含有三苯胺环类席夫碱的合成

以4,4’-二甲酰基三苯胺为原料,通过Wittig和胺醛缩合反应合成了两个含有三苯胺环席夫碱类化合物——4-(对甲基苯乙烯基)-4’-亚(α-萘胺)甲基三苯胺和4-(对甲基苯乙烯基)-4’-亚(2-氨基芴)甲基三苯胺,其结构经1H NMR,13CNMR和IR确证。     

N,N-二[4-(9H-9-咔唑基)苯基]-3,5-二溴苯胺的合成

以3,5-二溴苯胺,碘苯和咔唑为原料,经取代和Ullmann反应合成了一个新的含咔唑三苯胺化合物——N,N-二[4-(9H-9-咔唑基)苯基]-3,5-二溴苯胺,其结构经1H NMR,13C NMR和ESI-MS表征。     

新型三苯胺-苝酰亚胺分子阵列的合成及其光学性能

以三苯胺(1),乙二胺和3,4,9,10-苝四甲酸二酐为原料,合成了一种新型的三苯胺-苝酰亚胺分子阵列(5),其结构经~1H NMR和IR表征.用UV-Vis和荧光发射光谱研究了5的光学性能,结果表明5中发生了从三苯胺基元到苝酰亚胺基元的分子内能量转移过程.     

3-三氟甲基联苯的合成

以3-三氟甲基苯胺为原料,叔丁醇亚硝酸酯为重氮化试剂,铜粉为催化剂,采用改良的Gomberg反应合成了3-三氟甲基联苯。最佳的反应条件为：3-三氟甲基苯胺20mmol,叔丁醇亚硝酸酯的用量为3-三氟甲基苯胺摩尔数的两倍,Cu的用量为3-三氟甲基苯胺摩尔数的0．6倍,于在40℃反应5h,其结构经^1H NMR,^13C NMR和IR表征。     

对三氟甲基肉桂酸的合成

以对三氟甲基苯胺为原料,经重氮化和缩合反应合成了高纯度的对三氟甲基肉桂酸,总收率41.4%。其结构经1H NMR表征。     

多氟苯脲衍生物的合成研究

以三氟苯胺、对取代苯胺和固体光气为原料,基于异氰酸酯法合成了两种多氟苯脲衍生物。产品结构经IR,1H NMR,ESI-MS和元素分析表征,并对反应条件和波谱性质进行了讨论。     

甲氧苄啶的合成

丙烯腈与苯胺经ZnCl2/AcOH体系催化加成得β-苯胺丙腈(2);2与3,4,5-三甲氧基苯甲醛在叔丁醇钾存在下缩合制得β-苯胺基-α-3,4,5-三甲氧基苯基丙烯腈(3);3在甲醇钠甲醇溶液中与硝酸胍环化合成了甲氧苄啶(TMP),总收率77.1%.3和TMP的结构经1H NMR和EI-MS表征.     

N-(4-氯-3-三氟甲基苯基)-N′-(对取代苯基)脲的合成

以4-氯-3-三氟甲基苯胺、固体光气、对取代苯胺为原料,采用一锅法合成了N-(4-氯-3-三氟甲基苯基)-N-′(对甲基苯基)脲和N-(4-氯-3-三氟甲基苯基)-N-′(对溴苯基)脲,其结构经1H NMR,IR和元素分析表征。     

新型刚性芳环桥连甲硫基-二茂铁苯胺化合物的合成及其电化学性质研究

二茂铁苯胺(3a～3c)分别与对甲硫基苯甲醛反应合成了三个新型的含对甲硫苯基的二茂铁席夫碱化合物(4a～4c);4a和4b经硼氢化钠还原碳氮双键得到两个N-(对甲硫苄基)二茂铁苯胺化合物——N-(对甲硫苄基)对二茂铁苯胺(5a)和N-(对甲硫苄基)间二茂铁苯胺(5b),其结构经1H NMR,IR和MS表征。电化学循环伏安研究表明,4a～4c与5a,5b略有差异,其中5a不易得到电子。     

含二苯胺2,6-二咔唑基吡啶共轭化合物的合成

以咔唑,2,6-二溴吡啶和二苯胺为原料,经Ullmann和碘代反应合成了4个含二苯胺2,6-二咔唑基吡啶共轭化合物:3-二苯胺基-2,6二咔唑基吡啶,3,3’-二(二苯胺基)-2,6-二咔唑基吡啶,3,3’,6-三(二苯胺基)-2,6-二咔唑基吡啶和3,3’,6,6’-四(二苯胺基)-2,6-二咔唑基吡啶,其结构经1H NMR和IR确证。     

Preparation and properties of polyurethane networks based on α,ω-difunctional poly(hexafluoropropylene oxide)

Poly(hexafluoropropylene oxide), poly(HFPO), networks were prepared from functional polymers by end linking via urethane groups. The prepolymers were characterized by NMR spectroscopy and GPC. The networks were characterized by determination of the number of network chains from the shear modulus, and were snown to contain both trifunctional crosslinks and difunctional links. The properties of the networks were investigated by a range of techniques. Compared with fully-fluorinated networks formed via triazine cross-links, investigated previously, the urethane-linked networks were more readily prepared but were poorer elastomers, were less thermally stable, and were less resistant to swelling by common polar solvents. © 1995 John Wiley & Sons, Inc.     

系列甘露糖醛酸寡糖的制备与鉴定

用酸降解法制备了系列甘露糖醛酸寡糖(聚合度2～8),并分析测定了寡糖的结构. 褐藻胶经部分酸水解,于pH=2.85处分级获得聚甘露糖醛酸. 继续用酸降解法降解聚甘露糖醛酸,经凝胶柱层析分离纯化,获得系列甘露糖醛酸寡糖. 用荧光标记糖电泳(FACE)对寡糖进行了分析,并用电喷雾离子化质谱(ESI-MS)、 核磁共振波谱(NMR)及红外光谱(FTIR)进行了结构表征. 本研究用酸降解法制备饱和甘露糖醛酸寡糖,用凝胶柱层析法分离获得系列聚合度的寡糖,为褐藻胶大分子构效关系研究和药物的筛选与发现提供了重要的基础资料.     

污泥中常规生物指标的检测

介绍了污泥中三种常规生物检测指标,即细菌总数、粪大肠菌群和蛔虫卵的检测方法。污泥中细菌总数的检测采用平皿计数法,先将污泥样品稀释后选取2~3个适宜的稀释度进行培养;污泥中粪大肠菌群的检测采用多管发酵法,分别将稀释后的污泥混悬液接种于乳糖蛋白胨培养基和EC培养液中进行初发酵和复发酵实验;污泥中蛔虫卵的检测采用漂浮法,利用饱和硝酸钠溶液的比重大于蛔虫卵的原理,通过分离、离心、洗涤等步骤将样品中的蛔虫卵集中于载物玻片上镜检计数。文章对污水处理厂检测及排放污泥有一定的指导意义。     

含羧甲磺酰基水暂溶性分散染料的研究──几个中间体及染料的合成

用氯磺化法或硫醚氧化法结合成出８个中间体，并以其作为重氮组分，合成出１０个新的含羧甲磺酰基水暂溶性分散染料。     

对、间位卤代苯甲酸在水-乙醇混合溶剂中电离过程的焓、熵贡献

用LKB-2277Bioactivity Monitor测定了25℃时间氯、对氯和对氟苯甲酸在水-乙醇混合溶剂中的标准电离焓, 计算了相应体系的标准电离熵。利用Hammett方程对溶剂中酸的取代基常数σ进行了计算, 求取了对应的焓、熵取代基常数σH和σS值及熵反应常数ρS, 利用内部-环境模型和上述常数对溶剂效应和取代基效应进行了解释。     

分子三维投影法在苯酚类化合物构效关系研究中的应用

对苯酚类化合物进行三维投影得到了5个形状参数,将其与3个Am指数及8个量子化学参数相结合.由最佳变量子集回归法对变量进行了压缩与选择,运用多元回归分析和人工神经网络法分别构造了预测数学模型,得到了满意的结果.     

CO2加氢合成二甲醚的催化剂的制备

先采用均匀沉淀法制备出CuO—ZnO催化剂,然后以CuO—ZnO催化剂作为晶核采用水热合成法制备出CuO—ZnO／HZSM-5（氢型ZSM-5分子筛）复合催化剂．利用X射线衍射和氨程序升温脱附手段对复合催化剂进行表征,并应用于CO2催化加氢合成二甲醚的反应．研究结果表明,在相同的反应条件下,这种CuO—ZnO／HZSM-5复合催化剂与采用物理混合法制备出的复合催化剂相比具有更好的催化效果,不但提高了CO2的转化率、二甲醚的选择性以及二甲醚和甲醇的总选择性,同时还改善了催化剂的稳定性．     

苯丙烯类葡萄糖氧苷的合成及其抗缺氧活性

以取代苯甲醛(1a~1t)为原料,通过Knoevenagel缩合、酯化和LiAlH₄还原等反应制得苯丙烯醇衍生物(3a~3t);以取代肉桂醛(1u~1x)为原料,经NaBH₄还原制得苯丙烯醇衍生物(3u~3x); 3a~3x与全乙酰化溴代葡萄糖经Koenigs-Knorr偶联反应及MeONa/MeOH体系脱除乙酰保护基反应,合成了24个苯丙烯类葡萄糖氧苷(5a~5x),其中5c,5f ~ 5x为新化合物,其结构经¹H NMR和ESI-MS表征。采用MTT法测定了5对缺氧损伤的内皮细胞(EA.hy926)的抗缺氧活性。实验结果表明： 5b, 5e, 5g, 5p, 5q, 5s, 5t和5y对EA.hy926的抗缺氧活性均高于经景天苷。     

Photophysical,Electrochemical, Thermal and Morphological Properties of Polyurethanes Containing Azomethine Bonding

In this paper, three new low band gap Schiff bases were prepared by using 3-etoxy-4-hydroxybenzaldehyde and different o-phylene diamines. Then, these Schiff bases were converted to low band gap polyurethane derivatives, and their photophysical, electrochemical, thermal, mechanical and morphological properties were investigated. Photophysical properties of the compounds were investigated by using UV-Vis and photoluminescence (PL) spectroscopy. Electrochemical properties of Schiff bases and polyurethanes containing azomethine were investigated by using cyclic voltammetry (CV). Thermal decomposition and transitions were determined by using TG-DTA, DMA and DSC techniques, respectively. Morphological properties of the compounds were also determined by using scanning electron microscopy (SEM). SEM images showed that polyurethanes containing azomethine consist of semi-crystalline particles.     

Preparation and Characterization of Nano-Structured SiO2 Thin Films on Carbon Steel

Nano-structured SiO2 thin films were prepared on the surface of carbon steel for the first time by LPD. The compositions of the films were analyzed by XPS, and the surface morphology of the thin films were observed by AFM. The thin films were constituted by compact particles of SiO2, and there was no Fe in the films. In the process of film forming, the SiO2 colloid particles were deposited or absorbed directly onto the surface of carbon steel substrates that were activated by acid solution containing inhibitor, and corrosion of the substrates was avoided. The nano-structured SiO2 thin films that were prepared had excellent protective efficiency to the carbon.