Cu（Ⅱ）NEAE和Cu（Ⅱ）NACN的NIR FT－SERS光谱研究

用沉积银胶的银镜作活性载体，获得了中位－四－（４－Ｎ－乙氧羧甲基吡啶）卟啉络铜（Ⅱ）（Ｃｕ（Ⅱ）ＮＥＡＥ）、中位－四－（４－Ｎ－氰甲基吡啶）卟啉络酮（Ⅱ）（Ｃｕ（Ⅱ）ＮＡＣＮ）的近红外富里叶变换－表面增强喇曼光谱（ＮＩＲＦＴＳＥＲＳ），对其谱峰位移作了归属，并与它们的可见激光表面增强共振喇曼光谱（ＳＥＲＲＳ）作了比较。     

中位-四(4-N-甲氧羰甲基吡啶)卟啉镍配合物的表面增强拉曼光谱研究

研究了季铵盐型的中位-四(4-N-甲氧羰甲基吡啶)。卟啉(H_2T_(rNEAMS)PyP(4))及其镍配合物(NiT_(rNEAMS)PyP(4))的共振拉曼光谱和表面增强拉曼光谱,对其拉曼特征频率作了经验归属,并研究了溶液酸度对拉曼光谱的影响.实验结果表明,该配合物随着溶液酸度的变化,具有不同的存在形式,且彼此保持一定的平衡关系。     

中位—四（4—N—氰甲基吡啶）卟啉—铜（Ⅱ）络合物及其与脱氧核糖核酸…

本文在银胶活性基质上获得了Ｃｕ（Ⅱ）的中位－四（４－Ｎ－氰甲基吡啶）卟啉络合物Ｃｕ（Ⅱ）ＮＡＣＮ的表面增强喇曼光谱光谱，并与其ＲＲＳ光谱作了比较，讨论了ＰＨ值和Ｃｕ（Ⅱ）ＮＡＣＮ的复合物的ＳＥＲＳ光谱的影响，研究了小牛胸腺双链ＤＮＡ及其变性ＤＮＡ与Ｃｕ（Ⅱ）ＮＡＣＮ的复合物的ＳＥＲＳ光谱，指出Ｃｕ（Ⅱ）ＮＡＣＮ是通过吡啶氮和卟啉核共同与银胶作用的，Ｃｕ（Ⅱ）ＮＡＣＮ是斜向吸附在银表面上的，最佳ＰＨ     

5-氯四唑银配合物的 ab initio 研究

用ａｂｉｎｉｔｉｏＭＯ法计算了６种氯代四唑银的配合物模型，结果表明，π型配合物难以存在．在σ型配合物中银的配位使四唑环上单键增长、体系更不稳定．环Ｎ（２）（或Ｎ（３））原子较Ｎ（１）（或Ｎ（４））原子易于与金属成键；Ｎ（２）型配合物较Ｎ（１）型配合物稳定．预示５氯四唑银配合物将以２∶１（配体：金属原子）Ｎ（２）型为主．     

CTAB对四-(4-N-甲基吡啶)卟啉SERS谱的影响

研究了阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)对四-(4-N-甲基吡啶)卟啉(H2TMPyP)及其银配合物(AgTMPyP)在Ag胶中的表面增强拉曼散射(SERS)谱的影响.SERS光谱表明,吸附于Ag胶粒的H2TMPyP与衬底银原子结合形成AgTMPyP,加入CTAB后,部分AgTMPyP表面络合物还原为H2TMPyP.相似的去金属化反应也出现在AgTMPyP/Ag胶/CTAB体系中.CTAB的加入使SERS谱带强度明显增加.AgTMPyP的去金属化被认为是由于CTAB的存在使Ag胶颗粒表面附近微环境发生改变.     

碘化银胶体上四苯基卟啉金属配合物的表面增强拉曼光谱研究

研究了四苯基卟啉金属配合物（MTPP,M=Ag,Mg,Cu,Pd）在AgI胶体上的表面增强拉曼光谱（SERS）。结果显示MgTPP与基底发生金属交换生成AgTPP,而在PdTPP和CuTPP上则未发现金属交换。除卟啉环的振动外,一些苯环振动带也被显著增强。在1400～1600cm-1范围,PdTPP和CuTPP的SERS与AgTPP有很大差别,可能反映了吸附分子在次甲基桥碳原子Cm附近立体构型的差异。     

吸附于银胶颗粒表面的胆红素及胆绿素分子吸附取向研究

胆红素、胆绿素作为重要的生物小分子被广泛研究。本文采用表面增强拉曼光谱技术获得了胆红素和胆绿素分子吸附于银胶颗粒表面的拉曼光谱。通过对其谱带的指认分析,表明胆红素形成了三对内氢键,并以其两个吡咯亚甲基酮环沿银胶颗粒表面切向方向镶嵌在银胶颗粒上,而胆绿素则以顺式－顺式－顺式构型平躺吸附于银胶颗粒表面。     

金属四苯基卟啉在氧化银和银胶体上的表面增强拉曼光谱研究(英文)

研究了四苯基卟啉金属配合物 (MTPP ;M =Ag ,Cu ,Pd ,Mg)和游离碱 (H2 TPP)在氧化银和银胶体中的表面增强拉曼光谱 (SERS) .在Ag2 O胶体中MTPP和H2 TPP的SERS谱与其普通拉曼谱明显不同 ,可知吸附分子在Ag2 O胶粒表面发生反应所引起 ,况且产物于 4 6 0nm附近有一强烈吸收 ,可知它含有共扼双吡咯发色团 .在OH- 修饰的银胶上也观察到类似的光谱变化 .     

具二阶非线性光学性质的两亲性半菁稀土配合物的研究

合成了４种含半菁的新型稀土配合物：四（１－苯基－３－甲基－４－苯甲酰基吡唑啉酮－５）合稀土（Ｌａ，Ｎｄ，Ｄｙ，Ｙｂ）酸（Ｅ）－１－十六烷基－４－（２，４＇－二甲氨基苯基）乙烯基吡啶，用元素分析，紫外可见光谱，红外光谱，核磁共振谱，差热热重谱，Ｘ射线光电子能谱，Ｘ射线粉末衍射和摩尔电导对配合物进行表征。研究了４个配合物的空气－水（１８℃，ｐＨ＝５．６）界面上的表面压－面积（π－Ａ）等温线行为和镝配合     

铜（Ⅱ）－4－（吡啶－2′－甲基）－1，4，7，10－四氮杂环十三烷－11，13－二酮－α－氨基酸（5－取代邻菲罗啉）三元配合物的稳定性研究

用ｐＨ法在２５．０±０．１℃，Ｉ＝０．１ｍｏｌ·ｄｍ－３ＫＮＯ３条件下，测定铜（Ⅱ）－４－（吡啶－２′－甲基）－１，４，７，１０－四氮杂环十三烷－１１，１３－二酮－α－氨基酸（５－取代邻菲罗啉）三元配合物的稳定常数；比较了带吡啶甲基二氧四胺大环配体和二氧四胺大环配体与Ｃｕ（Ⅱ）的配位能力、配位方式；研究了该三元体系配合物稳定性与配体α－氨基酸酸碱强度之间的直线自由能关系；探讨了Ｃｕ（Ⅱ）和５－取代邻菲罗啉之间的ｄ－ｐ反馈π键以及邻菲罗啉取代基Ｈａｍｍｅｔｔ诱导效应与该三元配合物稳定性之间的关系。讨论了４－（吡啶－２′－甲基）－１，４，７，１０－四氮杂环十三烷－１１，１３－二酮和４－（喹啉－２′－甲基）－１，４，７，１０－四氮杂环十三烷－１１，１３－二酮与Ｃｕｘｐｈｅｎ所形成配合物的不同空间结构及其对配合物稳定性产生的影响。     

Dichroism of absorption and polarization of phosphorescence of molecules of the closed form of nitrobenzospirothiopyran

The spectral-polarization characteristics of absorption and phosphorescence of molecules of the initial form of nitro-substituted indolinospirobenzothiopyran were studied in oriented polyethylene films and in solutions with different polarity. An oscillator model of the electron transitions responsible for the formation of absorption and luminescence spectra was suggested. It was established that the principal differences in the spectral and photophysical properties of the compound studied and its oxygen-containing analog are associated with the fact that the electronegativity of the S atom is lower than that of the O atom. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1143–1146, June, 1997.     

非那雄胺合成工艺改进

非那雄胺能抑制5α-还原酶的活性,明显降低二氢睾酮水平,是一种治疗良性前列腺增生的有效药品。该合成工艺以甾烯酮酸为原料,将其与氯化亚砜反应,无须分离即与叔丁胺反应得17β-酰胺化合物,再氧化开环,环合,氢化,脱氢合成了非那雄胺。经元素分析、IR、1HNMR、13CNMR、MS分析表征了其结构。该法无须使用昂贵的2,2-二吡啶二硫化物和剧毒药品苯亚硒酸酐,且以乙酸铵代替氨气,降低了对设备的要求和腐蚀,更适用于工业生产。     

Acid hydrolysis of carboxymethylcellulose of low degree of substitution

Cotton cellulose was swollen in a sodium hydroxide solution and carboxymethylated by a two-bath method for different periods of time for each process. The kinetics of acid hydrolysis and the crystallinity of the swollen and carboxymethylated samples were measured. The proportion of broken bonds, rate constants for hydrolysis, and permeability of cellulose to hydrolyzing agents were calculated. The susceptibility of glycosidic linkages to acid hydrolysis was improved by carboxymethylation more than by swelling in alkali. The increased accessibility of carboxymethylcellulose to acid was regarded as a consequence of increased intra-and intercrystalline swelling and of the glycosidic bonds' weakness caused by the electron-attracting carboxymethyl group on the C-6 position.     

氯氧化镁生成热的研究

用氧化镁氯化镁水溶液制备了8水合氯氧化镁[nMg(OH)2·MgCl2·8H2O], 并测定了其在盐酸中的溶解热, 实验结果表明, 氯氧化镁溶解热与n值呈线性关系, 根据溶解热求出5Mg(OH)2·MgCl2·8H2O和3Mg(OH)2·MgCl2·8H2O的生成热分别为-7727.1和5888.1kJ·mol^1^-。     

Determination of heats of detonation and influence of components of composite explosives on heats of detonation of high explosives

The heats of detonation of 20 simple high explosives and explosive mixtures were determined by means of an adiabatic detonation calorimeter designed by the authors. The results indicated that the performance of the instrument was reliable and the experimental data were very accurate. For explosive mixtures, there was a linear accumulative relationship between the heats of detonation of the explosive mixture and its components. Accordingly, the heats of detonation of explosive mixtures could be calculated directly from the heats of detonation of simple explosives and the characteristic heats of other components. The experiments showed that the gold or brass shell of the cylindrical charge could be substituted by a thick-walled porcelain shell, which had the advantage of cheapness.

     

Estimation of Kinetic Parameters of Thermal Oxidation of Ilmenite

The aim of the presented work was the investigation of thermal oxidation of ilmenite in static air atmosphere. The investigations were carried out by use of a derivatograph (MOM, Hungary). The changes of crystallographic structure of investigated samples were identified by X-ray diffractometry on Philips PW-1710 diffractometer. In temperature above 500°C appears structure of hematite Fe₂O₃. On the basis of the thermogravimetric measurements, the contracting area and contracting volume models were found as the best fitting experimental data. This revised version was published online in August 2006 with corrections to the Cover Date.     

Mechanism of action of base-catalyzed oxygenation of phenol derivatives

Cyclopropyl derivative of 2,6-di-tert-butylphenol is synthesized as a probe to investigate the mechanism of base-catalyzed autooxidation of phenol derivatives. Our study indicates that one electron reduction of molecular oxygen from phenolate gives phenoxyl radical 3, a key intermediate of autooxidation. The coupling of phenoxyl radical and superoxide radical gives peroxylate anion 4 and produces the final epoxy alcohol adduct 6.     

Synthesis of phenolic components of Grains of Paradise

Two vanilloids, (5E)-8-(4-hydroxy-3-methoxyphenyl)oct-5-en-4-one (1) and 4-[3-hydroxydecyl]-2-methoxyphenol (2), isolated from the dried seeds of Grains of Paradise (Aframomum melegueta), were synthesized; the latter compound was made as the S-enantiomer and the material derived from the seeds was found to be a 1:1.7 mixture of the R and S isomers. The synthetic route used should allow the preparation of analogs having extended alkyl chains and consequently different lipophilicity, and 3, a homolog of 2, was also prepared.     

化学计量中不确定度评定研究进展

测量不确定度是表征合理地赋予被测量之值的分散性的参数。本文针对化学计量不确定度评定基础模型仅适用于线性模型、概率分布为正态分布或缩放位移t分布等局限,介绍了近年来不确定度评定的研究热点:蒙特卡罗方法(Monte Carlo Method,MCM),不确定度评定的来源、评定概念、评估方法及其发展过程,扩大了测量不确定度评定与表示的适用范围。     

微量钙的测定方法研究进展

介绍了1995-2006年期间测定微量和痕量钙的方法,如电感耦合等离子体-原子发射光谱法、原子吸收光谱法以及离子色谱法等的工作原理和特点,并说明了其测定微量钙的应用领域。并对微量钙的测定技术进行了展望(引用文献55篇)。