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Characterization of Smart Membrane

智能膜的表征

基本信息

批准号：
13133201
负责人：
ANDO Isao
金额：
$ 35.33万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13133201/
关键词：
Smart membrane Molecular cavity PFGNMR Highly oriented polypeptide gel Channel Amphiphilic dendron discotic columnar liquid-crystal Aromatic polvimide with alkyl side chain 高配向高分子ゲル三次元NMR顕微鏡磁場勾配NMR ポリエステルポリイミド分子キャビティー設計ミクロ

项目摘要

The some outcomes of this research are described as follows ;1) The polyester having long n-alkyl side chains can form the hexagonal columnar phase. This ordered structure presents a channel type molecular cavity with diameter of about 3 nm, it was well characterized via the diffusion coefficient of the probe gas molecule in this cavity determined exactly by the high field gradient NMR method which was developed at the time of this researching. The fact that the high stretching polyester has high gas separation was discovered and could be concluded that this polyester is one of the novel smart membranes.2) The α-helical chains of PBLG highly oriented along the high magnetic field was cross-linked, as a result, the polypeptide gel having well-alignment channels with diameter of μm order were successfully prepared. In addition, the light-emitting polypeptide gel could be obtained by control the diameter of the channel, indicating that these PBLG gels are possible to utilize for not only separation but also optical fields.3) By introduction of the hydrophilic oligo-ethyleneoxide and the hydrophobic n-alkyl chains, the amphiphilic and dendriforming liquid-crystal compounds were successfully synthesized.4) It was found that the aqueous solution of sulfinyl group having yellow-dye, Y104 can form the lyotropic and discotic columnar liquid-crystal, and then, the aggregates of Y104 connected with Ba ions in rigid rod-type assembly produce successfully channel-like cavities.5) To control imidization of the aromatic polyamide with n-alkyl side chains succeeded to prepare the molecular cavity having polyimide membrane.These results introduce the new wave of processing and basic research for novel smart membranes.

本研究的主要成果如下：1)具有较长正构烷基侧链的聚酯可以形成六方柱状相。这种有序结构呈现出一个直径约为3 nm的沟道型分子腔，通过本研究期间发展的高场梯度核磁共振方法准确地测定了探针气体分子在该腔中的扩散系数，对其进行了很好的表征。发现高拉伸聚酯具有较高的气体分离度，是一种新型的智能膜。2)将沿强磁场高度取向的PBLG的α-螺旋链进行交联，成功地制备出具有良好排列通道的多肽凝胶，其直径为μm数量级。此外，通过控制通道的直径可以得到发光多肽凝胶，这表明这些PBLG凝胶不仅可以用于分离，还可以用于光学领域。3)通过引入亲水性的低聚环氧乙烷和疏水的正构烷基链，成功地合成了两亲性和树枝状液晶化合物。4)发现具有黄色染料的亚磺基的水溶液Y104可以形成溶致和盘状的柱状液晶，然后，Y104分子聚集体与Ba2+在刚性棒状组装中形成通道状空腔。5)控制芳香族聚酰胺的亚胺化反应，成功地制备了聚酰亚胺膜分子腔。这些结果为新型智能膜的加工和基础研究带来了新的浪潮。