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However, most of these COFs are either poor in luminescence or lack of water\u2010stability. Herein, a series of isostructural D\u2212A vinylene\u2010linked COFs were constructed based a new <jats:italic><jats:bold>D<\/jats:bold><\/jats:italic><jats:sub><jats:bold>2h<\/jats:bold><\/jats:sub> symmetric linker 1,4\u2010bis(4,6\u2010dimethyl\u20101,3,5\u2010triazin\u20102\u2010yl)benzene (<jats:bold>TMTA<\/jats:bold>) with high crystallinity, comparative high surface area and excellent chemical\/thermal stability. Impressively, their adsorption and luminescence wavelength vary with respect to the density of \u03c0\u2010systems in the electron\u2010donating group, which constitute the foundation for molecular engineering the luminescent properties of vinylene\u2010linked COFs. The DFT calculations further established the relationship between the luminescence properties and the donor electronic structure. Moreover, one of representative COF named FZU\u2010203 showed inspiring applications in bioimaging, which may further provide strategic guidance for the use of vinylene\u2010linked COFs as fluorescent nanoprobes in non\u2010invasive medical diagnosis and visualization therapy of tumors.<\/jats:p>","DOI":"10.1002\/chem.202401044","type":"journal-article","created":{"date-parts":[[2024,4,28]],"date-time":"2024-04-28T22:14:10Z","timestamp":1714342450000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Modular Construction of Vinylene\u2010Linked Covalent Organic Frameworks with Tunable Emission for Tumor Visualization"],"prefix":"10.1002","volume":"30","author":[{"given":"Jun","family":"Wang","sequence":"first","affiliation":[{"name":"College of Materials Science and Engineering Fuzhou University  Fuzhou, Fujian 350108 P. R. 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