{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T17:24:01Z","timestamp":1786123441728,"version":"build-2736575974"},"reference-count":56,"publisher":"Wiley","issue":"44","license":[{"start":{"date-parts":[[2026,6,7]],"date-time":"2026-06-07T00:00:00Z","timestamp":1780790400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,6,7]],"date-time":"2026-06-07T00:00:00Z","timestamp":1780790400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Magnesium ions (Mg\n                    <jats:sup>2+<\/jats:sup>\n                    ), vital for biological signaling and energy regulation, remain challenging to selectively and efficiently transport using artificial membranes, which typically lack molecular recognition and confined ion channels. Here, we report a \u03b2\u2010ketoenamine covalent organic framework (TAPA\u2010TFP COF) membrane that achieves near\u2010ideal Mg\n                    <jats:sup>2+<\/jats:sup>\n                    selectivity (t\n                    <jats:sub>+<\/jats:sub>\n                    = 0.98) and ultrafast transport through ordered 13.6 \u00c5 nanochannels. Structural and molecular dynamics analyses reveal that the precisely arranged O\/N coordination sites within the porous nanochannels partially strip the Mg\n                    <jats:sup>2+<\/jats:sup>\n                    hydration shell, while C = O\u00b7\u00b7\u00b7H\u2500O\u2500H hydrogen\u2010bond networks lower migration barriers, enabling high permeability. The ultrathin, large\u2010area, and defect\u2010free membrane delivers record osmotic power and current densities of 636.64\u00a0W m\n                    <jats:sup>\u22122<\/jats:sup>\n                    and 9213.3 A m\n                    <jats:sup>\u22122<\/jats:sup>\n                    under a 500\u2010fold salinity gradient. Beyond efficient power generation, the Mg\n                    <jats:sup>2+<\/jats:sup>\n                    \u2010selective nanochannels enable iontronic transistors, logic operations, and multimodal signal transduction, establishing a molecularly engineered porous platform that integrates ion\u2010specific transport with energy conversion and information processing.\n                  <\/jats:p>","DOI":"10.1002\/smll.74164","type":"journal-article","created":{"date-parts":[[2026,6,8]],"date-time":"2026-06-08T06:26:16Z","timestamp":1780899976000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Ultrathin Magnesium\u2010Ion Selective COF Membranes for Efficient Osmotic Power and Iontronic Logic Control"],"prefix":"10.1002","volume":"22","author":[{"given":"Lixue","family":"Yang","sequence":"first","affiliation":[{"name":"Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences  Beijing P. R. China"},{"name":"School of Chemistry and Life Sciences Changchun University of Technology  Changchun P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yixin","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology  Kowloon Hong Kong"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Du","sequence":"additional","affiliation":[{"name":"Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences  Beijing P. R. China"},{"name":"School of Nanoscience and Engineering University of Chinese Academy of Sciences  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Feiyao","family":"Yang","sequence":"additional","affiliation":[{"name":"Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences  Beijing P. R. 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5530-0380","authenticated-orcid":false,"given":"Zhong Lin","family":"Wang","sequence":"additional","affiliation":[{"name":"Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2670-6362","authenticated-orcid":false,"given":"Di","family":"Wei","sequence":"additional","affiliation":[{"name":"Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences  Beijing P. R. China"},{"name":"Centre for Photonic Devices and Sensors University of Cambridge  Cambridge 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