酰亚胺及磺酰苯酰亚胺的氰甲基化新方法

二乙胺基乙腈分別与苯邻二酰亚胺、丁二酰亚胺或邻-磺酰苯酰亚胺反应后,可生成相应的N-氰甲基苯邻二酰亚胺、N-氰甲基丁二酰亚胺,N-氰甲基邻磺酰苯酰亚胺及O-氰甲基邻磺酰苯酰亚胺。酰亚胺或磺酰苯酰亚胺的氰甲基化反应活性,随氮负离子的稳定性及其酸性增强而增大。     

n型碲化镉单晶光电化学电池的研究 Ⅱ.金属离子修饰与光电化学催化

n-CdTe单晶表面用H_2PtCl_6或RuCl_3溶液浸渍,显著提高了电池的效率及稳定性.除选择金属离子种类外,电极预处理及浸渍时间对修饰作用也有很大影响.固体表面分析表明,在PtCl_6~(2-)溶液中短时间浸渍的电极表面上有大量铂岛,能减少表面缺陷并催化界面反应.在RuCl_3溶液中浸渍,将可使Ru~(3+)离子吸附于电极表面,有利于光电化学反应.PdCl_2溶液浸渍或长时间PtCl_6~(2-)溶液处理均得到不利的结果.     

碘掺杂的3-乙基-5-[2-(3-乙基-2苯并噻唑啉基)亚乙基]罗丹宁的结构与电性能

The merocyanine dye 3-ethyl-5-(2-(3-ethyl-2-benzothiazolinylidene)-ethylidene)-rhodanine (BTER) known as Agfa-10 has been found to have a good photoconductivity as solution cast film. In this paper iodine-doped BTER was obtained by doping with iodine vapor. Its structure was investigated with the following characteristies. 1 The doped iodine had been excited as I_3~- anion. 2 Because the electron located on the sulphur atom was transferred to iodine, the charge transfer complex of (BTER-I_3) formed. 3 During the iodine doping process, BTER changed from α-form to β-modification. These had been identified by X-ray diffraction, VIS-absorption spectra and SEM picture.4 From the volt-Ampere curve obtained from sandwich cell, when E≤2.2×10~(-1) V·cm~(-1), the room temperature electrical conductivity of BTER and BTER-I_3 were found to be 2.22×10~(-10) s·cm~(-1) and 2.6×10~(-7) S·cm~(-1), respectively.     

Formation and Structure of [Al_(13)(μ_3-OH)_6(μ_2-OH)_6(μ_2-OH)_(12)(H_2O)_(24)]Cl_(15)·13H_2O

1 INTRODUCTION At present, the polyaluminium compounds are mainly studied by single-crystal X-ray diffraction method to obtain the components, structures and exis- tence forms of aluminium in hydrolysis system, and then hydrolysis courses and mechanisms of each hydrolytic polyaluminium cation could be further dis- closed[1～5]. Generally, the single crystals suitable for X-ray diffraction are obtained from the crystallization of polyaluminium cations into sulfates or selenates. Following …     

一种软包装超级电容器及其高电压模块

超级电容器是一种介于电池与传统电容器之间的新型储能器件，具有高能量密度、高功率密度的双重特性。超级电容器可以配合燃料电池、锂离子电池作为电源系统，解决电动汽车在加速、爬破、刹车时单一电池无法克服的问题；超级电容器也可以作为太阳能、风能等绿色发电系统储能装置；它亦可以作为电子、通讯、医疗等设备的主力电源。为此，在近20年来，超级电容器成为发达国家（美国、俄罗斯、日本、澳大利亚以及欧洲国家）重点投资研究开发项目，并于20世纪80年代国际各大电气公司把多种超级电容器陆续投放市场。     

(R)-α-烷基糠胺的不对称合成

本文通过(+)-樟脑缩呋喃甲亚胺的不对称烷基化反应, 合成了(R)-α)-烷基糠胺。反应的非对映选择性经1H NMR测定为5～67%(d.e)。用1, 3-二碘丙烷和α, α-二溴邻二甲苯作烷基化试剂, 得到预期的双亚胺烷基产物, 而用1,2-二溴乙烷时,却给出偶联产物。     

锌和锡参与下末端环氧化物的选择性烯丙基化反应

烯丙基溴和金属辛或锡成功地将末端环氧化合物1一锅法合成高烯丙基醇2和双高烯丙基醇3. 还研究了环氧化合物取代基的影响, 并提出了此烯丙基化的反应途径 .     

Synthesis and Crystal Structure of Ethyl 5-Amino-1-[（5′-methyl-1′- t-butyl-4′-pyrazolyl）carbonyl]-3-methylthio-1H-pyrazole-4-carboxylate

1INTRODUCTIONPolarizedketenedithioacetalshavebeenex-tensivelyusedasbuildingblocksinorganicsyn-thesis,especiallyinthesynthesisofheterocycliccompounds[1～6].Pyrazoleanditsderivativesrepre-sentoneofthemostactiveclassesofcompoundspossessingwidespectraofbiologicalactivities.Overthepastfewyears,considerableevidenceshavebeenaccumulatedtodemonstratetheefficacyofpyrazolederivatives,suchasantibacterial[7],fun-gicidal[8],herbicidal[9],insecticidal[10]andotherbiologicalactivities[11,12].Uptonow,alarg…     

镍、铅、LB膜对n-Si光电极的修饰

本文研究了金属(镍、铅)与Langmuir-Blodgett膜对n-Si电极光电化学行为的影响, 观察到镍与铅能增强该电极的能量转换效率与稳定性。测定和讨论了八种有机物得的LB膜对n-Si/Ni电极的修饰作用, 最佳的长链香豆素LB膜使其效率倍增。还研究了具有MIS器件结构的Si/LB/Al电极的光电化学行为, 发现它具有良好的光电效应。