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However, conventional synthetic approaches of COF films are still plagued by drawbacks, such as harsh reaction conditions, film fragility, and time\u2010consuming processes. Herein, we report a novel liquid crystal (LC)\u2010assisted fabrication of large\u2010area COF films, which exhibits remarkable universality for the synthesis of distinct types of COF films. Mechanistic investigations reveal that non\u2010covalent interactions induced by LC molecules facilitate the dense packing and ordered self\u2010assembly of organic precursors, thereby overcoming the bottleneck of large\u2010scale film fragmentation. Featuring a response time of 4.45 s (15%\u201390% RH), recovery time of 1.95 s (90%\u201315% RH), and sensitivity of 13.90\n                    <jats:sc>m<\/jats:sc>\n                    \u03a9\/%RH, the COF film\u2010based humidity sensor exhibits fast response and excellent durability. Overall, this work provides a versatile strategy to synthesize large\u2010area COF films, enabling the construction of high\u2010performance humidity sensors and thereby offering guidance for the development of high\u2010performance active layers for humidity sensors.\n                  <\/jats:p>","DOI":"10.1002\/smll.73487","type":"journal-article","created":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T09:13:33Z","timestamp":1778663613000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Liquid Crystal Induced Large\u2010Area Continuous Covalent Organic Framework Films for High\u2010Performance Humidity Sensors"],"prefix":"10.1002","volume":"22","author":[{"given":"Ru","family":"Liu","sequence":"first","affiliation":[{"name":"Institute for Advanced Materials and Technology University of Science and Technology Beijing  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xianyang","family":"Yue","sequence":"additional","affiliation":[{"name":"Institute for Advanced Materials and Technology University of Science and Technology Beijing  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Li","sequence":"additional","affiliation":[{"name":"Institute for Advanced Materials and Technology University of Science and Technology Beijing  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lanying","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering College of Engineering Peking University  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhimin","family":"Ao","sequence":"additional","affiliation":[{"name":"Guangdong Provincial Key Laboratory of Wastewater Information Analysis and Early Warning Beijing Normal University Advanced Interdisciplinary Institute of Environment and Ecology  Zhuhai P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yaxin","family":"Du","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Inorganic Fibers and Composites Sinoma Science &amp; Technology Co.,Ltd.  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-3432-5211","authenticated-orcid":false,"given":"Qian","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute for Advanced Materials and Technology University of Science and Technology Beijing  Beijing P. R. 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