Inspired by the light-gated ion channels in cell membranes that play important roles in many biological activities, herein, we developed an artificial light-gated ion channel membrane out of conjugated microporous polymers. Through bottom-up design of the monomer molecular structure and by the electropolymerization method, the membrane pore size and thickness were precisely controlled on the molecular level. The obtained membrane exhibited uniform pore size and highly sensitive light-switchable response. The photoisomerization of the polymer chain resulted in a reversible “on and off” light control over the pore size and subsequently led to light-gated ion transport across the membrane for a series of ions including hydrogen, potassium, sodium, lithium, calcium, magnesium, and aluminum ions.

中文翻译：

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用于光门控离子传输的共轭微孔聚合物膜

受细胞膜中在许多生物活动中发挥重要作用的光门控离子通道的启发，我们在此开发了一种由共轭微孔聚合物制成的人工光门控离子通道膜。通过自下而上的单体分子结构设计和电聚合方法，在分子水平上精确控制膜孔径和厚度。获得的膜表现出均匀的孔径和高度敏感的光开关响应。聚合物链的光异构化导致对孔径的可逆“开和关”光控制，随后导致光门控离子传输跨膜一系列离子，包括氢、钾、钠、锂、钙、镁和铝离子。