共查询到19条相似文献,搜索用时 796 毫秒
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硫杂杯芳烃是一类以硫原子取代桥联亚甲基的新型杯芳烃,作为新一代超分子砌块,在分子识别、超分子自组装、晶体工程和纳米材料等方面都获得了广泛的应用,己成为当今超分子化学研究的新热点. 相似文献
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杯芳烃上缘衍生物及其应用 总被引:1,自引:0,他引:1
杯芳烃作为一类含有空腔的主体分子,在分子识别、酶模拟、光电材料等方面有很广泛的应用.本文就杯芳烃上缘衍生物的合成及其应用做了一个综述. 相似文献
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简要介绍了杯芳烃的结构特征.综述了杯芳烃超分子化合物的组装与聚集、新型杯芳烃大环分子的合成及结构性能、新型杯芳烃的合成组装及选择性识剐作用等方面的研究新进展。 相似文献
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荧光型杯芳烃作为一类能发出荧光的物质被用作荧光探针,而杯芳烃带上荧光基团萘后,可利用其荧光发射光谱和荧光强度的不同,对有机分子和金属阳/阴离子等加以识别.荧光型杯芳烃的合成颇具价值.综述了国内外以荧光基团萘环的杯芳烃衍生物用作传感器的最新研究和应用进展. 相似文献
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杯芳烃是一类通常由对叔丁基苯酚和甲醛在碱性条件下缩合而成的环状低聚体.由于杯芳烃易于大量制备、环腔大小可调,可进行多种化学修饰等特点,已引起了许多超分子化学家的极大兴趣,被誉为继冠醚和环糊精之后的第三代主体分子. 相似文献
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杯芳烃是由多个苯酚类化合物通过亚甲基在酚羟基邻位连接而形成的环状低聚物。由于杯芳烃及其衍生物对客体分子表现出特殊的识别能力,因而产生了各种高价值的应用。本文介绍了杯芳烃及其衍生物的合成和应用的情况。 相似文献
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在过去的几十年里,因其构象及结构上的灵活多变性,使得杯芳烃及其衍生物被作为分子离子识别的载体而引起广泛关注。硫桥杯芳烃是杯芳烃家族的新成员,硫桥的引入使其拥有了许多不同于经典杯芳烃的特点。文章介绍了硫桥杯芳烃的研究进展,其中包括硫桥杯芳烃的特点、母体及其衍生物的合成、分子识别功能及应用。 相似文献
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杯芳烃是一类由苯酚和甲醛缩合的含有洞穴的大环化合物。作为第三代主体化合物,其在分子识别,模拟酶催化,自组装等领域的研究取得了很大进展。近年来,特别是手性杯芳烃由于其特殊的结构,在不对称催化领域更是引起了人们的极大重视和兴趣。文章合成了几种手性杯芳烃化合物并对其在催化性能方面作了一些研究。 相似文献
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《Journal of the European Ceramic Society》2006,26(4-5):655-659
Calixarenes are macrocyclic organo anions, which cavity is capable of molecular recognition, while layered double hydroxides (LDHs) are widely known as hydrotalcite-like compounds, anion exchangers and host–guest materials. In this study, the intercalation of water-soluble p-sulfonated calix[4]arene (CS4) in the interlayer of the Mg–Al and Zn–Al LDHs (M2+/Al ratio = 3) by the coprecipitation method has been investigated as well as the adsorption property of the resulting CS4/LDHs for benzyl alcohol (BA) and p-nitrophenol (NP). It was found that the CS4/LDHs with the molar ratio of CS4/Al = 0.25 (Mg–Al LDH) and 0.12 (Zn–Al LDH) were obtained as a single phase. The arrangement of CS4 in the LDH interlayer was different by the kind of the host metal ions as CS4 cavity axis perpendicular (Mg–Al LDH) and parallel (Zn–Al LDH) to the basal layer, influencing strongly on the BET surface area, N2 adsorbed volume and adsorption property for BA and NP. 相似文献
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M. Kaddouri N. Cheriaa R. Souane M. Bouklah A. Aouniti R. Abidi B. Hammouti J. Vicens 《Journal of Applied Electrochemistry》2008,38(9):1253-1258
Calixarenes CA1–CA4 containing one to four 4-imidazolylethylamidocarbonyl groups were synthesized and tested as inhibitors for the corrosion
of mild steel in 1 M HCl at 308 K. The study was made using Tafel polarisation and weight-loss methods. In contrast to CA1, calixarenes CA2–CA4 were good inhibitors, reaching inhibition efficiencies (E%) of 94 to 100% at 10−4 M. The values of the inhibition efficiency calculated by the two techniques were in acceptable agreement. E% increased with
the number of 4-imidazolylethylamidocarbonyl groups attached to the calixarene. Polarisation curves showed that CA2–CA4 act as mixed-type inhibitors. Their adsorption on the steel surface followed a Langmuir isotherm. Thermodynamic parameters
of adsorption were also deduced. 相似文献