新型一维梯状双链配位聚合物{[Cu(malate)(2,2'-bipy)]•3H2O}∞的合成、晶体结构与表征

合成了铜(II)与羟基丁二酸和2,2'-联吡啶形成的配位聚合物{[Cu(malate)(2,2'-bipy)]•3H₂O}_∞ (其中malate＝羟基丁二酸根, 2,2'-bipy＝2,2'-联吡啶), 通过X射线衍射测定了单晶结构, 并进行了元素分析、红外光谱、紫外光谱、热分析等研究. 配合物属单斜晶系, 空间群P2(1)/c; 晶胞参数: a＝0.70132(10) nm, b＝1.9730(3) nm, c＝1.18998(16) nm, β＝94.551(3)°; Z＝2; 最终偏离因子R＝0.0483. 配合物中每个铜(II)原子与来自2,2'-联吡啶的两个氮原子和两个羟基丁二酸根的三个氧原子配位, 形成畸变的三角双锥结构单元. 每个羟基丁二酸根以R构型方式桥联两个三角双锥结构单元, 沿a轴方向无限延伸形成一维链. 两条平行链以面对面的方式重叠, 彼此吡啶环之间存在强的(-(相互作用, 加之C_吡啶环—H…O_羧基弱相互作用形成新颖的梯状双链结构, 比邻的梯状双链又通过分子间O_羟基-H…O_羧基氢键沿a轴方向共同构筑了具有隧道的三维结构.     

氰根桥连的异金属配位聚合物{[Ni(pn)2][Fe(CN)4(bipy)]}2·3H2O(pn=1,3-丙二胺,bipy=2,2′-联吡啶)的合成与结构

以[Fe(CN)₄(bipy)]^2-为建筑块和[Ni(pn)₂]²⁺在水溶液中反应,合成了{[Ni(pn)₂][Fe(CN)₄(bipy)]}₂·3H₂O(pn=1,3-丙二胺)。通过X-射线单晶衍射确定了其晶体结构。该配合物属单斜晶系,P2₁/n空间群,晶胞参数为:a     

导电性聚呋喃的氧化合成及应用

总结了芳香族聚呋喃的氧化聚合方法,系统论述了聚合过程中影响聚呋喃性质的各种因素,推测了聚呋喃的链结构,介绍了聚呋喃的各种改进方法和效果。指出聚呋喃及其共聚物是一种电导率在10-11到10-1S.cm-1范围内有机半导体材料,其电聚合沉积膜具有奇特的电活性、优良的热加工性和特殊的表面形貌,可望在金属离子和有机物质的吸附与富集、传感探测等领域发挥作用。     

球形木素基离子交换树脂的合成及其对Cr3+的吸附特性

以木素磺酸钙为原料,利用反相悬浮聚合技术在一种价廉无毒的介质相中制备出球状木质素基离子交换树脂,并讨论了它对Cr3 的吸附性能。结果表明,树脂对低浓度Cr3 的吸附效果好,前期吸附速度快,40min后吸附速率趋缓;升高温度能明显提高前期吸附速率,饱和吸附量约为60mgCr3 /g干树脂,而且树脂在较宽的弱酸性范围内表现出良好的吸附性能。     

热塑性/热固性聚合物共混体系研究——乙炔端基砜/聚砜共混物的动态固化动力学

The dynamic cure kinetics of thermosetting acetylene-terminated sulfone (ATS) and two blends prepared by the ATS and thermoplastic bisphenol A polysulfone (PSF), polyary-lethersulfone with cardo group (PES-C) were determinated by differential scanning calori-metry (DSC). The addition of polysulfone's resin increases the temperature of initial reaction and decreases the activation energy of cure reaction(E), pre-exponnential factor (LnA), and heat of cure reaction (AH). The temperature of reaction peak and final reaction and the reaction order(n) have been no effect.     

一种新型侧链液晶聚合物的喇曼光谱研究

The Raman scattering on a novel liquid crystal side chain polymer, poly-2,5-bis (p-meth-oxybenzoyloxy) styrene, has been performed. We observed that the characteristic Raman sp-ctra of the vinyl group in the monomer changed much deeply in the polymer, especially for the Raman line correponding to the C=C of the vinyl group which disappeared completly in the polymer. Contrast with that, the Raman spetra of the rest group did not present any substantial difference between the monomer and the polymer. These experimental facts show-ed that the vinyl group of the monomer was tranfered to the polymeric backbone while the chemical structure of the mesogenic unit in the monomer remained after the polymerization,and also conformed that it was successful in the synthesis of a liquid crystal side chain plymer without a flexible spacer between the mesomorphic unit and the molecular main chain.     

氟硼二吡咯类阳离子荧光探针的研究进展

荧光探针提供了方便、快捷、廉价的分析测试手段,并具有很高的灵敏度和选择性,因而在分析化学、临床生物化学、医学以及环境科学等领域有广泛的应用前景.氟硼二吡咯(BODIPY)是一种光物理和光化学性能优异的荧光染料,本文综述了近年来BODIPY类阳离子荧光探针的最新研究进展和发展趋势.     

THE SYNTHESIS AND CHARACTERIZATION OF SOME POROUS CROSS—LINKED POLY （VINYLACETOPHENONE） RESINS AND THEIR CAPACITIES IN ADSORBING GYPENOSIDES

In search of a suitable adsorbent used for the enrichment and separation of natural saponins from an aqueous solution,a series of porous cross-linked poly (vinylaceto-phenone) resins I-Ⅸ were synthesized via the Friedel-Crafts acylation of styrene-divinyl-benzene copolymer beads.Their carbonyl contents were characterized by infrared spectra and elemental analysis.Their physical properties such as bulk densities,skeleton densities,and specific surface areas were also determined.The tests for the resins adsorption of gypenosides showed that only those resins with high carbonyl contents and large specific surface areas could favorably adsorb gypenosides from an aqueous solution with much higher capacities.     

Synthesis and Crystal Structure of a Co（II） Coordination Polymer Derived from a Flexible Bipyridyl Derivative Ligand

1 INTRODUCTION The infinite networks constructed from transition metal complexes have attracted considerable current interest in recent years. The motivation behind this activity has been stimulated by their potential appli- cations in selective inclusion of ions, molecular re- cognition, host-guest chemistry, ion exchange, cata- lysis, electrical conductivity, magnetism, optics and so on[1～4]. It is well known that the diversity in structures and topologies of supramolecules is attri- b…     

一种新颖一维铅碘聚合物[(Pb_2I_5)(L-H~ )·2DMF]_n(L=Piperazine)的自组装合成和晶体结构(英文)

0IntroductionIncreasinginterestisfocusedonthestudyofmagnetic,electronicandoptoelectronicpropertiesoflow鄄dimensionalorganic鄄inorganichybridcompoun鄄ds[1~3].Studiesshowthatcomplexconsistingoforganicandinorganiccomponentshavegreatpotentialforthecreationoff…