Characterization of Smart Membrane

本研究的主要结果如下：1）具有长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的通道型分子空腔，通过高场梯度NMR方法精确测定了探针气体分子在该空腔中的扩散系数，很好地表征了这种有序结构。发现高拉伸聚酯具有良好的气体分离性能，是一种新型的智能膜。2）PBLG的α-螺旋链在强磁场下沿着高度取向，通过交联，成功制备了具有μm量级有序排列通道的多肽凝胶。另外，通过控制通道的直径，可以得到发光多肽凝胶，表明这些PBLG凝胶不仅可以用于分离，而且可以用于光学领域。3）通过引入亲水性低聚环氧乙烷和疏水性正烷基链，成功地合成了两亲性树枝状液晶化合物。发现含黄色染料Y104的亚磺酰基水溶液能形成溶致分散的柱状液晶，Y_（104）的聚集体与Ba离子形成刚性棒状组装体，成功地形成了通道状空腔。通过对含N-烷基侧链的芳香族聚酰胺的酰亚胺化反应的控制，成功地制备了具有分子空腔的聚酰亚胺膜，为新型智能膜的制备和基础研究带来了新的发展趋势。

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.