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Here, by mimicking the structure of dragline silks, a high\u2010performance fluorescent fiber Alg\u2010TPEA\u2010PEG is designed by non\u2010covalently cross\u2010linking the polysaccharide chains of alginate with AIEgen\u2010based surfactant molecules as the flexible contact points. The non\u2010covalent cross\u2010linking network provides sufficient energy\u2010dissipating slippage between polysaccharide chains, leading to Alg\u2010TPEA\u2010PEG with highly improved mechanical performances from the plastic strain stage. By successfully transferring the extraordinary mechanical performances of polysaccharide chains to macroscopic fibers, Alg\u2010TPEA\u2010PEG exhibits an outstanding breaking strength of 1.27\u00a0GPa, Young's modulus of 34.13\u00a0GPa, and toughness of 150.48\u00a0MJ\u00a0m\n                    <jats:sup>\u22123<\/jats:sup>\n                    , which are comparable to those of dragline silk and outperforming other artificial materials. More importantly, both fluorescent and mechanical properties of Alg\u2010TPEA\u2010PEG can be well preserved under various harsh conditions, and the fluorescence and biocompatibility facilitate its biological and biomedical applications. This study affords a new biomimetic designing strategy for gaining super\u2010strong, super\u2010stiff, and super\u2010tough fluorescent biomaterials.\n                  <\/jats:p>","DOI":"10.1002\/smll.202406163","type":"journal-article","created":{"date-parts":[[2024,9,23]],"date-time":"2024-09-23T05:16:48Z","timestamp":1727068608000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Super\u2010Strong, Super\u2010Stiff, and Super\u2010Tough Fluorescent Alginate Fibers with Outstanding Tolerance to Extreme Conditions"],"prefix":"10.1002","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7991-0194","authenticated-orcid":false,"given":"Zhongtao","family":"Wu","sequence":"first","affiliation":[{"name":"Key Laboratory of Optic\u2010electric Sensing and Analytical Chemistry for Life Science MOE Shandong Key Laboratory of Biochemical Analysis College of Chemistry and Molecular Engineering Qingdao University 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