N,O-羧甲基壳聚糖与镨配合物的制备

用羧甲基壳聚糖与硝酸镨反应,制备了羧甲基壳聚糖-镨稀土配合物。用红外光谱、X-射线光电子能谱(XPS)和扫描电镜等分析测试手段对配合物进行表征。讨论了时间和溶液的酸度对配合物形成的影响。对羧甲基壳聚糖-镨配合物配位机理进行了初步的研究,羧甲基壳聚糖-镨配合物中羧甲基壳聚糖中不仅羧基参与了配位,氨基上的氮原子和羟基氧原子也参与了配位。羧甲基壳聚糖-镨配合物和羧甲基壳聚糖相比,表面结构疏松。     

羧甲基壳寡糖与镧配合物的制备

用羧甲基壳寡糖与硝酸镧反应,制备了羧甲基壳寡糖与稀土镧的配合物。用红外光谱、差示扫描量热法(DSC)等分析测试手段对配合物进行表征。讨论了溶液的酸碱度、反应时间和物料比对配合物形成的影响。对羧甲基壳寡糖镧配合物配位机理进行了初步的研究,羧甲基壳寡糖镧配合物中的羧甲基壳寡糖不仅羧基参与了配位,氨基上的氮原子和羟基氧原子也参与了配位。羧甲基壳寡糖镧配合物和羧甲基壳寡糖相比,热稳定性有所增加。     

苯并咪唑类镍金属配合物的研究进展与应用

简要介绍了苯并咪唑类配合物中的镍金属配合物,对苯并咪唑类镍金属配合物在医药工业、材料化学、催化化学、原子能以及有机合成等领域的研究进展和应用进行了综述,并对未来发展趋势进行了展望。     

2,3,5-吡啶三酸与稀土铕配合物的合成及发光性质

采用水作溶剂,用2,3,5-吡啶三酸与稀土铕的氯化物反应合成了一种配合物,通过EDTA络合滴定分析,确定了配合物中铕离子的含量;并对配合物进行了熔点、红外光谱测定,测试了固态铕配合物的荧光激发和发射光谱。结果表明,该配合物具有良好的光致发光性质。     

烟酰肼-5-溴水杨醛与镁金属配合物的合成与表征

以乙醇作溶剂,合成了5-溴水杨醛烟酰腙配体化合物,同时制备了5-溴水杨醛烟酰腙与Mg（Ⅱ）的金属配合物。利用元素分析、红外光谱、紫外光谱法对配体及配合物进行了表征,并对配体和配合物的荧光性质进行了初步研究。     

3,5-二硝基苯甲酸钐与1,10-邻菲罗啉配合物的合成、性能及与小牛胸腺DNA作用研究

以3,5-二硝基苯甲酸(HL)和1,10-邻菲罗啉(Phen)为配体,采用溶液合成法合成了一种钐配合物。通过元素分析、配位滴定、摩尔电导率、红外光谱和紫外光谱法确定了配合物的组成为Sm(L)3phen。利用热分析、电化学手段对配合物的热稳定性、电化学性能进行了分析。应用粘度法对配合物与小牛胸腺DNA的相互作用进行了研究。结果表明,钐配合物和DNA相互作用是插入模式。     

β2-Keggin结构稀土元素钨砷杂多配合物的合成与表征

采用直接法合成了8种稀土元素取代的钨砷杂多配合物,通过ICP和TG曲线确定了其化学式为K11[Ln(AsW11O39)2].xH2O,采用IR、UV、XRD1、83WNMR等方法对配合物结构进行了表征,结果表明合成配合物为β2-Keggin结构。TG-DTA分析对合成配合物的热稳定性考察表明,配合物在515~545℃分解。     

水杨醛缩氨基硫脲配合物与牛血清蛋白的弱相互作用研究

本文合成了水杨醛缩氨基硫脲席夫碱配体并与锰、镉金属离子进行配位反应,合成了两种配合物。并通过红外光谱图分析,对配体及配合物的做了表征,分析了配合物可能存在的结构。选用荧光光谱法对席夫碱及其配合物和牛血清蛋白的弱相互作用进行了研究分析,结果表明该配体及其金属配合物与牛血清蛋白形成了基态复合物,引起了牛血清蛋白内源荧光猝灭现象,而具体何种荧光猝灭还有待进一步研究。     

八种具有荧光性能的新型配合物的合成与性能研究

设计并合成了8种新的具有荧光性能的反式2-[(4′-二乙氨基)苯乙烯基]吡啶配合物。用元素分析、红外光谱、紫外光谱等方法对配合物进行了表征,并对配合物的溶解性、热稳定性和荧光性能进行了研究。结果表明,这8种配合物都有较强的荧光性能,适合掺入涂料中做成荧光涂料。     

牛磺酸配合物的合成与应用研究进展

牛磺酸具有广泛的生理药理作用,但是它作为一种配体与阳离子进行配位的报道却很少。从牛磺酸的配位化学角度出发,论述了牛磺酸金属配合物和牛磺酸席夫碱金属配合物的合成方法,并且对牛磺酸配合物的应用进展作了简要综述。     

Characterization of Europium Complex-doped PMMA and PMMA-EVA Polymer Networks

Europium-β-diketone chelate doped poly(methyl methacrylate) and poly(methyl methacrylate)/poly(ethylene co-vinyl acetate) blends have been successfully prepared and characterized. The mechanical properties of the PMMA-EVA systems have been assessed in terms of tensile strength and impact strength. The thermal characteristics and the energy involved in thermal decomposition have been studied. The structural properties of the complex doped polymeric systems reveal that the complex exists in the same crystalline state in the doped systems as it does in the pure state. The orientations of the groups in the host matrix have been found to be affected by the complex loading. The optical properties of the system have been studied by photo luminescence spectroscopy. The fluorescence lifetime have been observed to decrease at greater loadings of the complex; an effect that has been attributed to concentration quenching. The complex doped PMMA/EVA polymer network developed is considered to be a potential candidate for the development of optoelectronic devices those possess superior mechanical properties.     

[Ce(LA)_2(NO_3)_3]的晶体结构、抗肿瘤活性以及与DNA作用研究

以鹅掌楸碱为配体与稀土金属铈反应合成配合物[Ce(LA)_2(NO_3)_3],通过X-射线单晶衍射对该配合物进行结构表征,并对其进行肿瘤细胞的体外抑制活性筛选。采用紫外-可见光谱、粘度实验研究该金属配合物与DNA的作用机制。     

一种新方法合成邻氰基苯甲酰胺镧

本文采用邻苯二甲酰亚胺和三乙酰丙酮镧为原料 ,在 N2 保护下 ,以硼酸为催化剂 ,用简单方法合成了新型荧光配合物邻氰基苯甲酰胺镧 ,经元素分析 ,红外光谱、紫外光谱、荧光光谱确定了配合物的组成、结构     

壳聚糖-分子筛复合物选择性吸附卷烟烟气中挥发性羰基化合物的应用研究

制备了壳聚糖-分子筛复合物,并使用扫描电镜观测了复合物的微观形态.研究了分别添加壳聚糖-分子筛复合物、4A分子筛及壳聚糖等材料的卷烟复合滤咀对主流烟气中低分子醛酮类化合物的吸附效果.研究结果表明,添加了壳聚糖-分子筛复合物、4A分子筛及壳聚糖的卷烟滤咀对主流烟气中低分子醛酮类化合物均有较好的吸附作用.且对焦油、烟碱量无明显影响;壳聚糖-分子筛复合物(添加量为2.4 mg·mm-1)对主流烟气中醛酮类化合物的吸附能力优于其它2种材料,该复合物对一氧化碳有一定的吸附,且对抽吸品质有改善,口感柔和,烟气刺激性降低.     

Calculation of ethylene region of chemical technological complex for processing of cracking and pyrolysis gases

To create a chemical-technological complex for the joint processing of cracked gases and pyrolysis gases, the technique of its design was developed. Based on the design capacity of the pyrolysis and cracking units, mass flows of cracked gases and pyrogas entering the chemical-technological complex have been calculated. A scheme has been developed for the proposed complex. To reduce the dimension of the design task, the whole complex was divided into a separate region. Based on the stoichiometric and kinetic models, the calculation of material balances for all processes included in the largest ethylene region has been carried out. The technological parameters were taken from the operated industrial units and processes on the stage of design. The industrial productivity of reactor elements by the targeted products has been determined.     

Adsorption of silver complexes on carbon from aqueous solution

The adsorption of silver diammine complex on graphitized carbon black has been studied in aqueous ammonia solution. The carbon black has been gasified to various levels of burnoff in order to increase its active surface area (ASA). The effect of different parameters, ASA, concentrations of silver diammine and of ammonium cations on the silver adsorption has been investigated. The metal complex interacts specifically with the active sites located in the ASA where it undergoes a reduction to metallic silver. A phenomenological model of the adsorption and decomposition reactions of the silver complex is proposed.     

Investigations on kinetics of decomposition of chromium complex dyes of 1:2 and 1:1 types

The use of calcium hydroxide for decomposing chromium complex dyes in alkaline solution has been examined. Kinetic investigations have been carried out using chromium complex dyes of both 1:2 and 1:1 types, prepared by coupling 4-chlor-2-aminophenol-5-sulphonamide with 4-acetylamino-1-naphthol.The influence of the pH of the reaction solution, the temperature and the concentration of substrates on the course of the reaction and its yields has been observed.Kinetic investigations of the decomposition reactions of the dyes show their dependence on temperature; a rise of 10°C results in a fourfold increase in the rate constant.It has been found that the decomposition reaction of 1:1 chromium complex dyes is second order with respect to the dye, whereas decomposition of the 1:2 complex dyes occurs according to half-order reaction kinetics.     

Kinetics and photoeffects of oxidation and reduction of hexaamminecobalt complex in alkaline media

Cyclic voltammograms of hexaamminecobalt complex have been measured in high pH solutions. The spectroscopic result suggested that hydroamminecobalt complex adsorbed on the electrode surface during cathodic polarization, and this species grew to form cobalt hydroxide after a long time of electrolysis. In the anodic process, the reaction orders for pH and NH₃ were both |1|. Based on these results, the reaction mechanism has been discussed.The effect of light on the electrode process has been studied by irradiating with ultraviolet light of the 254 nm mercury resonance line. It has been indicated that the hydroxoammine complex is decomposed to cobalt hydroxide and free ligand under light.     

铽-柠檬酸-1,10-菲罗啉三元配合物的合成

合成了稀土铽的柠檬酸、1，10－菲罗啉三元配合物，用元素分析，红外光谱，热重分析对配合物进行了表征，并测定了其荧光光谱。结果表明，这是一种发光效率很高的稀土配合物。     

Moisture sorption of polyelectrolyte complex between poly(acrylic acid) and poly(4-vinylpyridine)

Successive differential sorptions have been measured for the system polyelectrolyte complex of poly(acrylic acid)/poly(4-vinylpyridine) + water vapor. The sorption data revealed that the sorption process of water vapor in the complex is controlled not only by diffusion mechanism but also by relaxation mechanism of polymer chains. It has been considered that the complex is composed of a loosely crosslinked, slightly ionized, and relatively homogeneous network structure. The sorption–desorption kinetics have also been investigated for the region of intermediate and high vapor pressures. The interval sorption–desorption curves demonstrated that the complex has the nature of the hysteresis effect in sorptions. It has been concluded that the appearance of sorption hysteresis is due to the depression of mobility of polymer chains resulting from crosslinks between carboxyl groups and pyridine rings.