β－环糊精含硫衍生物自组单分子膜修饰金电极的选择穿透性研究

β－环糊精含硫衍生物自组单分子膜修饰金电极的选择穿透性研究何品刚，方禹之，铃木，嚴长，哲郎（华东师范大学化学系，上海，２０００６２）（东北大学药学部，仙台９８０，日本国）关键词硫辛酰－β－环糊精衍生物，自组单分子膜，金电极近年来，为在分子水平上控制和...     

GFAAS法基体改进剂对氯化物背景干扰清除及机理

本文探讨了石墨炉原子吸收光谱法(GFAAS)中的酒石酸、草酸和柠檬酸等七类基体改进剂在283.3nm波长氘灯测量方式对氯化物背景吸收干扰的清除效果,认为基体改进剂的作用是与干扰物形成了低沸点的挥发物,并讨论了其形成机理。     

高分子阳离子导体的研究进展

本文综述高分子阳离子导体的研究进展,并总结改进室温下阳离子导体导电性的方法。     

~(14)N ENDOR Study on Bis(2-Hydroxylphenyl Ketoxime)-~(63)Cu(Ⅱ) Complex

The ENDOR spectrum of ~(14)N-~(63)Cu-HAP complex in DMSO/EtOH (5:1) freezing solution at 20 K has been studied using orientational selective method in this paper. The anisotropic superhyperfine coupling tensor and qusdrupole coupling tensor of ligand ~(14)N nucleus, and the superhyperfine coupling tensor of various ~1H nuclei have been measured precisely. Comparing the superhyperfine coupling tensor of ~(14)N-nucleus with previous work shows that the analytical method of spectrum is reasonable and the data are reliable in our previous work.     

Catalytic Spectrophotometric Determination of Ultratrace Amounts of Silver with Solubilizing Effect of Nonionic Surfactant

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Crystal Structure and Luminescence of a Europium Coordination Polymer {[Eu(p-MOBA)_3·2H_2O]·0.5H_2O· 0.5(4,4′-bipy)}_∞

ＩｎｔｒｏｄｕｃｔｉｏｎＭｏｎｏｎｕｃｌｅａｒ ,ｄｉｎｕｃｌｅａｒａｎｄｐｏｌｙｍｅｒｉｃｔｙｐｅｓｏｆｃｒｙｓ ｔａｌｓｔｒｕｃｔｕｒｅｓｆｏｒｌａｎｔｈａｎｉｄｅｃｏｍｐｌｅｘｅｓｗｉｔｈｂｅｎｚｏｉｃａｃｉｄａｎｄｉｔｓｄｅｒｉｖａｔｉｖｅｓｈａｖｅｂｅｅｎｏｂｔａｉｎｅｄｂｅｃａｕｓｅｏｆｔｈｅｖａｒｉ ａｔｉｏｎｏｆｂｒｉｄｇｉｎｇｆｏｒｍｓｆｏｒｃａｒｂｏｘｙｌａｔｅｇｒｏｕｐａｎｄｃｏｏｒｄｉｎａ ｔｉｏｎａｂｉｌｉｔｙｏｆｄｉａｍｍｉｎｅｌｉｇａｎｄｓ ,ｓｕｃｈａｓ 1,10 ｐｈｅｎａ…     

含氨基酸侧链的有机硅高分子催化剂 ⅩⅤ.γ-(L-酪氨酰胺基)丙基硅氧烷钯催化剂的合成加氢活性及其结构表征

本文报导了四种不同N/Pd摩尔比的聚γ-(L-酪氨酰胺基)丙基硅氧烷钯催化剂的合成及其催化加氢活性,这类催化剂与聚γ-((L-酷氨酸)丙基硅氧烷钯催化剂相比较,虽然均具有类似的N→Pd配位的活性中心组成,但它们对底物的加氢活性则明显不同,前者对丙烯腈、丙烯酸、环己烯和1-癸烯的催化活性比后者高,对苯乙烯则相反。N/Pd摩尔比、反应温度、溶剂以及体系的pH值对催化活性的影响,两者的情况大致相同,标题催化剂对衣康酸的催化加氢,产物的光学纯度为30％。     

FREE STANDING FILM OF POLYANILINE

A free standing film of polyaniline as large as 18 cm×18cm×0.002 cm can be obtained by evaporation of a solution of the chemically synthesized base in NMP. Its structure was examined by the elemental analysis, IR, U.V.-visible spectra, XPS, DSC, SEM and X-ray scattering and its conducting behavior as well as electrochemical properties were studied. Results show that the composition, structure of main chain, physical properties of the free standing film of polyanilme is similar to that of the powder. However, some differences in its electronic structure, conductivity at room temperature and potential of redox couple between the flee standing film and powder are observed, which may be due to cross-linking of the film of polyaniline.     

盐类对4-氯-4′-羟基二苯砜钾盐真空熔融聚合的影响

聚苯砜醚是一种综合性能比较好、可在180℃长期使用的热塑性工程塑料,在国内外受到一定的重视。我们与武汉化工原料厂协作,对4-氯-4′-羟基二苯砜钾盐真空熔融缩聚合成聚苯砜醚的途径进行过一些探索,得到了较好的结果。但是,在实践中发现,由于这一反应速度快,放出的热量大而集中,在真空中聚合热不易导出,随着单体用量     

双氮桥联1,10-菲咯啉大环化合物分子构型的从头算研究

应用规范不变原子轨道法(GIAO)在RHF/6-31G**和B3LYP/6-31G**水平上计算了质子化双氮桥联1,10-菲咯啉大环化合物(H4HAPP2+)C2h和C2h构型的1HNMR,并用TDDFT法计算了H4HAPP2+电子光谱.结果表明,B3LYP/6-31G*优化的C2h构型为较优构型,经谐振频率验证无虚频,C2h构型是H4HAPP2+合理的对称性构型.