Unique organogel formation with macroporous materials constructed by the freeze-drying of aqueous cyclodextrin solutions.
Unique organogel formation with macroporous materials constructed by the freeze-drying of aqueous cyclodextrin solutions.
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DOI：
10.1021/la1009434
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发表时间：
2010-06
期刊：
影响因子：
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通讯作者：
Yasuhiro Marui;Akira Kikuzawa;T. Kida;M. Akashi
中科院分区：
文献类型：
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作者：
Yasuhiro Marui;Akira Kikuzawa;T. Kida;M. Akashi
大孔环糊精材料(MP-α-、β-和伽马-镉)可以通过冷冻干燥α-、β-和伽马-镉的水溶液轻松制备。这些MP-CD在常温下表现出对各种有机溶剂和油的吸附能力，从而形成有机凝胶。通过有机溶剂吸附实验观察了MP-CD微观结构的形态变化。尤其是MP-CDS对具有氢键形成能力的极性有机溶剂，包括1，4-二氧六环和乙醇的吸附，使其微观结构发生了显著的形态变化。MP-α和伽马-镉对这些极性溶剂的吸收分别导致了α-和伽马-镉的沟道型组装。
Macroporous cyclodextrin materials (MP-alpha-, beta-, and gamma-CDs) were easily fabricated by the freeze-drying of aqueous solutions of alpha-, beta-, and gamma-CDs. These MP-CDs showed the absorption ability toward various organic solvents and oils to give organogels at ambient temperature. The morphological changes of the MP-CD microstructures were observed through the absorption of organic solvents. In particular, the absorption of polar organic solvents with hydrogen-bond forming ability, including 1,4-dioxane and ethanol, by the MP-CDs caused remarkable morphological changes in the microstructures. The absorption of these polar solvents by MP-alpha- and gamma-CDs resulted in the formation of channel-type assemblies of alpha- and gamma-CDs, respectively.