cd and Hg).

[Structure and luminescence properties of Eu3+ complexes with benzoic acid and 1,10-phenanthroline incorporated in SiO2, SiO2-B2O3 and SiO2-B2O3-Na2O matrices].

Eu3+ Complexes with benzoic acid and 1,10-phenanthroline incorporated in SiO2, SiO2-B2O3 and SiO2-B2O3-Na2O matrices were prepared via the sol-gel method. Eu-doped SiO2, SiO2-B2O3 and SiO2-B2O3-Na2O luminescence materials were synthesized. The luminescence of Eu3+ was studied with excitation spectra and emission spectra.

[Synthesis, characterization and fluorescence properties of binary and ternary rare earth complexes with N-phenylanthranilic acid and 1, 10-phenanthroline].

Some novel binary and ternary complexes of rare earth (Tb) with N-phenylanthranilic acid and 1,10-phenanthroline were synthesized and their compositions were characterized by elemental analysis. The compositions of the complexes have been confirmed to be TbL3. 4H2O and TbL3 phen.

[Study on the transition of green, yellow fluorescence of ternary complexes of Tb-benzoic acid-1,10-phenanthroline].

In this paper, ternary solid complexes of Tb-benzioc acid-1,10-phenanthroline have been synthesized. Compared with binary complexes of Tb-benzioc acid, their properties were investigated. The results showed that the second ligand-phenanthroline enhanced the fluorescence intensities of Tb3+, and shortened its fluorescence lifetime, and it was found that the aggregative state influenced the luminescence properties of ternary complexes.

[Synthesis and luminescence properties of europium (III ) complexes with camphoric acid and 1,10-phenanthroline].

The complexes of europium(II) with camphoric acid and 1,10-phenanthroline have been synthesized and characterized by elemental analysis, (1)H NMR, IR and FT-Raman. The compositions of the complexes have been confirmed to be Eu2 (CA)3.(2)H2O and Eu2 (CA)3 (phen)2 (CA: camphoric acid, phen: 1, 10-phenanthroline).

[Preparation and spectroscopic properties of terbium polypropenic acid film].

The bonding-type rare earth polymers-polypropenic-acid terbium film was prepared through the bonding way. Three-dimension fluorescence spectra showed that the optimum excitation wavelength was 306 nm, the strongest emission wavelength was 544 nm. The terbium polypropenic-acid film showed the characteristic Tb3+ emission when excited at 306 nm due to 5D4-7FJ transition (J = 6, 5, 4 and 3).