一维链状银配位聚合物[Ag(2,3-L)(NO_3)(pph_3)]_n的合成、结构与荧光性能

合成了一种一维链状银配位聚合物[Ag(2,3-L)(NO3)(pph3)]n{2,3-L=N-[(2-吡啶基)甲基]-3-吡啶胺,pph3=三苯基膦},并且对其进行了元素分析、红外、热重、荧光、粉末及单晶X射线衍射等表征。标题化合物属于正交晶系,Pbca空间群,a=1.72479(5)nm,b=1.45923(4)nm,c=2.11904(6)nm,V=5.3333(2)nm3,Z=8,R=0.0336。每个Ag(I)离子分别与两个2,3-L配体中的两个氮原子,硝酸根中的一个氧原子和pph3中的一个磷原子配位,构筑了四配位扭曲的四面体构型,由于配体的桥联作用使得标题配合物沿b方向形成了一维链状结构,同时该配合物在室温下于372nm处表现出较强的荧光发射。     

配位聚合物的研究进展

综述了近年来比较热门的研究领域——配位聚合物,它是由过渡金属和有机配体自组装而形成的,具有独特的空间几何构型,在非线性光学材料、磁性材料、超导材料,微孔材料及非对称催化等诸多方面都有广阔的应用前景。本文就不同配体的配位聚合物进行了分类研究。     

纳米多孔配位聚合物的研究进展

纳米多孔材料可用作催化剂、气体储存材料和光电子器件,是目前新型多孔材料的研究热点之一.借助自组装技术,选择羧酸类、联吡啶类和吡啶羧酸类化合物作为桥联配体,可获得一维、二维和三维的多孔配位聚合物.简要综述了该类纳米多孔配位聚合物的设计原理、合成路线和应用前景,评价了其合成方法的优缺点.由于其特殊的结构和性质,纳米多孔配位聚合物将发展成为具有光、电、磁等性质的多功能材料.     

浅析配位聚合物配位模式的调控方法

讨论了影响配合物结构的一些因素;金属离子和配体等。也研究了配位聚合物的反应条件。     

基于含铜簇配位聚合物的制备及晶体结构

通过席夫碱配体2-羟基-3-甲氧基-苯甲醛缩烟酰肼(IAH)和碘化亚铜在溶剂热条件下得到新型的铜(I)配位聚合物[(Cu2I2)L]n。通过元素分析、红外光谱和热重分析等方法对该配合物进行了表征,并测定了它的单晶结构。配合物属三斜晶系,空间群P-1,a=7.998 8(8)?,b=12.642 3(12)?,c=17.919 7(17)?,α=89.528(2)°,β=89.528(2)°,γ=73.688 0(10)°,V=1 738.9(3)?~3,Z=2。     

基于多齿羧酸配体的Zn配位聚合物的合成及晶体结构

选用2-(3,5-二羧基苯基)-6-羧基苯并咪唑（H2cpcbi）作为配体,在溶剂热的反应条件下与锌盐反应,成功制备出了一种新的锌配位聚合物[Zn(cpcbi)]n(1)。采用X射线单晶衍射、X射线粉末衍射、热重分析和红外分析对产物的结构进行分析。结果表明：该化合物结晶于单斜晶系,p21/n空间群,具有二维层状结构。     

手性和螺旋型配位聚合物的研究进展

手性和螺旋型配位聚合物是一种新型功能性分子材料,作者对手性和螺旋型配位聚合物的分类和合成方法进行了综述,列举了近年来这类配位聚合物的研究成果和开发进展,并对其发展趋势进行了展望.     

一维链状磺酸银配合物[Ag_2(2-Pyr)(H_2O)_4]L_2的合成与晶体结构

由Ag2CO3、2,5-二氯-4-氨基苯磺酸(HL)和2-甲基吡嗪(2-Pyr)反应,得了一种新型磺酸银配合物[Ag2(2-Pyr)(H2O)4]L2(1),通过元素分析、红外光谱和X-单晶衍射等对配合物的结构进行了表征。结果表明:1属单斜晶系,空间群P21/c,晶胞参数a=0.92748(19),b=0.77156(15),c=2.0044(4)nm,β=91.34(3)°,V=1.4340(5)nm3,Z=2,F(000)=850,Dc=1.999g/cm3,R1=0.0867,wR2=0.1717[I>2σ(I)]。配合物中银离子被2-Pyr配体和配位水分子连接成一维的链状结构,进一步通过分子间氢键作用扩展为三维的超分子结构。并且得出了第二配体(2-Pyr)的存在使磺酸银化合物的结构发生了根本的改变。     

Supramolecular Design of Coordination Polymers Based on Silver(I) Azide and Nitrogen Donor Ligands

The reactions of K₃[Cu(CN)₄], Me₃SnCl and methylpyrazine (Me-pyz) or tetramethylpyrazine (Me₄-pyz) in water/dioxane system afforded two new coordination polymers (CP); [{Cu(μ-CN)}₂(μ-Me₄-pyz)·dioxane] _n , 1, and [Cu{μ-Mepyz}{μ-CNSn(Me₃)NC–}], 2. X-ray single crystal analysis shows that 1 contains two crystallographically different copper(I) ions which acquire trigonal planar geometry. The structure of 1 contains non-linear (CuCN)_∞ chains that are interconnected by the Me₄-pyz ligands forming 3D-network structure. The structure of 1 has two-fold interpenetrating 3D-networks with dioxane molecules encapsulated in the voids of the structure. The structures of these CP were also investigated by FTIR and mass spectroscopy, thermal analysis and compared with the prototype compounds. Spectroscopic analyses of 2 confirm the presence of all components (Me₃Sn⁺, Cu(CN)₂ ⁻ and Me-pyz) and support the composition predicted by elemental analysis. 1 and 2 display strong fluorescence in the solid state at room temperature.     

稀土配位聚合物荧光材料的应用研究进展

稀土配位聚合物因其结构多样性、可调控性以及在荧光、磁性、气体吸附与分离和荧光探针等领域的潜在应用成为当前的研究热点。文章详细地综述了近年来稀土配位聚合物荧光材料在温度传感、白光发射和荧光传感等领域的应用研究进展。最后,对稀土配位聚合物荧光材料的应用前景进行了总结和展望。     

Structural Influence of the Ligand Geometry on Construction of Coordination Polymers Formed from Silver(I) Chloride Ribbons and Bipodal Nitrogen Donor Ligands

An assembly of adducts of silver nitrate and KCl and bipodal nitrogen donor ligands, 4,4′-bipyridine (bpy), trans-1,2-bis(4-pyridyl)ethylene (tbpe) or 1,2-bis(4-pyridyl)ethane (bpe), at room temperature affords new supramolecular coordination polymers (SCP), [AgCl·bpy] (1), [(AgCl)₂·tbpe] (2) and [(AgCl)₃·(bpe)₂] (3). X-ray single crystal analyses reveal that 1–3 have 3D-supramolecular networks composed of different types of infinite 1D-ribbons of ladder, 1, and staircase, 2 and 3, structures formed from fused minicyle {Ag₂(μ₃-Cl)₂} motifs, which are bridged by the nitrogen donor ligands to form 2D-layers. The 2D-layers are interconnected by extensive hydrogen bonds and π–π stacking thereby creating 3D-networks. The products are also characterized by IR and electronic absorption spectra. SCP 1–3 display strong fluorescence in the solid state at room temperature.     

银催化剂研究进展(下)

综述了银催化剂的发展历史、催化作用机理、制备方法、助催化剂、载体研究进展，并对用于乙烯环氧化反应的银催化剂在不同时期的发展状况、宏观及微观催化作用机理、从原料到催化剂成品的制备过程、数十种金属及非金属助催化剂的助催作用、载体结构及添加组分的改进等方面的最新研究成果作了阐述。     

Four New Ag(I) Coordination Polymers: Synthesis, Crystal Structures and Thermal Stability

Four silver(I) coordination polymers of composition [Ag₆(bptp)₃(OOCCF₂CF₂COO)₃]_∞ (1), [Ag₅(bptp)₂(CF₃SO₃)₅(CH₃COCH₃)₂]_∞ (2), [Ag(bmtm)(C₁₀H₇SO₃)]_∞ (3), and [Ag₁₀(bpte)₄(NO₃)₁₀]_∞ (4) (bmtm = bis(methylthio)methane, bpte = 1,2-bis(phenylthio)ethane, bptp = 1,3-bis(phenylthio)propane) have been synthesized and structurally characterized. The 2D-coordination networks of both 1 and 2 consist of two meshed networks, (Ag-anion)_∞ and (Ag-ligand)_∞, which share their silver atoms. The 1D-coordination polymers of 3 are associated through weak van der Waals interactions into 2D network while polymer 4 forms a tubular structure. Relatively short Ag···Ag interactions are found in both 1 and 3. The stoichiometries of the obtained polymers were found to be independent of the starting materials metal-to-ligand ratio except for coordination polymer 4. Thermogravimetric analyses of 1 and 2 revealed that they decompose in a single step to metallic silver while 3 and 4 showed a two-step weight loss.     

超分子聚合物的研究进展

本文从主客体之间结合方式的角度总结了超分子聚合物的种类及其制备,包括基于氢键结合、基于π-π结合、基于双亲性分子自组装以及基于配位键,静电作用的超分子聚合物等类型,并对超分子聚合物的研究进展进行了展望。     

抗菌性高分子材料的研究进展

简要介绍了各类抗菌剂的抗菌机理,并从高分子基材与抗菌剂共混、表面改性和分子组装抗菌化技术三方面综述了近5年来国内外抗菌高分子材料的研究进展。