β-环糊精包合物的结构研究

β 环糊精 (简称 β ＣＤ)是由 7个葡萄糖残基以α 1 ,4 糖苷键连接而成的环状化合物 ,具有亲水的外围及疏水的内腔 ,在溶液中可与多种有机物形成包合物[1,2 ].因 β ＣＤ对客体分子的形状、大小和极性等具有选择性[3],因而可能形成不同物质的量的比的结构模型包合物 .有关包合物制备及物质的量的比确定的文献报道很多[4 ,5 ],但研究包合物结构模型的文献却不多见 .本文用ＤＳＣ确定了 β ＣＤ与胆固醇、癸二酸和香兰素包合物的最佳物质的量的比 ,用ＸＲＤ分析包合物晶体的结构周期 ,得到较明显的 2倍于 β ＣＤ内腔高度的结构周期和“头头…     

聚（对羟基苯甲酸—对苯二甲酸双酚A酯）的液晶结构与相变

用ＤＳＣ、ＷＡＸＤ的热台偏光显微镜等了热处理和外力作用对标题共聚酯液晶微观结构和序态结构的影响，对出现的双玻璃化转变现象进行了讨论。     

巴比妥酸系列衍生物第一超级化率的理论研究及分子设计

在ＺＩＮＤＯ方法基础上,按完全态求和（ＳＯＳ）公式编制程序并计算了第一超极化率β,研究了巴比妥酸系列衍生物分子的结构,光谱和第一超级化率β（－２ω,ω,ω）,β（０,０,０）,考察了给体、桥和受体的变化、Ｄ－π－Ａ结构及Ｄ－Ａ－Ｄ结构和Ｄ－Ａ结构对β的影响,设计了一系列有实际应用价值的热稳定性好,具有优良非线性光学性质的分子。     

结晶聚合物晶相相容性的研究

通过ＤＳＣ、Ｘ－射线衍射、红外光谱及拉伸试验研究了ＨＤＰＥ与ＬＬＤＰＥ、ＨＤＰＥ与ＬＤＰＥ之间的晶相相容性。结果表明，链结构相近的ＨＤＰＥ和ＬＬＤＰＥ的晶相相容性好，能形成共晶，而链结构差异较大的ＨＤＰＥ和ＬＤＰＥ的晶相相容性较差，倾向于分别结晶。但有部分链段被对方的晶区夹持。不论是支化度大的ＬＤＰＥ锻段插入以ＨＤＰＥ为主的晶区，还是支化度小的ＨＤＰＥ锻段插入以ＬＤＰＥ为主的晶区，都可破坏晶区的规     

甘氨酸的杂多酚超分子化合物的合成及性质研究

首次合成了甘氨酸的Ｋｅｇｇｉｎ结构杂多酸超分子化合物（ＨＧｌｙ）３「ＰＷ１２Ｏ４０」．５Ｈ２Ｏ（ＨＧｌｙ）４「ＳｉＷ１２Ｏ４０」．４Ｈ２Ｏ,用元素分析,ＩＲ,ＵＶ,ＴＧ－ＤＴＡ,ＸＲＤ和ＮＭＲ等方法对标题化合物进行了表征,并讨论了它们的合成条件及结构特性。     

热塑性聚醚酰亚胺改性四官能度环氧树脂的相分离研究Ⅳ.聚醚酰亚胺用量的影响

研究了不同用量新型苯端基聚醚酰亚胺（Ｐ－ＰＥＩ）对其改性４,４’－二氨基二苯甲烷四缩水甘油醚环氧树脂（ＴＧＤＤＭ）／４,４’－二氨基二苯砜（ＤＤＳ）体系的固化速率及相结构的影响。结果表明,随着ＰＥＩ用量的增加,固化反应速率增大,形成了不同的相结构。解释了ＰＥＩ用量对粘接剪切强度的影响。     

软段结构对聚氨酯性能影响的研究

用熔融缩聚法俣成了己二酸系和己二酸／芳香二酸混合系两个系列的聚酯；同溶液一步法将部分聚酯与ＭＤＩ反应，形成一系列聚酯型氨酯，以化学分析，ＶＰＯ，ＩＲ，ＤＳＣ，ＷＡＸＤ，力学拉伸等手段对聚酯和聚氨酯进行了表征；讨论了软段聚酯的结构对聚氨酯的结晶性，耐热性，粘结性等性能的影响。     

新型含有机硅二元多嵌段共聚物的研究

报道了聚羟基醚（ＰＨＥ）、聚羟基醚砜（ＰＨＥＳ）、酚酞聚羟基醚（ＰＰＨＥ）和聚对羟基苯乙烯（ＰＨＳ）与端胺基聚二甲基硅氧烷（ＰＤＭＳ）通过羟胺缩合生成ＡＢｍｎ新型结构的可溶性含有机硅二元多嵌段共聚物，ｍ值在１～６之间，详细讨论了反应物浓度对共缩聚反应的影响，并通过分子量测定、红外光谱分析和动态力学分析（ＤＭＡ）技术初步确定了其反应机理、结构和动态力学性能．     

多聚氰梯型结构及其电子性质

采用量子化学半经验ＭＮＤＯ，ＣＮＤＯ／２准一晶体轨道程序（ｂａｎｄ３１、３２简写为ＣＮＤＯ／２－ＣＯ）探讨了多聚氰的双侧含氮梯型结构，初步揭示了结构稳定性和电子性质变化的规律，能带结构分析指出，梯型结构进一步向二维拓宽，将使体系能隙变小，本征电导率增加，上述结论与聚合度和电导率随裂解温度增高而相应增加的实验结果一致。     

紫外光固化PDLC膜的形态及电光性能

选用紫外光固化法制备了聚合物分散液晶（ＰＤＬＣ）膜，以ＳＬＭ方法对其形态结构进行了考察，进而测试了ＰＤＬＣ的电光性能，并讨论了性能与结构的关系。     

Extraction Mechanism of Uranium(VI) with Di(1-Methylheptyl)Phosphoric Acid

The extraction of U(VI) from nitric acid solutions with di-(1-methylheptyl) phosphoric acid has been investigated. The dependence on nitric acid concentration, DMHPA concentration and temperature has been considered and the infra-red spectra of extracted species and extractant were recorded. The mechanism of extraction is discussed in the light of the results obtained.     

Supramolecular liquid crystals formed by hydrogen bonding between a benzocrown-bearing stilbazole and carboxylic acids

The mesomorphism of hydrogen bonded complexes formed between 4'-carboxybenzo-15-crown-5 stilbazolyl ester (CBCSE) as proton acceptor and carboxylic acids as proton donors is discussed. CBCSE is a monotropic mesogen, forming a nematic phase upon quench cooling. A total of 32 hydrogen bonded complexes has been studied. Hydrogen bonding with carboxylic acids stabilizes the nematic phase, and/or induces a smectic A (SmA) phase. CBCSE forms 1:1 complexes (molar ratio) with alkanoic acids (fatty acids) and 2:1 complexes with alkanedioic acids. None of these proton donors is a mesogen itself, but the hydrogen bonded complexes are. The influence of the chain or spacer length on the transition temperatures is discussed. Besides the homologous series of the alkanoic and alkanedioic acids, the following carboxylic acids were used in this study: diglycolic acid, pyridine-2,6-dicarboxylic acid, 4-dodecyloxybenzoic acid, 3,4-bis(dodecyloxy)benzoic acid, 2,3,4-tris(dodecyloxy)benzoic acid and 3,4,5-tris(dodecyloxy)benzoic acid, phthalic acid, isophthalic acid and terephthalic acid.     

Complexes of acid amides with polar aprotic solvents. I

Complexes of bis(N-phenyl)-pyromellitic acid diamide with dimethylformamide were synthetized and studied by thermal mass-spectrometry. It was found that, depending on the precipitating agent applied, the composition of the complexes corresponded to 1 acid amide: 2 dimethylformamide or to 1 acid amide: 1 dimethylformamide. The effects of complex formation on the thermal cyclodehydration of bis(N-phenyl)-pyromellitic acid diamide and on the accompanying degradation processes are discussed.     

Tartaric Acid Modified Electrodes and Studies on its Application for the Anodic striphing Voltammetry of cu(Ⅱ)

The preparation of tartaric acid modified electrode was studied.Reaction mechanism of copper(Ⅱ) on tartaric acid modified electrode was discussed and determination conditions for trace Cu(Ⅱ) by ASV were also founded.     

Supramolecular liquid crystals formed by hydrogen bonding between a benzocrown-bearing stilbazole and carboxylic acids

The mesomorphism of hydrogen bonded complexes formed between 4'-carboxybenzo-15-crown-5 stilbazolyl ester (CBCSE) as proton acceptor and carboxylic acids as proton donors is discussed. CBCSE is a monotropic mesogen, forming a nematic phase upon quench cooling. A total of 32 hydrogen bonded complexes has been studied. Hydrogen bonding with carboxylic acids stabilizes the nematic phase, and/or induces a smectic A (SmA) phase. CBCSE forms 1:1 complexes (molar ratio) with alkanoic acids (fatty acids) and 2:1 complexes with alkanedioic acids. None of these proton donors is a mesogen itself, but the hydrogen bonded complexes are. The influence of the chain or spacer length on the transition temperatures is discussed. Besides the homologous series of the alkanoic and alkanedioic acids, the following carboxylic acids were used in this study: diglycolic acid, pyridine-2,6-dicarboxylic acid, 4-dodecyloxybenzoic acid, 3,4-bis(dodecyloxy)benzoic acid, 2,3,4-tris(dodecyloxy)benzoic acid and 3,4,5-tris(dodecyloxy)benzoic acid, phthalic acid, isophthalic acid and terephthalic acid.     

Determination of some reactive oxygen species scavengers based on the peroxidase-oxidase oscillator

This paper reports a new method for detection of ROS scavengers including superoxide dismutase, ascorbic acid and glutathione based on a 'probe' of peroxidase-oxidase biochemical oscillator. The oscillation period and amplitude change with different concentrations of scavengers. The linear ranges of superoxide dismutase, ascorbic acid and glutathione are respectively 1.56 x 10(-4)-1.56 x 10(-3) mg mL(-1), 1.75 x 10(-7)-1.75 x 10(-5) mol L(-1) and 9.38 x 10(-7)-7.5 x 10(-5) mol L(-1). The selectivity, linearity and precision for superoxide dismutase, ascorbic acid, and glutathione are presented and discussed. The results compared well with other standard methods for determination of superoxide dismutase, ascorbic acid and glutathione. Some possible steps in the overall reaction mechanisms are discussed.     

聚合物侧基的双分子亲核取代反应——含α-氨基酸手性配体的丙烯酸酯类不对称配位树脂的合成

The macromolecular reaction is one of the important basic methods for synthesis of functional polymers. Being used for resolution of a-amino acid enantiomers, ten different poly (ethyl o-methacrylate) containing chiral a-amino acid ligands were prepared and the SN2 reaction mechanism was discussed in detail. The effects of the property and amount of solvent, the types and concentration of a-amino acid, the temperature and time of reaction and the base catalysts on the SN2 reaction were also discussed.     

聚合物侧基的双分子亲核取代反应——含α-氨基酸手性配体的丙烯酸酯类不对称配位树脂的合成

由于外消旋化合物通过含手性配体的不对称配位树脂进行光学拆分已有一些完全成功的报道,因而近年来研制和开拓具有不同配体,尤其是含有α-氨基酸的手性树脂已引起人们极大兴趣,考虑到丙烯酸酯类为母体的手性树脂具有价廉易得、亲水性好、配     

Meso-四(对羟基苯基)卟啉及其金属配合物的合成与表征

以丙酸为溶剂，用吡咯和对羟基苯甲醛直接合成了Meso-四（对羟基苯基）卟啉，探讨了溶剂丙酸和无水乙醇的用量对反应产率的影响；利用液相法合成了Mesc〉四（对羟基苯基）卟啉与Fe^3＋，Mn^2＋，Co^2＋，Ni^2＋，Cu^2＋和Zn^2＋ 6种金属离子形成的配合物，探讨了Meso-（对羟基苯基）卟啉与金属盐用量的比例对产率的影响；利用UV-Vis和MS对合成的物质进行表征．     

The extraction of beryllium(II) by di-(2-ethyl hexyl)-phosphoric acid from sulphate media

The distribution of Be(II) between aqueous sulphuric acid solutions and organic phases of di-(2-ethyl hexyl)-phosphoric acid (HDEHP) has been described. The dependence of extraction on contact time, acidity, metal and extractant concentration, diluent type and temperature was thoroughly investigated. The possible mechanism of the extraction is discussed on the basis of results obtained.