三氯化锑和二氧杂环己烷配合物[SbCl_3·{(CH_2)_4O_2}_(1.5)]的合成与晶体结构(英文)

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三氯化锑和二氧杂环己烷配合物[SbCl3·{(CH2)4O2}1.5]的合成与晶体结构

New solid complex of the antimony trichloride and dioxane was obtained th rough a reaction of the dioxane and the absolute methanol solution of the antimony trichloride.The formula of the complex is[SbCl₃·{(CH₂)₄O₂}_1.5].The crystal structure of the complex belongs to cubic system,space group I-43d,a=17.1417(5)Å,Z =16.The trivalent antimony ion n ot only bonds directly to three chlorine anions,but also is coordinated by three oxygen atoms of th e dioxane molecules.Two oxygen atoms in a dioxane molecule will coordinate to different antimony ions,respectively.     

二甲基烯丙基苄基氯化铵的合成及表征

用氯化苄与二甲基烯丙基胺为原料合成了二甲基烯丙基苄基氯化铵,研究了光照、温度、原料配比、反应时间和溶剂等因素对反应产率的影响,确立了最佳反应条件,并对产物的结构进行了表征.     

亲水单体对聚氨酯-含氟丙烯酸酯复合乳液颗粒和表面性能的影响

为了提高聚氨酯-丙烯酸酯聚合物的耐水性和耐溶剂性, 将N-甲基二乙醇胺(MDEA)扩链的交联聚氨酯丙酮溶液作为反应介质, 以苯乙烯、丙烯酸丁酯、含氟丙烯酸酯(FA)为单体, 过氧化苯甲酰为引发剂, 通过溶液聚合相转化法制得新型阳离子聚氨酯-含氟丙烯酸酯复合乳液. 研究了MDEA对聚合物水分散液的乳胶粒径、Zeta电位以及乳胶膜表面性能的影响, 并用FTIR, TEM对聚合物的结构和乳胶粒形态进行了表征. 结果表明, MDEA的添加利于降低乳胶粒径, 但对乳胶膜的疏水性能有不利影响, 当MDEA的质量分数为13.15%时, FPUA乳胶粒的形态呈球形, 粒径约为253 nm, 乳胶膜的表面自由能低于25.1 mJ/m², 接触角衰减速率约为0.38 (º)/min. 另外, 乳胶膜的高温处理能够使表面自由能降低11.5%以上.     

Blue fluorescent polyamides containing naphthalene and oxadiazole rings

New polyamides containing 1,3,4‐oxadiazole and naphthalene rings were prepared by low‐temperature solution polycondensation reaction of a new diamine containing preformed oxadiazole ring with various aromatic diacid chlorides. Elemental analysis, mass, infrared, and nuclear magnetic resonance spectroscopy were used to confirm the structure of the monomers and corresponding polymers. The thermal stability and glass transition temperatures of these poly(oxadiazole‐amide)s were measured and compared with those of related polymers. Their good solubility allows them to be processed in very thin films with smooth surfaces, without pinholes or cracks, when studied by atomic force microscopy. Upon irradiation with UV light the polymers showed photoluminescence maxima in the blue spectral range, both in solution and in solid state. Cyclic voltammetry (CV) was performed in order to obtain information about the electrochemical stability and reversibility of the redox processes of these polyamides. The highest occupied molecular orbital and the lowest unoccupied molecular orbital energy levels, and electrochemical and optical band gap values were calculated by using the results of CV and UV/vis, respectively, showing very good electron and hole injection and transport characteristics. These properties make the present polymers suitable for application in electroluminescent devices. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011     

An expedient one-pot synthesis of benzophenone Schiff bases from benzene

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卟啉铝催化下二氧化碳与氧化环己烯共聚反应研究

利用四苯基卟啉氯化铝(TPPAlCl)与双三苯基膦氯化铵(PPNCl)组成的二元催化剂催化二氧化碳与氧化环己烯共聚合,80℃下反应9h,二氧化碳-氧化环己烯共聚物(PCHC)的收率为97.2％,分子量分布窄(Mw/Mn=1.12),但数均分子量仅为6.8×103.研究发现溶剂的浓度和极性变化对聚合过程中的链转移反应影响...     

Control of stereospecificity in the radical polymerization of N‐methyl‐N‐(2‐pyridyl)acrylamide by conformational switching of the monomer with protonation

Radical polymerization of N‐methyl‐N‐(2‐pyridyl)acrylamide (MPyAAm) was carried out in dichloromethane at low temperatures in the presence of trifluoroacetic acid (TFA). The m dyad contents of the polymers obtained at 0 °C increased linearly from 37 to 60% with an increase in the [TFA]₀/[MPyAAm]₀ ratio from 1 to 5. Nuclear magnetic resonance (NMR) analysis of MPyAAm–TFA mixtures in dichloromethane‐d₂ revealed that the favorable conformation in terms of the pyridyl group to the carbonyl group in MPyAAm switched from s‐trans to s‐cis by protonation. The results suggest that controlling the conformation of MPyAAm resulted in control of the stereospecificity in radical polymerization of the monomer. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011     

A Facile Synthesis of Novel [4‐(Aryl)‐3a,4,5,9b‐tetrahydrocyclopenta[c]quinolin‐8‐ylmethyl]‐8′‐(4′‐aryl)‐3a′,4′,5′, 9b′‐tetrahydro‐3H‐cyclopenta[c]quinolines: Indium Trichloride Catalyzed Intermolecular Imino Diels–Alder Reaction of Cyclopentadiene with Schiff's Bases

Abstract

A simple and efficient method for the synthesis of the title compounds from Schiff's bases derived from 4,4′‐diaminodiphenylmethane and excess of cyclopentadiene using anhydrous indium trichloride as a catalyst is described.     

含荧光基团的AA-MA共聚物阻垢剂的合成及其阻垢性能

以4-溴-1,8-萘二甲酸酐和乙二胺为原料,经3步反应合成了一种新型荧光单体——4-甲氧基-N-(2-丙烯酰胺乙基)-1,8-萘二酰亚胺(Ⅲ);Ⅲ与丙烯酸(AA)和马来酸酐(MA)共聚制得新型示踪共聚物AA-MA-Ⅲ(1),其结构经IR,TG-DTA和SEM表征。1的荧光性质和阻垢性能研究结果表明,其荧光强度与质量浓度呈良好线性关系,线性相关系数为0.998 5,检测下限为1.0×10-2mg.L-1;1对碳酸钙垢沉积有较好的抑制作用,当用药量为20 mg.L-1时对碳酸钙阻垢率为93.5%,且具有较好的分散氧化铁的能力;SEM观察表明1对碳酸钙垢既有较强的分散作用又具有明显的晶格畸变作用。