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国家自然科学基金(s20932004)

作品数:6 被引量:21H指数:4
相关作者:郭东升刘育张捷王振蒋邦平更多>>
相关机构:南开大学更多>>
发文基金:国家自然科学基金国家重点基础研究发展计划更多>>
相关领域:理学更多>>

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6 条 记 录,以下是 1-9
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Pillararene-Based Supramolecular polymers Constructed by Orthogonal Supramolecular Interactions
Supramolecular polymers,in which monomeric units are selfassembled by reversible and highly directional non-co...
Hu,Xiao-YuLin,ChenWang,Leyong
基于柱芳烃的超分子聚集体构筑及药物转运功能
由对苯二酚或对苯二酚醚对位桥联形成的柱芳烃是一类新型的超分子大环主体化合物,由于其独特的刚性且对称的柱状结构,使得柱芳烃作为大环主体可以选择性识别不同类型的客体分子.因此,柱芳烃在构筑各种有趣的诸如纳米材料、化学传感器、...
胡晓玉林晨李艳王乐勇
关键词:超分子化学超分子聚集体
Pillararene-Based Supramolecular polymers Constructed by Orthogonal Supramolecular Interactions
<正>Supramolecular polymers,in which monomeric units are selfassembled by reversible and highly directional non...
Hu,Xiao-YuLin,ChenWang,Leyong
基于杯芳烃和紫精的电刺激响应二元水凝胶(英文)被引量:7
2012年
基于上缘四脯氨酸修饰杯[4]芳烃和各种紫精客体分子的相互作用,我们构筑了一类新型的二元超分子水凝胶.得到结果显示,在酸性条件下,溴化紫精盐最易于促进四脯氨酸修饰杯[4]芳烃形成水凝胶.并且经落球法测定了所制备水凝胶的凝胶-溶胶转变温度,采用原子力显微镜和扫描电子显微镜表征了水凝胶的微观形态,发现紫精的侧链对水凝胶性质具有显著影响,包括凝胶-溶胶转变温度和微观形态.值得注意的是,该类水凝胶不仅具有优良的电刺激响应性,而且能够通过化学、pH和热等多种因素进行调控.
王振郭东升张捷刘育
关键词:杯芳烃紫精
Selective binding of bile salts by β-cyclodextrin derivatives with appended quinolyl arms被引量:4
2013年
Two β-cyclodextrin derivatives bearing appended quinolyl and isoquinolyl arms,i.e.mono-(6-quinolyl- 6-deoxy)-β-cyclodextrin(1) and mono-(6-isoquinolyl-6-deoxy)-β-cyclodextrin(2) were synthesized in satisfactory yields and fully characterized.Their original conformations and binding behaviors toward four bile salt guests,that is,sodium cholate(CA),sodium deoxycholate(DCA),sodium glycocholate (GCA),and sodium taurocholate(TCA),were investigated by means of fluorescence,circular dichroism and 2D NMR spectroscopy.The study of solution structures revealed that both quinolyl and isoquinolyl arms were located outside the cyclodextrin cavity.The results obtained from the fluorescence titrations showed that the binding abilities of hosts 1 and 2 with selected bile salts varied in an order of DCA 〉 CA 〉 GCA.The selective binding of hosts toward bile salt guests was discussed from the viewpoints of induced-fit and multiple binding.
Sha-Sha ZhaiYong ChenYu Liu
苝酰亚胺和大环化合物的超分子组装(英文)
2013年
苝酰亚胺及其衍生物是一类具有良好的π…π堆积能力和优良的光电性能的n型半导体材料,通过该类化合物与大环化合物构筑纳米超分子组装体是近年来化学、材料科学和纳米科学等领域备受关注的研究之一。本文主要论述了近年来以共价或非共价的方法将超分子大环化合物引入到苝酰亚胺体系构筑出各种纳米功能超分子组装体的研究进展,可以认为超分子大环化合物与苝酰亚胺的组装不仅可以调节苝酰亚胺的光物理行为,而且还可以赋予超分子组装体很多新颖的物理化学特性,使其在传感材料和光电器件等方面展现出很大的潜在应用价值。这些研究极大地拓展了构筑新颖苝酰亚胺纳米超分子组装体的方法。我们相信本文对于进一步构筑具有特定结构和功能的苝酰亚胺-大环化合物超分子组装体将起到积极的促进作用。
蒋邦平郭东升刘育
关键词:超分子结构苝酰亚胺大环化合物
Selectively Fluorescent Sensing Behavior of Phenylaza-15-crown-5-triazolyl Coumarin for Hg2+ and Fe3+ in Alcohol and Aqueous Media Respectively被引量:3
2013年
A n-conjugated phenylaza-15-crown-5-triazol-substituted coumarin fluoroionophore 1 was synthesized by cop- per(I)-catalyzed Huisgen alkyne-azide 1,3-dipolar cycloaddition (CuAAC "click" reaction). 1 can display selective fluorescence enhancement toward Fe3+ over Hg2+, Cr3+ and the other metal ions in aqueous solution. In sharp con- trast, the fluorescence behavior between Fe3+ and Hg2+ is completely reversed in EtOH. That is, Hg2+ gives the largest fluorescence enhancement over Cr3+, Fe3+ and the other metal ions.
Zhijun Zhang Hui Wang Hengyi Zhang Yu Liu
关键词:COUMARIN
A twin-axial[5]pseudorotaxane based on cucurbit[8]uril and a-cyclodextrin被引量:6
2013年
A twin-axial hetero[5]pseudorotaxane was constructed based on 1-hexyl-4,40-bipyridinium guest 1 and cucurbit[8]uril(CB[8])and a-cyclodextrin(a-CD).In its structure,CB[8]included two bipyridinium units to realize the twin-axial mode,and the hexyl chain was threaded into the cavity of a-CD.The[5]pseudorotaxane contains two types of macrocyclic hosts while the single axial and twin axial modes co-exist in its structure.The transformation of[5]pseudorotaxane could be realized by the addition of acid and 2,6-dihydroxynaphthalene(HN).
Li-Hua WangZhi-Jun ZhangHeng-Yi ZhangHai-Lang WuYu Liu
Synthesis of a bistable[3]rotaxane and its pH-controlled intramolecular charge-transfer behavior被引量:6
2013年
A [3]rotaxane I involving two naphtho-21-crown-7 (N21 C7) rings and a dumbbell-shaped component 4 was synthesized. The dumbbell-shape molecule 4 contains one viologen nucleus, two secondary alkyl ammonium sites and two phenyl stoppers. After threading the N21C7 ring with the thread-like ammonium guest 3, the copper(l)-catalyzed Huisgen alkyne-azide 1,3-dipolar cycloaddition (CuAAC "click" reaction), was performed to connect the pseudorotaxanes with viologen unit 2 and generate 1. Through treating the [3]rotaxane by the base and acid circularly, the two N21 C7 rings can make shuttling motion along the axle. Meanwhile the distance between the electron-deficient viologen unit and the electron-rich naphthol group can be adjusted precisely along with a remarkable intramolecular charge- transfer (CT) behavior.
Hui WangZhi-Jun ZhangHeng-Yi ZhangYu Liu
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