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Yet, the substantial interspaces and free volumes inherent to MOFs can undermine photoluminescence efficiency, as they partially constrain intramolecular dynamics. In this study, we achieved optimization of both one\u2010 and two\u2010photon excited fluorescence by incorporating linkers into an interpenetrated tetraphenylethene\u2010based MOF (TPE\u2010MOF). This linker installation strategy enables fine\u2010tuning of both crystal packing density and ligand conformations. Strikingly, the desolvated MOFs exhibit remarkable two\u2010photon absorption (TPA) cross\u2010sections, reaching an impressive 8801\u2005GM. Consequently, these materials demonstrate exceptional performance in one\u2010 and two\u2010photon excited cellular imaging of HepG2 cells. Our work introduces an innovative approach to enhancing two\u2010photon excited fluorescence (TPEF) and broadens the scope of research into one\u2010 and two\u2010photon excited fluorescence (1\/2 PEF).<\/jats:p>","DOI":"10.1002\/anie.202420912","type":"journal-article","created":{"date-parts":[[2025,1,12]],"date-time":"2025-01-12T22:14:13Z","timestamp":1736720053000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Boosting One\u2010 and Two\u2010Photon Excited Fluorescence of Interpenetrated Tetraphenylethene\u2010Based Metal\u2013Organic Frameworks (TPE\u2010MOFs) by Linker Installation"],"prefix":"10.1002","volume":"64","author":[{"given":"Huihui","family":"He","sequence":"first","affiliation":[{"name":"Strait Institute of Flexible Electronics (SIFE, Future Technologies) Fujian Normal University and Strait Laboratory of Flexible Electronics (SLoFE)  Fuzhou 350017 China"},{"name":"State Key Laboratory of 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