• 最后估算了冠醚分子络合碱金属离子结合能

    Thirdly, the binding energy of a crown-ether molecule complexing with an alkali-metal ion is estimated.

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  • 讨论了苯环不同取代基对各碳化学位影响

    The influences of benzine ring's different sub-stituets on the chemical shifts of crown's carbons are also discussed.

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  • 论文主要包括以下三个部分研究工作离子液体的合成。

    This paper contains the following three part research work: Synethsis of crown ether-based ionic liquids.

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  • 2-复合物优势构象的示意图(298.15K

    Fig. 2 Optimized structures for Li+ complexes with substituted crown others (298.15 K, gas phase)

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  • 综述液晶纳米管水溶性芳烃分析化学应用进展

    The recent progress of application of liquid crystalline crown ethers, carbon nanotube and water-soluble calixarene on analytical chemistry was reviewed.

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  • 概述冠醚高分子环糊精高分子性质环境科学中的应用现状。

    And the properties and application in environmental science of crown ethers, polymerized crown ethers and Cyclodextrin Containing polymer were reviewed in this paper.

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  • 近几年来手性大环化合物合成应用研究进展作了较为全面的综述

    This is an overall review about the development of synthesis and applications of chiral crown ether compounds.

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  • 此外比较几种不同冠醚高氯酸乙腈反应热力学性质

    Comparisons were also made on the thermodynamic properties for coordination reaction of lanthanum perchlorate with dibenzo-18-crown-6 and with other crowns in anhydrous acetonitrile, respectively.

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  • 实验基础提出了苯并氮杂冠醚化合物氯仿中的-铵盐交换作用机制

    Based on experiments, a reaction mechanism for ce in CDCl_3 - "tertiary amine-tertiary amino salt exchange" was proposed, which has successfully explained the Dilution Shift Effect.

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  • 研究结果表明萃取中子活化较好地用于岩石复杂体系痕量分离分析。

    The results show that the crown ether extraction- neutron activation method can be satisfactorily applied to the separation and determination of trace rhenium in rock samples and complex systems.

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  • 如何设计单一金属离子具有高选择性,一直人们所面临的具有挑战性的课题。

    It is a challenge for people to design more highly selective crown ether for single metal ions.

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  • 结果表明类聚合物冠醚离子很强的络合能力良好转移催化活性

    It is shown that these polymers have very high complexing capacities with potassium and sodium ions and have good phase transfer catalysis activity.

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  • 本文综述了近年来杯芳冠醚合成构象固定、衍生以及它们的性质等方面研究进展

    This review describes the research progress of calixcrowns including their syntheses, conformation immobilization, derivatives and molecular recognition abilities.

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  • 本文设计合成了几种含邻菲咯衍生物研究它们几种铵盐形成水凝胶的行为。

    Several crown ether derivatives possessing phenanthroline groups were prepared and their gelation properties with ammonium were investigated.

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  • 综述改性硅胶萃取分离金属离子研究进展,对制备、应用进行详细的介绍。

    This review deals with the progress in the studies of silica gel bound crown for extraction and separation of metal ions. The preparation, application and instrument are described in detail.

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  • 由于引入甲酰胺取代基,因而苯胺及不经衍生化碱性化合物能特殊选择性分离

    Excellent selectivity was obtained for the separations of polar position isomers. The benzamide substituent group on crown ether makes the stationa…

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  • 芳烃作为继环糊精之后第三代大主体化合物金属离子具有选择性萃取作用。

    Calixarene is a kind of respecting host macrocyclic compound followed cyclodextrin and crown ether, and has strong ability of selective extraction of metal ions.

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  • 研究结果表明,选择性激发离子络合物中的蒽醌冠醚发生分子能量转移观察到铕离子发光

    Selective excitation of the anthraquione moiety intramolecular energy transfer from excitated anthraquione to Eu 3+ occurred, the luminescence of Eu 3+ was observed.

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  • 论文主要研究了新型性氮合成包括以下方面内容1、手性氮杂冠醚合成结构表征

    The dissertation mainly involves in synthesis of chiral aza crown ethers and includes the following aspects of content:1. Synthesis and structural characterization of chiral aza crown ethers.

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  • 3具有不同官能团苯并相应的-冠醚配合物的结构参数计算(298.15K

    Table 3 Calculated values of geometrical parameters for benzo-crown ethers with different functional groups and their complexes with Li+ (298.15 K, gas phase)

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  • 本文研究了在苯乙烯不外加乳化剂乳液聚合体系中,加入王冠醚18--6聚合反应及其产物的影响。

    The emulsifier-f ree emulsion polymerization of styrene in the presence of 18-crown-6 has been studied.

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  • 实验结果表明,DCH18C6水溶液中的溶解度不仅溶液酸度、含盐量有关,而且还与形态有关。

    The results show that the solubility of DCH18C6 in an aqueous solution depends not only upon the acidity, the salt content, and the temperature of the solution, but also upon its own existing form.

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  • 合成一种新的,氧化偶氮双苯并15 -- 5。初步探讨了它的光异构现象及其稀土碱金属离子的萃取能力

    Azoxybisbenzo-15-crown-5 was synthesized. Photoinduced trans-cis isomerization as well as its ability to extract alkali metals and rare earth metals' were dis-cussed.

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  • 研究了作为制备新型硝基原料中间体2-硝基-1,3-苯二酚(NB多甘醇双对甲苯磺酸酯(OEDT)的合成

    Synthesis of 2 nitro 1,3 benzenediol( NB) and oligoethyleneglycol ditosylate(OEDT) used as material for inner nitrocrown ether are studied.

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  • 本文分子识别角度,探讨了色谱学中超分子化学问题,并详细地评述冠醚、液晶、环糊精固定液的分子识别机理的研究状况。

    This paper gives a review of the aspects of supramolecular chemistry based on the molecular recognition mechanisms in gas chromatography with 55 references.

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  • 本文分子识别角度,探讨了色谱学中超分子化学问题,并详细地评述冠醚、液晶、环糊精固定液的分子识别机理的研究状况。

    This paper gives a review of the aspects of supramolecular chemistry based on the molecular recognition mechanisms in gas chromatography with 55 references.

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