Electric double-layer synthesis of a spongelike, lightweight reticular membrane

• 成果类型: Article
• 署名作者: Itoh, Yoshimitsu; Fu, Tengfei; Champagne, Pier-Luc; Yokoyama, Yudai; Numabe, Kunita; Hong, You-lee; Nishiyama, Yusuke; Wang, Hsiao-Fang; Kumagai, Akemi; Jinnai, Hiroshi; Watanabe, Hirohmi; Shibata-Seki, Teiko; Nagao, Asuteka; Suzuki, Tsutomu; Saito, Yukie; Wakabayashi, Keigo; Yoshii, Takeharu; Izumi, Atsushi; Hagita, Katsumi; Furukawa, Junichi; Aida, Takuzo
• 署名单位: University of Tokyo; Japan Science & Technology Agency (JST); RIKEN; RIKEN; Jeol Ltd; Tohoku University; National Institute of Advanced Industrial Science & Technology (AIST); University of Tokyo; National Defense Academy - Japan; RIKEN; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; National Central University; KAO Corporation
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-11550
• DOI: 10.1126/science.adq0782
• 发表日期: 2025-07-03
• 页码: 73-77
• 关键词: films; electropolymerization; polymerization; polymers; water

摘要

Electrochemical polymer synthesis usually forms dense films bound to the electrode. We report a single-step synthesis of large-area, ultrathin (similar to 70-nanometer) polymeric membranes with a luffa-like, reticular cross-linked network with low density (0.5 grams per cubic centimeter). This particular membrane forms within an electric double layer in water constructed by voltage application without supporting electrolytes-in which deprotonated resorcinol and an aldehyde react three-dimensionally with a self-termination mechanism-and is spontaneously released when the voltage bias is removed. Initially rigid with a Young's modulus of 8.9 gigapascals, this membrane reversibly regains flexibility (0.5 gigapascals) upon wetting and can be used as a large-area membrane for separations. Its shape-persistent carbonization made it possible to yield ultrathin (similar to 22-nanometer) nanoporous carbon membranes.