大环化合物合成中金属的模板效应

经非模板和模板反应合成了一系列二苯并四氮杂￣［１４］轮烯（Ｈ＿２ＴＡＡ，ｌａ；ＨＨ＿２ＤＮＴＡＡ，２ａ和Ｈ＿２ＴＭＴＡＡ，３ａ）及其对应的二价金属络合物［ＴＡＡ·Ｍ，Ｍ＝Ｃｏ（Ⅱ），ｌｃ；Ｎｉ（Ⅱ），ｌｄ；Ｃｕ（Ⅱ），ｌｄ和ＴＡＡ·Ｍ，Ｍ＝Ｎｉ（Ⅱ），３ｂ，Ｃｕ（Ⅱ），３ｃ〕，结果表明：借助于使用金属离子即金属离子的模板效应提高了环状产物得率，讨论了反应中间体的种类和金属离子半径大小对模板反应的影响作用。     

Schiff Base型大环化合物的合成研究进展

研究发现Schiff base型大环化合物具有优异的抗菌和过渡金属离子的萃取性能,已经成为有机化学的研究热点之一。综述了Schiff base型大环化合物的合成方法研究进展,并对合成中的一些诸如模板离子的大小与缩合比,脱模板作用等问题作了简要探讨。     

分子内的光诱导电子转移反应在中到大环化合物合成中的应用进展

综述了利用分子内的光诱导电子转移反应合成中到大环化合物的进展.     

水溶性席夫碱型大环化合物的合成方法研究

报道以磺基水杨醛、1,3-二氯-2-丙醇为原料,采用超声波催化法合成中间体1,3-双(2'-甲酰-4'-磺酸钠)苯基-1,3二氧-2-丙醇(2),然后中间体(2)再与邻苯二胺反应得到了水溶性席夫碱型大环化合物(3).并对合成中间体1,3-双(2'-甲酰-4'-磺酸钠)苯基-1,3二氧-2-丙醇的超声波催化法与常规加热法...     

新型手性大环多胺化合物的合成及表征

以2,5-二甲基吡嗪为原料合成吡嗪-2,5-甲醛,再通过与1R,2R-环己二胺合成一种新型的手性大环多胺类化合物L,通过1H NMR、FT-IR对所合成的物质的结构进行了表征。     

开链大环类似物螯合剂的合成及应用

本文扼要介绍了开链大环类似物二酰代双PMP类新型螯合萃取剂的分子设计、合成和性能研究以及该类试剂中的部分成员在无机金属离子的分离、纯化和分析测试领域中应用研究的进展和动向。和当前公认的优良螯合萃取剂PMBP进行了比较,并对新试剂派生出的新异特性进行了讨论和评述。     

含羟基功能基的Schiff碱型大环化合物的合成与表征

以水杨醛、环氧氯丙烷为原料,设计合成了３个含羟基功能基的Ｓｃｈｉｆｆ碱型大环化合物,并用元素分析、ＩＲ、＾１ＨＮＭＲ、ＵＶ等对这３个新型大环化合物进行了表征。     

新型瓜环化合物的合成及应用

简要介绍了瓜环化学的产生、发展、应用及瓜环化合物的结构特征。详细综述了:新型瓜环化合物的制备研究;新型瓜环化合物在金属离子的萃取与分离方面的应用;新型瓜环聚合物的合成及在医药学和环境科学中的应用。并对瓜环化学的发展进行了展望。     

含醚链桥联的新型大环席夫碱化合物的合成与表征

以烷基二溴（即1,2-二溴乙烷,1,4-二溴丁烷,1,6-二溴己烷）、水杨醛、邻苯二胺为原料合成了系列醚链桥联大环席夫碱配体（H2L＊）及其Zn（Ⅱ）配合物,通过元素分析、1HNMR、红外光谱、紫外光谱、摩尔电导、质谱等手段对醚链桥联大环席夫碱配体及其配合物进行组成和结构表征。关键词大环化合物席夫碱合成表征     

新型瓜环化合物的合成及应用

简要介绍了瓜环化学的产生、发展、应用及瓜环化合物的结构特征。详细综述了:新型瓜环化合物的制备研究;新型瓜环化合物在金属离子的萃取与分离方面的应用;新型瓜环聚合物的合成及在医药学和环境科学中的应用。并对瓜环化学的发展进行了展望。     

一种新型的大环配体的合成和表征

以Ni^2 作模板,通过间苯二甲醛与二乙烯三胺进行1＋1成环缩合,得到了一种Ni^2 的大环配合物,经过还原,去模板以及质子化反应得到了3,6,9－三氮杂双环[9,3,1]-十五－1,11,13－三烯的氢溴酸盐,经元素分析,红外光谱,核磁共振谱和差热分析对其结构进行了表征,结果表明,该大环配体为含有结晶水和乙醇的晶体。     

Inward template synthesis of intact hollow spheres

A facile and general one-step approach is presented to synthesize hollow spheres with varied composition by an aerosol-assisted solvent evaporation process. The monomer of ethyl-2-cyanoacrylatemide contained in the aerosol droplets can form an outer shell by a fast polymerization around the droplets. Materials inside the droplets further grow inwardly against onto the interior surface of the first shell forming another shell forming composite hollow spheres. The hollow spheres are derived by dissolution of the outer shell, therefore the intact shell can be well preserved. Many approaches can be exploited forming the second shell for example sol-gel process of oligomers and phase separation from polymer solutions. Microstructure of the hollow spheres can be tuned from smooth to porous. The methodology is general.     

大环多胺与其它大环化学研究的新进展

介绍了新型大环多胺及其衍生物的结构特点、应用、络合物性能及对分子离子识别作用的新进展。重点综述了近年来各类新型大环多胺及其衍生物的合成、配合物的形成、对分子离子的识别、催化、选择性络合及新应用,展望了其广阔的应用前景。期望能在医药学、生命科学、材料科学、环境科学及能源科学的应用上更有意义。     

Mesoporous alumina obtained by combustion synthesis without template

Mesoporous alumina has been synthesised by the solution combustion synthesis method. While often the synthesis of mesoporous materials with a relatively narrow pore distribution requires the use of a template, this technique allows a simple and rapid synthesis of pure alumina without the use of any templating agent: by regulating the synthesis conditions is possible to obtain from relatively low surface area α-alumina to high surface mesoporous γ-alumina. The porosity of the latter was assessed chiefly by density functional method and was found to be in the range 2.8–3.5 nm. Low angle X-ray diffraction experiments demonstrated a partial ordering of the structure, with a periodicity in the range 5.5–6.9 nm. The addition of lanthanum to the alumina was tested and found to confer a good temperature resistance to the alumina, without modifying the mesoporous structure. After a prolonged heat treatment at 900 °C the mesoporosity of lanthanum-modified samples was retained, even if the pores size increased and the specific surface area decreased.     

含氮大环配体的合成与表征

以丙酮,乙二胺,溴乙酸乙酯为原料合成了两种新的含氮大环配体Ｌ和Ｎ,再将Ｌ水解制得相应的含氮大环羧酸Ｈ２Ｌ。     

模板自组装技术的研究进展

对分子自组装和模板自组装的原理和制备工艺进行了介绍,并对模板自组装方法进行分类。介绍了几种典型模板自组装法的最新进展、及其在材料领域的应用。     

Synthesis and characterization of macrocyclic polyamine derivative of chitosan

A novel macrocyclic polyamine derivative of chitosan was synthesized by a reaction between chitosan and epoxy‐activated macrocyclic polyamine. The copolymer that is obtained contains amino functional groups in its skeleton and secondary amine and more polar hydroxyl groups. Four types of analyses were used to characterize the chemical modifications of the chitosan: elemental, FTIR spectra, solid‐state ¹³C‐NMR, and X‐ray diffraction. The adsorption properties of the macrocyclic polyamine grafted chitosan for Ag⁺, Cu²⁺, Co²⁺, and Cr³⁺ were also investigated. The experimental results showed that the new macrocyclic polyamine derivative of chitosan has high adsorption capacity and good selectivity for Ag⁺ in the presence of Ag⁺, Co²⁺, and Cr³⁺. The selectivity coefficients were K = 6.16, K = 14.81, and K = 2.42, respectively. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 924–929, 2003     

Preparation and adsorption behavior of macrocyclic tetra‐amine derivatives of chitosan

The new macrocyclic polyamine derivatives of chitosan were synthesized by reacting epoxy‐activated macrocyclic tetra‐amine with the C6 hydroxyl or C2 amino group in chitosan. The obtained copolymers (CTS‐OM, CTS‐NM) contain amino functional groups, the secondary amines, and more polar hydroxyl groups in its skeleton. Elemental analysis, infrared spectra, and solid‐state ¹³C‐NMR analysis confirmed their structures. The adsorption behavior of the macrocyclic polyamine grafted chitosan for Ag⁺, Pb²⁺, Hg²⁺, and Cr³⁺ was investigated. The experimental results showed that the two novel derivatives of chitosan have high adsorption capacity and good selectivity for some metal ions. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 407–412, 2005     

酶在手性化合物合成中的应用

综述了以酶为催化剂，进行手生化合物合成研究的进展     

模板法制备纳米材料研究进展

模板法可以有效控制所合成纳米材料的形貌、结构和大小,因而成为目前制备纳米材料的一种重要手段。本文主要综述了软、硬模板法制备纳米材料的研究进展,重点介绍几种高分子聚合物为模板制备无机纳米材料的基本原理和主要特点,并在此基础上提出了模板法制备纳米材料需要解决的问题和应用前景。