各种离子对血卟啉与牛血清白蛋白相互结合反应的影响研究

应用荧光法研究了水溶液体系中血卟啉与牛血清白蛋白分了间相互结合反应，其结合常数ＫＡ＝２．２×１０＾４，结合位置数为１．依据Ｆｏｒｓｔｅｒ非辐射能量转移机理，探讨了血卟啉与牛血清白蛋白相互结合时，其给体－受体间距离和能量转移效率，进一步研究了各种离子与牛血清白蛋白的结合反应，其结合淬灭能力大小顺序为Ｃｒ（Ⅵ）〉Ｆｅ＾３＋〉Ｃｕ＾２＋〉ＮＯ２〉Ｂｒ＾－，并探讨不同阴，阳离子及血卟啉与牛血清白蛋白间相互     

二氧化碳在高分子合成中的应用

综述了ＣＯ２在高分子合成中的研究现状，介绍了以ＣＯ２为原料合成高分子的经典方法和新型等离子体聚合法，在此基础上对ＣＯ２在高分子材料领域中的应用作了展望。     

非晶态Co-B的局域电子结构的X_α原子簇计算

金属玻璃TM-Met(TM为过渡金属原子,Met为类金属原子,如硼、磷等)由于其优异性能已成为非晶态研究的重要课题之一。实验研究表明,类金属原子与过渡金属原子构成非晶态合金(即金属玻璃)后,平均原子磁矩随Met的含量在一定范围内的变化呈线性下降关系.相当多的文献用“电荷转移刚性能带”模型来解释.认为金属玻璃的能带是     

非晶态Co-B的局域电子结构的Xα原子簇计算

In the research on metallic glass, there are arguments against the "rigid band charge transfer", model which assumes a charge transfer from metalloid atoms to transition metal atoms to explain the experimental evidence of linear reduction of average atomic magnetic moment with the increasing concentration of metalloid atoms, but they could not explain the experimental relation of the reduction. In the present work, spin-polarized SCC-DV-X_a calculation for atomic clusters for metallic glass Co-B has been empoloyed to investigate the local electronic structure and magnetic property of the metallic glass. As opposed to the "rigid band charge transfer" model, calculation in the present work indicates that charge transfers from Co4s to both B and Co3d. It is found that there is Co3d4s-B2p hybird bonding in Co-B, which leads to the linear reduction of average atomic magnetic moment. Thus the explanation removes the above controversy.     

分散介质和表面活性剂对γ-Fe_2O_3/聚丙烯酸锂复合微粒电流变效应的影响

采用反乳液聚合方法制备了γ－Ｆｅ２Ｏ３／聚丙烯酸锂复合微粒，将其悬浮分散于硅油、液体石腊等绝缘介质中形成电流变体。考察了在直流和交变电场作用下分散介质的种类、表面活性剂种类及用量等对复合微粒电流变效应的影响。     

四硫富瓦烯衍生物/硬脂酸LB膜的导电性研究

报导了14种四硫富瓦烯衍生物／硬脂酸LB膜的导电性，并解释了硬脂酸量和碘蒸气掺杂对LB膜导电性的影响．     

六次甲基四碲富瓦烯二碘盐的合成、晶体结构及其某些固态物性

在两相混合溶液中电解合成了HMTTeF·I_2盐的单晶。晶体属P2_1/n空间群,独立区里有一个HMTTeF分子,离子化发生在分子中的一个碲原子孤电子对上。粉末压片常温电导率为4.1×10~(-5)Scm~(-1)。喇曼光谱测定与电导率及X射线分析结果相符。     

CRYSTAL STRUCTURE OF NEODYMIUM（Ⅲ）COMPLEX WITH1，2，4—BENZENETRICARBOXYLIC ACID

<正> [NdC6H3(COO)3(H2O)3]·H2O, Mr=423. 45, orthorhombic,space groupP212121,a=6. 120(3) ,b=9. 719(2) ,c=20. 133(8) A ,V=1197. 5A3.Z = 4,F (000) = 820,DC=2. 35g/cm3,μ(Moka) = 44. 1cm-1.The final R = 0. 0278 and Rw= 0. 0270 for 1760(I>3σ(I)) observed unique reflections. The neodymium ion is nine-coordinated by six oxygen atoms of carboxylato groups from four 1, 2, 4-benzenetricar-boxylates and three aqua molecules,forming a distorted monocapped square antiprism. The Nd -O distances fall in the range of 2. 41 - 2. 70A with an average of 2. 51A     

用Monte-Carlo方法研究八面沸石的脱铝过程

八面沸石中的骨架铝可按其环境次邻位上出现的铝数分为4类。环境无次邻铝的铝离子形成分子筛的强酸中心;周围有1至3个次邻铝的铝离子形成的酸中心酸性较弱,与前者相比易于从骨架上解脱。基于一级动力学近似,用Monte-Carlo方法模拟八面沸石脱铝过程,得到4种类型铝离子的数目随硅铝比改变而演化的规律。预计硅铝比在6.68附近,脱铝八面沸石中的强酸中心数目达到极大值;如果强、弱酸中心铝离子的解脱速率差别较大,则脱铝八面沸石中强酸中心浓度较高。 关键词：     

DETERMINATION OF BRANCHING DISTRIBUTION IN HIGH cis-1,4-POLYBUTADIENE BY GPC AND AUTOMATIC VISCOMETRY

Based on the methods reported by Ambler and Kraus, a method has been developed for the determination of long-chain branching distribution in polymers by the combined use of GPC and intrinsic viscosity data of polymer fractions. In this method, g_i, λ_i, G_i, m_i, the weight percentage of polymer that is branched, etc. can be used simultaneously to characterize the distribution, degree and content of branching in polymers. Some relations between molecular weight polydispersity and branching polydispersity in Nickel-based high cis-1,4-polybutadiene samples are discussed. It was found that the number of long branches λ. per unit molecular weight is a function of molecular weight and all of the samples are highly branched at a molecular weight of about 10~6.