几种硫代α—二酮配合物液晶的合成

设计了一种简单的合成路线，合成出３种长链对正烷氧基苯偶酰及相应的双二硫代α－二酮合镍（Ⅱ）配合物，并对苯偶酰的液晶性与对应的二硫代配合物的液晶性进行了研究，初步证实了从具有双重熔化现象的有机分析出发合成具有液晶性质的配合物分子这一设想。     

两种新的β—二酮铜（Ⅱ）配合物液晶的合成

目的研究新的β－二酮铜（Ⅱ）配合物液晶的合成及其性质．方法合成两种新的β－二酮：１－对辛氧基联苯基－３－１′－甲基丙基－１,３－丙二酮,１－对壬氧基联苯基－３－１′－甲基丙基－１,３－丙二酮,和它们的铜（Ⅱ）配合物,确定化学结构后,通过偏光显微镜下的相变观察及ＤＳＣ测定,确定配体和配合物的液晶相态．结果两种β－二酮配体呈现ＳＡ相液晶,而两种配合物呈现单变Ｎ液晶．结论双［１－对烷氧基联苯基－３－１′－甲基丙基－１,３－丙二酮］合铜（Ⅱ）的β－二酮配体３位异丁基使配合物表现出单Ｎ液晶态．     

一类新型甘脲的合成

在碱的乙醇溶液中分别由苯偶酰和硫脲、4,4’-二甲氧基苯偶酰和硫脲为原料合成了两种新瓜环单体——硫代甘脲,并利用^1H NMR,^13C NMR,MS等方法对产物进行表征,表明产物为目标产物。还考察了2,3-丁二酮,3,4-己二酮,乙二醛等与硫脲的反应。     

带端烯基偶氮苯液晶化合物与钯（II）配合物的合成和表征

合成了一种新的带端烯基偶氮苯液晶化合物（ＡｚｏＣ５Ｃ６）及其与钯（Ⅱ）的配合物，用元素分析，紫外光谱和红外光谱等进行了表征。     

带端烯基偶氮苯液晶化合物与钯(Ⅱ)配合物的合成和表征

合成了一种新的带端烯基偶氮苯液晶化合物（ＡｚｏＣ５Ｃ６）及其与钯（Ⅱ）的配合物，用元素分析，紫外光谱和红外光谱等进行了表征     

含手性基团的β—二酮及其铜（Ⅱ）配合物的合成

目的研究含手性基团的β－二酮及其铜（Ⅱ）配合物的合成及其性质．方法合成三种新的含手性碳原子的β－二酮,１－对辛（壬、癸）氧基联苯基－３－３′－甲基戊基－１,３－丙二酮,及它们的铜（Ⅱ）配合物．确定化学结构后,通过在偏光显微镜下进行相变观察以及作ＤＳＣ分析,研究β－二酮及其铜（Ⅱ）配合物的相态变化．结果三种β－二酮配体均呈现双变Ｓ相液晶,而它们的铜（Ⅱ）配合物却没有表现出液晶性质．结论随着１－对烷氧基联苯基－３－３′－甲戊基－１,３－丙二酮配体的３位基团增大,它们的铜配合物的液晶性质消失．     

一种含有磺酸基螯合型热致性主链液晶离聚物的合成及性能分析

以对苯二甲酸二-(4-羧基苯)酯为液晶基元,己二醇为柔性间隔基,通过共缩聚反应合成了液晶离聚物.并通过红外光谱(FTJR)、差示扫描热分析(DSC)以及偏光显微镜(POM)对各步产物进行了初步的分析及表征,结果表明,所合成的液晶离聚物具有液晶特征.     

二茂铁基长链烷基β-二酮镍(Ⅱ)配合物的合成及其液晶行为研究

以二茂铁基长链烷基β－二酮为配体与醋酸镍反应，合成了五个新的二茂铁基长链烷基β－二酮镍（Ⅱ）配合物，经元素分析、红外光谱、核磁共振氢谱、质谱和热分析，确定配合物的组成为ＮｉＬ２·２Ｈ２Ｏ（Ｌ＝Ｃ５Ｈ５ＦｅＣ５Ｈ４ＣＯＣＨＣＯＣｎＨ２ｎ＋１，ｎ＝５～９，对应配合物Ⅰ～Ⅴ）．采用热台偏光显微镜和ＤＳＣ方法研究了配合物的液晶行为，发现这五个含混合金属铁／镍的配合物，具有热致液晶性．     

含偶氮介晶基元的环氧化合物的合成

为了制得一种新型液晶环氧树脂,合成了一种含偶氧介晶基元的环氧化合物,研究了反应物配比对产物结构的影响,利用红外光谱、紫外光谱、核磁共振氢谱、示差扫描热分析和元素分析等手段确认了其结构,并给出了适合偶氮环氧体系的平均相对分子量测定方法。正交偏光场观察显示４,４’－二缩水甘油醚偶氮苯与４,４’－二氨基二苯甲烷的固化过程出现了从各向同性到各向异性的转变,产物为液晶有序的不溶不熔的环氧树脂。     

一种新型含二茂铁基三角架配体的合成与表征

近年来,杂氮三角架型化合物及其过渡金属配合物的合成引起了人们的广泛兴趣［１,２］,三角架配体与金属离子形成的配合物具有高度的热力学稳定性和动力学惰性,并且该类配体能作为合成许多大环化合物的前体物质．二茂铁基团由于具有芳香性、可逆的氧化还原性、稳定性及低毒性,其衍生物在聚合物、电化学、医学等领域有着广泛的应用．将二茂铁基引入不同的分子,以期得到新的具有特殊性能的化合物是近年来研究的热点［３,４］．通过二茂铁甲酰肼与三角架醛的缩合反应,得到一种新型三角架配体三｛［２（２苯甲醛二茂铁甲酰腙）氧代…     

含能配合物M（ATZ）·nH2O液相生成反应的热动力学研究

在水溶液中合成了5种固态含能配合物M（ATZ）·nH2O（M=Mn,Ni,Zn,n=6;M=Co,Pb,n=3;ATZ=5,5’-偶氮四唑）,并对它们进行了表征。用RD496-CK2000微热量计测定了298．15K下各配合物的液相生成反应焓变△rHm^θ。均为负值,有利于目标物生成;并改变反应温度,研究了它们的液相生成反应的热动力学。     

Review on aggregation of acid extractants in solvent extraction of metal ions: remark on the general model

The aggregation behavior of various acid extractants in the solvent extraction systems of metal ions is re-examined and explained according to knowledge obtained in recent work. The conclusions are as follows. (1) Complexes formed by the extractants and metal ions can form reversed micelles in organic diluents, depending on the microstructures of the complexes. The dimers of the acid extractant cannot percolate to the metal-extractant aggregates, and the acid-salt complexes are always formed in the aggregates. The reversed micelles or the W/O microemulsions formed by different species cannot be associated with each other to form a unified aggregate. (2) In solvent extraction systems, hydration of the extractants and metal ions can be considered as the driving force of forming reversed micelles. (3) Information of the first approach to the insight of the bicontinuous microemulsion of NaDEHP shows that various components in the aqueous phase behave confined and very similar to the typical AOT/n-heptane W/O microemulsions. (4) In the extraction of lanthanide ions by the W/O microemulsion of sodium naphthenate, the saponification is a process of forming reversed micelle or W/O microemulsion, while the extraction step is a process of destroying reversed micelles or W/O microemulsion droplets.     

A light-harvesting siphonax-anthin-chlorophyll a／b-protein complex of marine green alga, Bryopsis corticulans

A light-harvesting chlorophyll a/b-protein complex (LHCP) was isolated directly from thylakoid membranes of marine green alga, Bryopsis corticulans, by two consecutive runs of liquid chromatography. The trimeric form of the light-harvesting complex has been obtained by sucrose gradient ultracentrifugation. The result of SDSPAGE shows that the light-harvesting complex is composed of at least five apoproteins in which a protein with apparent molecular weight of about 31 kD was never found in the major light-harvesting complex (LHC II ) from higher plants. The isolated Bryopsis corticulans light-harvesting complex contains a specific carotenoid, siphonaxanthin, as well as chlorophyll (Chl) a, Chl b, neoxanthin and violaxanthin. Siphonaxanthin which is present in the light-harvesting siphonaxanthin-chlorophyll a/b-protein complex of Bryopsis corticulans is responsible for enhanced absorption in the blue-green region (530 nm). Efficient energy transfer from both siphonaxanthin and Chl b to Chl a in Bryopsis corticulans LHCP, which has similar absorption and fluorescence emission spectra to those of the lutein-chlorophyll a/b-protein of higher plants, proved that molecular arrangement of the light-harvesting pigments was highly ordered in the Bryopsis corticulans LHCP. The siphonaxanthin-chlorophyll a/b-proteins allow enhanced absorption of blue-green light, the predominant light available in deep ocean waters or shaded subtidal marine habitats.     

复方中药抗疲劳液对运动小鼠抗疲劳效果的实验研究

以昆明种雄性小鼠为实验对象,研究复方中药抗疲劳液对游泳小鼠的抗疲劳效果.结果显示,血红蛋白、血乳酸、乳酸脱氢酶、血尿素、丙二醛和超氧化物歧化酶等测试指标的浓度和活性,与各自对照组相比均呈高度显著性差异(P＜0.01),说明该复方中药的抗疲劳效果是非常显著的.     

硅油基复合磁流体稳定性的影响因素

为了提高硅油基复合磁流体的稳定性,用化学法制备的纳米Co,Fe3O4微粒,经表面活性剂改性后再用过渡液进行复合包覆,借助超声分散和机械分散手段将其分散在硅油中,解决了磁微粒的团聚问题,得到了透光率低于2.5%的稳定分散体系--硅油基Co/Fe3O4超顺磁性复合磁流体.经振动样品磁强计测定,其饱和磁化强度达106.2 mT.分析了磁微粒与硅油形成稳定分散体系的条件及其影响因素.分析结果表明:影响磁微粒与硅油形成稳定分散体系的主要因素有磁微粒粒径的大小;表面活性剂、过渡液的用量及分散的方式.     

席夫碱型钯(II)配合物液晶的合成与表征

合成了带有端烯基的席夫碱型配体 (Schiff_C11C10 )及其含氯桥型的钯 (II)配合物 (Schiff_C11C10 _Pd) ,通过元素分析 ,摩尔电导 ,红外光谱 ,电子光谱 ,核磁共振等进行了表征 .配合物为中性配合物 ,配体与Pd(II)的摩尔比为 1∶1.配体和配合物均为热致型液晶 .配体和配合物介晶相皆为近晶相 ,配体的液晶态初步判定为镶嵌状织构 ,配合物的液晶态为破扇状织构 .     

卵磷脂-卟啉类金属络合物的导电性能及其结构变化

本文报道作者用SAXS对卵磷脂-卟啉类金属络合物制成的液晶-导电玻璃电极的研究结果。实验表明,卟啉类金属络合物与卵磷脂混合形成一种液晶态物质,涂在电极表面可形成液晶态膜,改变了原有电极的电性能,可比未涂这类液晶物质的电解产生的电势差明显提高。     

酯与离子液体[bmim]BF_4二元双水相体系金属镉(Ⅱ)的萃取分离及测定

Cd(Ⅱ)与碘化钾形成离子化合物CdI_42-,与罗丹明B结合形成离子缔合物(RhB)2(CdI_4),此缔合物在一定条件下,可采用酯与离子液体[bmim]BF4二元双水相体系从目标混合物中实现高效萃取分离,方法用于测定天然水中重金属Cd(Ⅱ)的含量,检测限3.16×10-7mol/L.研究了试剂用量对三元缔合物形成的影响以及温度和酸度对离子液体-双水相萃取体系的影响,得到了Cd(Ⅱ)、KI、RhB三元缔合物(RhB)2(CdI_4)的最佳生成条件以及二元双水相体系的最佳萃取条件.     

Influence of gravity on narrow input forced drainage in 2D liquid foams

Liquid foam is a dense packing of gas bubbles in a small amount of liquid containing surfactants or other surface-active macromolecules, which is one of the highly organized materials and possesses hallmark rheological behaviour of soft matters. Forced foam drainage is the flow of constantly inputted liquid through the network of interstitial channels between bubbles under actions of gravity and capil-larity. This process involves two mechanisms: minimal viscous flow dissipation of liquid and minimal surface energy of bubbles. For constant surfactant solution, viscous dissipation usually varies with gravity. This work reports simulations of 2D forced foam drainage with narrow input in a Hele-Shaw cell under 8 different gravities, g, ranging from 9.8 to 0 ms?2. The spread of liquid both vertical due to gravity action, and horizontal due to capillary suction, is recorded over time. Positions of drainage wave fronts in both directions with time are found to be well described in the power law form, and the exponents are 0.536 5.29×10-3g and 0.479?7.27×10-3g, respectively, while the sum is close to a constant of 1.015 which is independent of gravity. For g=9.8 ms-2, the calculated exponents are in good agreement with experimental results by Hutzler et al. and Wang.     

薄膜反馈节流液体静压轴承模糊优化设计

依据模糊率方法学的基本思想和方法 [1 ] ,对薄膜反馈节流液体静压轴承采用复合形法进行模糊优化设计 ,其优化结果与按常规设计的静压轴承相比较 ,可定量处理模糊性的因素 ,保证设计对象具备最佳性能 ,设计过程大为简化 ,且效率高、精度好