新型超分子复合发光材料四足配体铕配合物-蒙脱土的插层组装及发光性质

通过离子交换反应将四足配体铕配合物[EuL(NO3)]2+[L=1,1,1’,1’-四(吡啶-2-羧酸酯基)联三甲基丙烷]插层组装到蒙脱土(MT)层板间, 制备出一种新型的超分子复合发光材料[EuL(NO3)]2+-MT. 用元素分析、XRD、FTIR、UV-Vis和热分析对材料进行了表征, 并对其荧光性质进行了研究. 结果表明, 复合材料保持了蒙脱土良好的层柱结构特征, 其层间距d(001)值与插层配离子的直径吻合得较好, 配离子以单层形式分布于蒙脱土层板间. 在紫外光激发下, 复合材料发出较强的Eu3+特征荧光, 其相对荧光强度、荧光单色性和荧光寿命大大优于相应配合物的乙醇溶液. 复合材料中配合物的发光性能、光稳定性和热稳定性较纯配合物有明显提高.     

多色发光层状稀土氢氧化物/聚甲基丙烯酸甲酯复合荧光薄膜的组装

本文通过水热法合成了含有3种不同稀土离子的层状稀土氢氧化物(Gd0.5Tb0.5-xEux)2(OH)5NO3.nH2O,并选择有机物水杨酸(HSA)作为敏化剂,通过在水热条件下的离子交换反应,成功将其以有机阴离子形式与层状稀土氢氧化物插层组装获得有机-无机杂化荧光材料(SA--LRHs∶xEu)。荧光性质测定表明,SA-通过有效的能量转移增强了Tb3+的特征绿色荧光发射,随着Eu3+含量的增加,Eu3+的特征红色荧光发射随之增强,而Tb3+的特征绿色荧光发射随之减弱。在此基础上,将发光颜色可调的有机-无机荧光材料与聚甲基丙烯酸甲酯(PMMA)复合组装出透明的荧光薄膜。     

酰胺型三足配体硝酸铽超分子配合物的晶体结构与荧光性质

通过硝酸铽与新型酰胺型三足配体L (2,2',2'-胺三乙酰苯胺)之间的反应得到配合物[TbL₂(H₂O)]• (NO₃)₃(H₂O)₂(CH₃OH), 并用X射线单晶衍射测定了配合物的晶体结构. 配合物为酰胺型三足配体稀土硝酸盐配合物中首例1∶2 (M∶L)型配合物. 配合物为单斜晶系, P21/c空间群, 晶胞参数a＝1.2870(7) nm, b＝1.6590(8) nm, c＝2.8723(12) nm, β＝115.364(2)°, V＝5.5415(5) nm³, Z＝4, R＝0.0399, wR＝0.0922, Tb^3＋为9 配位, 呈变形的三帽三角棱柱配位构型. 配合物分子单元通过分子间氢键作用将整个分子连接成三维网状超分子结构. 室温下, 在紫外光激发下配合物固体表现出Tb^3＋的特征荧光发射.     

三核镍配合物Ni3(C14H8N3O5)2(C5H5N)4的合成、晶体结构和抗癌活性

The title complex Ni₃(C₁₄H₈N₃O₅)₂(C₅H₅N)₄ has been synthesized by the reaction of 2-hydroxy-N′-(4-nitrobenzoyl)benzohydraizide with nickel acetate in pyridine solution. Its molecular structure was characterized by elemental analysis, IR spectra and X-ray crystal structure determination. Crystal data for this compound: Mono-clinic, space group P2₁/c, M_r=1 089.00, a=0.249 27(5) nm, b=0.161 40(3) nm, c=0.121 81(2) nm, β=94.59(3)°, V=4.885 2(17) nm³, Z=4, D_c=1.481 Mg·m^-3, F(000)=2 232, R₁=0.049 7, wR₂=0.106 8 (observed reflections with I>2σ(I)) and R₁=0.105 1, wR₂=0.119 4 (all reflections), GOF=1.021. The complex was evaluated for their antitumor activi-ties against two kinds of cell lines (K562 and BGC) by MTT method. A preliminary bioactivity study indicates that the complex shows distinct antitumor activity. CCDC: 627252.     

希土发光配合物研究──Ⅰ．希土与邻菲罗啉－N－氧化物及丙烯酸三元配合物的合成、表征和荧光性质

合成了邻菲罗啉－Ｎ－氧化物（Ｌ１）及丙烯酸（ＨＬ２）与部分希土的三元配合物［ＲＥ（Ｌ１）（Ｌ２）３］（ＲＥ＝Ｌａ－Ｎｄ，Ｓｍ－Ｔｂ）。通过元素分析、红外光谱、紫外光谱、摩尔电导、热分析对该系列配合物进行了表征。研究了Ｅｕ（Ⅲ）、Ｓｍ（Ⅲ）配合物的荧光性质，讨论了阴离子对Ｅｕ（Ⅲ）配合物荧光性质的影响。     

希土发光配合物研究──Ⅰ．希土与邻菲罗啉－N－氧化物及丙烯酸三元配合物的合成、表征和荧光性质

合成了邻菲罗啉－Ｎ－氧化物（Ｌ１）及丙烯酸（ＨＬ２）与部分希土的三元配合物［ＲＥ（Ｌ１）（Ｌ２）３］（ＲＥ＝Ｌａ－Ｎｄ．Ｓｍ－Ｔｂ）．通过元素分析、红外光谱、紫外光谱、摩尔电导、热分析对该系列配合物进行了表征．研究了Ｅｕ（Ⅲ）、Ｓｍ（Ⅲ）配合物的荧光性质，讨论了阴离子对Ｅｕ（Ⅲ）配合物荧光性质的影响．     

稀土高氯酸盐与1,10—二氮杂菲—1—氧化物的配合物研究

本研究合成出十三种稀土高氯酸盐与phenNO的配合物。元素分析确定配合物的组成为RE(phenNO)_4(ClO_4)_3·H_2O(RE=La、Pr、Nd,Sm～Lu)。对该系列配合物的红外光谱、紫外光谱、荧光光谱、热谱、摩尔电导等性质进行了研究。     

以冠醚为骨架的多足配体稀土配合物的合成、表征及荧光性质研究

A novel podand ligand using crown ether as skeleton and N-benzylsalicylamide as functional arms, 4,5-bi{2′-methylbenzeneaminoformyl)phenoxyl]methyl}-benzo-12-crown-4 (L), and its rare earth nitrate complexes have been synthesized. These complexes were characterized by elemental analysis, conductivity measurements and IR spectroscopy. Spectrographic analyses suggest that the complexes show a similar coordination mode. At the same time, the luminescent properties of the Eu(Ⅲ) and Tb(Ⅲ) complexes were also studied.     

新型超分子复合发光材料——联吡啶氮氧化物铕配合物-蒙脱土的室温固相插层组装及发光性能

Eu(Ⅲ) complexes with bipyO₂ ligand were intercalated into the interlayer spacing of montmorillonite (MMT) by solid-solid ion exchanging and coordination reaction of bipyO₂ with the Eu³⁺ ion existing in the interlayer spacing of Eu-MMT at room temperature, respectively. The obtained luminescent supramolecular composite materials, [Eu(bipyO₂)₄Cl₂]⁺-MMT and [Eu(bipyO₂)₄]³⁺-MMT were characterized by elemental analysis, XRD and FTIR spectroscopy. At the same time, the luminescent properties of the materials were also studied. The results show that the intercalation assembly materials have regular layered structures and good luminescent properties. They emit characteristic red emissions of Eu³⁺ strongly under ultraviolet light excitation. The relative luminescence intensities of the unit mass of Eu³⁺ of intercalation assemblies are much better than that of the corresponding pure Eu³⁺ complex possibly due to the rigid layered structures of the materials and the supramolecular interaction between the host layers and the guest complex ions.     

PhenNO－TTA－乳化剂OP荧光光度法测定微量铕

研究了Ｅｕ（Ⅲ）ＰｈｅｎＮＯ－ＴＴＡ－乳化剂ＯＰ体系的荧光性质及其用于微量铕的测定。该体系具有良好的分析特性，最低检测限可达７．０×１０－１４ｍｏｌ／Ｌ。