Helix-sense-selective permeation (HSSPerm) of racemic helical oligoacetylenes through one-handed helical channels has been realized. The one-handed helical channels were created in the one-handed helical polyacetylene membranes by the helix-sense-selective decomposition (HSS-SCAT) of the corresponding racemic helical polyacetylene membranes, followed by removing the formed oligomers. Since the HSS-SCAT reaction proceeds with just circularly polarized visible light with no reagents, no catalysts, no solvent, and high selectivity, the chiral channel-containing membrane with high purity was obtained easily. This membrane could separate racemic helical oligoacetylenes enantioselectively in up to 30%ee. To our knowledge, this is the first example of HSSPerm.

中文翻译：

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外消旋螺旋低聚乙炔通过聚合物膜中的单手螺旋通道的螺旋正义选择性渗透


已经实现了外消旋螺旋低聚乙炔通过单手螺旋通道的螺旋正义选择性渗透（HSSPerm）。通过相应外消旋螺旋聚乙炔膜的螺旋正义选择性分解（HSS-SCAT），然后除去形成的低聚物，在单手螺旋聚乙炔膜中产生单手螺旋通道。由于HSS-SCAT反应仅在圆偏振可见光下进行，无试剂、无催化剂、无溶剂，选择性高，容易获得高纯度的含手性通道膜。该膜可以对映选择性分离外消旋螺旋低聚乙炔，分离效率高达 30%ee。据我们所知，这是 HSSPerm 的第一个示例。