13798-24-8Relevant academic research and scientific papers
Homochiral porous lanthanide phosphonates with 1D triple-strand helical chains: Synthesis, photoluminescence, and adsorption properties
Yue, Qi,Yang, Jin,Li, Guang-Hua,Li, Guo-Dong,Chen, Jie-Sheng
, p. 4431 - 4439 (2006)
Four homochiral porous lanthanide phosphonates, [Ln(H2L) 3]·2H2O, (H3L = (S)-HO 3PCH2-NHC4H7-CO2H, Ln = Tb (1), Dy (2), Eu (3), Gd (4)), have been synthesized under hydrothermal conditions. These compounds are isostructural, and they possess a 3D supramolecular framework built up from 1D triple-strand helical chains. Each of the helical chain consists of phosphonate groups bridging adjacent Ln(III) ions. The helical chains are stacked through hydrogen bonds to form 1D tubular channels along the c axis. Moreover, helical water chains are located in the 1D channels, and after removal of these water chains, the compounds exhibit selective adsorption capacities for N2, H2O, and CH 3OH molecules. Compounds 1 and 3 show strong green and red fluorescent emissions, respectively, in the solid state at room temperature. Crystal data for 1: TbP3O17N3C 18H37, tetragonal (No.76), space group P41, a = 12.4643(3) A, b = 12.4643(3) A, c = 18.7577(5) A, V = 2914.17(13) A3, and Z = 4. For 2: DyP3O 17N3C18H37, a = 12.4486(3) A, b = 12.4486(3) A, c = 18.7626(5) A, V = 2907.60(13) A3, and Z = 4. For 3, EuP3O17N 3C18H37, a = 12.4799(3) A, b = 12.4799(3) A, c = 18.8239(5) A, V = 2931.78(13) A3, and Z = 4. For 4: GdP3O17N3C18H 37, a = 12.4877(18) A, b = 12.4877(18) A, c = 18.824(4) A, V = 2935.5(8) A3, and Z = 4.
Polyol-mediated synthesis and luminescence properties of CePO4:Tb3+ nanospindles
Li, Feng,Wang, Meng,Mi, Congcong,Yi, Kuiyu,Xu, Shukun
, p. L37-L39 (2009)
Tb3+-doped CePO4 nanospindles were synthesized via a polyol method and characterized by X-ray diffraction (XRD), transmission electron microcopy (TEM), as well as photoluminescence (PL) spectra. The results show that the as-prepared
Intercalation of lanthanide cations to a layer-like metal-organic framework for color tunable white light emission
Xu, Xiao-Yu,Yan, Bing
, p. 1178 - 1185 (2015)
One gallium carboxylate of MOF (Ga2(OH)4(C9O6H4) or MIL-124) has been synthesized by a facile solvothermal approach, and the luminescence was tuned by encapsulating lanthanide(iii)(Ln3+) cations into the channels through the active-COOH group in MIL-124 post-synthesis. PXRD, TEM, FTIR, and TGA were performed to determine the structure and thermal stability of the obtained products. The photophysical properties of these Ln3+ incorporated products are studied in detail, whose luminescent color can be tuned by controlling the composition of different Ln3+ cations in MOF. Furthermore, with careful adjustment of the excitation wavelength and concentration of the Ln3+ cations, the color of the luminescence can be modulated, and dichromatic (MIL-124@Eu3+) and trichromatic (MIL-124@Eu3+/Tb3+) white-light-emission can indeed be achieved. One of the optimized chromaticity coordinates in white-light-emission is (0.3693, 0.3362) which is very close to the value for ideal white-light (0.333, 0.333). The versatile luminescence, good thermal stability, and compatibility with aqueous conditions reveal that these materials based on MOF may have some potential applications in luminescent devices for display or lighting. This journal is
Synthesis, crystal structure and properties of two ternary rare earth complexes with aromatic acid and 1,10-phenanthroline
Zhao, Na,Wang, Shu-Ping,Ma, Rui-Xia,Gao, Zhi-Hua,Wang, Rui-Fen,Zhang, Jian-Jun
, p. 338 - 342 (2008)
Two dimeric rare-earth complexes [Eu(o-MOBA)3phen]2·2H2O (1), [Tb(o-MOBA)3phen]2·2H2O (2), (where o-MOBA = o-methoxybenzoate, phen = 1,10-phenanthroline) were synthesized and structurally c
Study of the luminescence properties of a novel rare earth complex Tb(DPC)22H2O
Lv, Yuguang,Li, Qiuping,Shi, Chunhui,Liu, Hairan,Liu, Fenghua,Wu, Lili,Wu, Dongmei,Liu, Hong,Xie, Jie
, p. 26 - 29 (2009)
Rare earth complex Tb(DPC)22H2O was synthesized by introducing Pyridine-2,6-dicarboxylic acid(H2DPC) as the ligand and characterized by UV, fluorescent and infrared spectra as well as elemental analysis. The complex exhibi
Preparation and thermal properties of lanthanide complexes with 2,3-dichlorobenzoic acid and 1,10-phenanthroline
Wang, Juan-Fen,Ren, Ning,Meng, Fan-Tao,Zhang, Jian-Jun
, p. 118 - 123 (2011)
Three lanthanide complexes with a general formula [Ln(2,3-DClBA) 3phen]2 (Ln(III) = Eu(1), Tb(2), Ho(3); 2,3-DClBA = 2,3-dichlorobenzoate; phen = 1,10-phenanthroline) were synthesized and characterized by elemental analysis, molar conductance, infrared and ultraviolet spectra and powder X-ray diffraction (XRD). The luminescent properties of the complexes 1 and 2 were studied. The thermal behaviors of the complexes were also discussed by thermogravimetric (TG), differential thermogravimetric (DTG) and infrared spectra (IR) techniques. The heat capacities of the complexes were measured from 259.15 to 493.02 K by means of Differential scanning calorimeter (DSC). The dependence of heat capacity on the reduce temperature x (x = [T - (Tmax + Tmin)/2]/[(Tmax - Tmin)/2]) was fitted to a polynomial equation with the least squares method for each complex. Furthermore, based on the fitted polynomial, the smoothed heat capacities and the derived thermodynamic functions (HT - H 298.15 K), (ST - S298.15 K) and (GT - G298.15 K) in the measured temperature range were obtained with an interval of 10 K.
Synthesis, crystal structure and luminescence properties of two novel lanthanide coordination polymers containing double chain
Song, Hui-Hua,Li, Ya-Juan
, p. 1421 - 1425 (2008)
Two novel lanthanide(III) two-dimensional (2D) coordination polymers [Ln2(PDC)2(OH)2(H2O)2] · H2O (Ln = Eu (1) and Tb (2), H2PDC = pyridine-3,4-dicarboxylic acid) have been prepa
Preparation and luminescence characteristics of the europium and terbium complexes incorporated into a silica matrix using a sol-gel method
Jin,Tsutsumi,Deguchi,Machida,Adachi
, p. [d]59-66 (1997)
A series of silica-based composite materials incorporating lanthanide bipyridyl (bpy) and phenanthroline (phen) complexes, SiO2:Ln(bpy)23+ and SiO2:Ln(phen)23+ (Ln = Eu, Tb), was prepared by the sol-gel method with luminescence properties studied before and after heat treatment up to 873 K. For the SiO2:Ln(bpy)23+ and SiO2:Ln(phen)23+ composites heated at appropriate temperatures, the energy transfer from the bpy or phen ligands to Ln3+ ions took place smoothly, as for the original complexes, and consequently strong red or green emissions based on Eu3+ and Tb3+ ions were observed. Emission outputs from the lanthanide complexes incorporated into silica gel matrices were intensified by optimizing the concentration of complexes and heat treating at individual temperatures, and the maximum relative emission intensities (vs. Y(P,V)O4:Eu and LaPO4:Ce,Tb phosphors, as practically used) were ca. 15% and 45% for SiO2:Eu(phen)23+ and SiO2:Tb(bpy)23+ composite materials. Furthermore, thermal stability of Ln(bpy)23+ complexes was effectively improved compared with the original lanthanide complexes by incorporation into an SiO2 matrix.
Luminescence enhancement of Tb3+ ion in assemblies of amphiphilic linear-dendritic block copolymers: Antenna and microenvironment effects
Zhu, Linyong,Tong, Xiaofeng,Li, Miaozhen,Wang, Erjian
, p. 2461 - 2464 (2001)
The luminescence enhancement of Tb3+ ion bound to amphiphilic linear-dendritic block copolymers [poly-(acrylic acid)-dendritic polyether, PAA-Dendr.PE] was investigated. Tb3+ ion complexes with a PAA chain of block copolymer to form a supramolecular luminophore. The observed prominent enhancement in luminescence properties can be attributed to two important factors. The antenna effect, energy harvest and transfer from the dendritic polyether subunit to the ground state of the Tb3+ ion, leads to a remarkable increase of luminescence intensity of Tb3+ ion, which enlarges obviously with increasing generation of dendrimer. Furthermore, the unique microenvironment surrounding the Tb3+ ion that derives from multimolecular assembly of copolymer results in a large decrease of the number of water molecules coordinated to Tb3+ from 3.5 to 1.3, which is the other factor to greatly enhance the luminescence intensity of Tb3+ ion.
Luminescent triazine-containing bridged polysilsesquioxanes activated by lanthanide ions
Lin, Nana,Li, Huanrong,Wang, Yige,Feng, Yu,Qin, Dashan,Gan, Quanying,Chen, Shudong
, p. 4781 - 4785 (2008)
Luminescent lanthanide-complex-bridged polysilsesquioxanes were prepared by sol-gel processing of a monomer with a large heterocyclic bridging group in the presence of lanthanide ions under acidic conditions. SEM, XRD, FTIR, luminescence spectra and luminescence decay analysis were used to characterize the obtained materials. The 5D0 quantum efficiency and the number of the water molecules coordinated to the Eu3+ ion were theoretically estimated on the basis of emission spectra and the lifetime of the 5D0 state. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
