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However, their utility is often restricted by a fundamental trade\u2010off: as temperature increases, orientational order diminishes, causing a sharp loss in load\u2010bearing capacity and actuation stress above the isotropic transition. Here, we report a sequential integration strategy that overcomes this thermal limitation by embedding ultrathin Cu\u2010TCPP metal\u2010organic framework (MOF) nanosheets within the LCE network. This approach establishes a pore\u2010confinement\u2010enabled architecture that restricts segmental relaxation and preserves molecular alignment even under harsh thermal conditions. The resulting LCE\u2010MOF composites exhibit exceptional mechanical robustness, achieving a tensile strength of 79\u00a0MPa at 25\u00b0C and maintaining 4.2\u00a0MPa at 200\u00b0C. Notably, the materials deliver a high actuation stress of 3.9\u00a0MPa at 200\u00b0C, significantly outperforming composites fabricated via conventional direct mixing. This confinement strategy effectively decouples mechanical integrity from thermal transitions, as demonstrated by a high\u2010performance passive thermal valve capable of reliable switching in extreme environments. Our work provides a versatile methodology for designing resilient, high\u2010output soft actuators for aerospace, industrial, and high\u2010temperature hazardous applications where thermal stability and reliable actuation are critically demanded.<\/jats:p>","DOI":"10.1002\/adma.73780","type":"journal-article","created":{"date-parts":[[2026,6,19]],"date-time":"2026-06-19T05:39:34Z","timestamp":1781847574000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["MOF\u2010Induced Pore Confinement: A Strategy for Thermomechanically Robust and High\u2010Strength Liquid Crystal Elastomers"],"prefix":"10.1002","volume":"38","author":[{"given":"Jiaxiang","family":"Huang","sequence":"first","affiliation":[{"name":"School of Chemistry and Chemical Engineering State Key Laboratory of Digital Medical Engineering Southeast University  Nanjing Jiangsu P. R. 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