Synthesis of 2,2＇-（Substituted Arylmethylene）bis（1,6,6-trimethyl 6,7,8,9-tetrahydrophenanthro[1,2-b]furan-10,11-dione） Derivatives

The reactions of tanshinone IIA with aromatic aldehydes have been investigated and several 2, T-（substituted arylmethylene） bis （1,6,6-trimethyl-6,7,8,9-tetrahydrophenanthro[1,2-b]- furan- 10, 11-dione） derivatives were obtained,     

Synthesis of the Biomimetic Polymer： Aliphatic Diamine and RGDS Modified Poly（d,l-lactic acid）

A novel poly（d, /-lactic acid） （PDLLA） based biomimetic polymer was synthesized by grafting maleic anhydride, butanediamine and arg-gly-asp-ser （RGDS） peptides onto the backbone of PDLLA, aiming to overcome the acidity and auto-accelerating degradation of PDLLA during degradation and to improve its biospecificity and biocompatibility. The synthetic copolymer was characterized by FTIR, ^13C NMR and amino acid analyzer （AAA）.     

Coumarin-conjugated cyclodextrins: remarkable enhancement of the chemical-to-light energy transfer efficiency

One or two coumarin units were incorporated to the primary face of γ-cyclodextrin (γ-CD), and the resultant coumarin derivatives were employed to harvest the chemical energy generated in the reaction of bis(trichlorophenyl)oxalate with hydrogen peroxide. In comparison with the coumarin without CD cavity for molecular recognition, the coumarin–CD conjugates demonstrated much higher chemiluminescence inetensity, indicating that the CD moiety remarkably improves the chemical energy transfer.     

含钼化合物及其配合物的抗癌抗肿瘤活性

钼是生命体所必需的微量元素。本文介绍了钼在人体中的作用，钼缺乏和钼过量对人体的影响，并介绍了含钼化合物以及配合物的抗癌抗肿瘤研究情况。     

EFFECT OF MOLECULAR WEIGHT OF PDMS ON MORPHOLOGY AND MECHANICAL PROPERTIES OF PP/PDMS BLENDS

 A series of polydimethylsiloxane (PDMS) with varied molecular weights (Mw = 3  106, 1  106 and 0.5  106) were melt blended with PP to investigate the effect of PDMS molecular weight (MW) on the morphology and mechanical properties of PP/PDMS blends. Scanning electron microscopic (SEM) examination showed that the size of PDMS domains was dependent on the MW of PDMS. It was found that the lower the value of PDMS MW, the better dispersion of the PDMS domains in the PP matrix. Tensile and Izod impact tests revealed that the addition of PDMS with lower MW would lead to a more significant increase in impact strength of the blends compared with the blends with higher MW ones, while the influence of the molecular weight on tensile strengths of the blends was relatively small in the MW range studied. Differential scanning calorimetry (DSC) results also showed that the crystallization temperature of PP was increased with decreasing PDMS MW, indicating a better nucleation capability of lower MW of PDMS. Melting flow rate (MFR) measurements indicated that the processibility of PP could be enhanced by adding PDMS, and again the lower MW PDMS resulted in better data. Our work demonstrates that not only the processibility but also the mechanical properties of PP could be enhanced to a more significant degree by using low MW PDMS than the higher ones.     

水热合成CdS纳米晶体的形貌控制研究

研究了水热合成CdS纳米晶体形貌的化学控制，选择不同的络合试剂为模板,研究其对水热合成CdS纳米晶体形貌的影响.实验发现若以络合试剂乙二胺、甲胺为模板时，产品CdS晶体的形貌分别为（20～30） nm×（200～600） nm和（40～50） nm×（200～600） nm尺寸的纳米棒;而以络合试剂吡啶、 氨为模板时，产品CdS晶体的形貌分别为平均尺寸约30 nm和20 nm的纳米颗粒.用XRD、TEM、XPS、PL和Raman光谱等技术对所得CdS纳米棒进行了表征.同时对水热合成CdS纳米晶体形貌的模板控制机制进行了探讨，提出了一种水热合成CdS纳米棒的络合物结构诱导生长机理.     

微波辐射下2-氨基-7-甲基-4-芳基-5-氧代-4H,5H-吡喃并[4,3-b]吡喃-3-腈的一步合成

芳醛、丙二腈与6-甲基-4-羟基-2-吡喃酮在微波辐射下, 一步反应得到一系列2-氨基-7-甲基-4-芳基-5-氧代-4H,5H-吡喃并[4,3-b]吡喃-3-腈, 该反应时间短、产率较高、环境友好、后处理简单. 产物的结构经红外光谱、核磁共振谱和元素分析表征, 产物4g的结构经单晶X射线衍射进一步确证; 并对反应过程提出了可能的机理.     

聚全氟丙醚油微观结构的研究

聚全氟丙醚油是一种新型的性能独特的润滑油。本实验采用~（１９）Ｆ－ＮＭＲ波谱法，结合~１Ｈ－ＮＭＲ和ＭＳ法，较详细地研究了油品微观结构。由谱线的化学位移和强度归纳出不同链节结构的分布，同时阐明了端基结构。     

沸石催化剂上醇的醚化反应

研究了乙醇，正丁醇，仲丁醇和正戊醇有ＺＳＭ－５和Ｂｅｔａ沸石上的醚化反应。用ＮＨ３－ＴＰＤ和ＩＲ测定了ＺＳＭ－５沸石的表面酸性，讨论了沸石表面Ｂ酸和Ｌ酸和与醚化活性的关系。结果表明，乙醇的脱水反应既可以在Ｂ酸中心上进行，也可以在Ｌ酸中心中心上进行，既可以在强酸中心上进行，亦可以在弱酸中心上进行。     

用^3HNMR波谱法分析微波激发催化交换制备的^3H标记颠茄类生物碱

用~3H NMR波谱法测定了微波激发催化交换制备的四种~3H标记颠茄类生物碱示踪剂的氚标记位置及其相对百分含量。并在用~1H NMK归属原料纯度及标记物分子各基因化学位移时采用了水峰抑制技术(简称WEFT),既能同时消除溶剂氘代甲醇及水峰的影响;又能提高灵敏度(近10倍),从而计算出所得标记产物的化学纯度值与放化纯度值。为快速、准确寻找制备标记生物碱的最佳实验条件和控制标记物质量提供了唯一的物理无损分析方法。