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Nevertheless, the practical application of chitosan\u2010based films is hindered by insufficient antimicrobial activity and susceptible to breakage. In this study, a covalent organic framework (TpPa\u2010SO\n                    <jats:sub>3<\/jats:sub>\n                    H) was synthesized at room temperature and exhibited inhibitory efficacies of 90.92% and 92.53% against\n                    <jats:italic>Escherichia coli<\/jats:italic>\n                    and\n                    <jats:italic>Staphylococcus aureus<\/jats:italic>\n                    . Chitosan\/TpPa\u2010SO\n                    <jats:sub>3<\/jats:sub>\n                    H film was formed through a molecular weaving strategy, and its elongation at break and tensile strength were remarkably enhanced to 148% and 403%, respectively, influenced by the concentration of TpPa\u2010SO\n                    <jats:sub>3<\/jats:sub>\n                    H and the molecular weight of chitosan. The composite film achieves exceptional oxygen and carbon dioxide barrier properties. The water vapor control ability of the film depends on the hydrophilicity of TpPa\u2010SO\n                    <jats:sub>3<\/jats:sub>\n                    H, while the UV blocking ability is mainly attributed to UV light harvesting and photocatalysis activity of TpPa\u2010SO\n                    <jats:sub>3<\/jats:sub>\n                    H. The shelf life of grapes, strawberries, and blueberries has doubled thanks to the preservation of the Chitosan\/TpPa\u2010SO\n                    <jats:sub>3<\/jats:sub>\n                    H film, while maintaining the postharvest quality and antioxidant activity of the fruits. Furthermore, the Chitosan\/TpPa\u2010SO\n                    <jats:sub>3<\/jats:sub>\n                    H film for 45 days underwent considerable degradation. All the contributors make chitosan film an eco\u2010friendly packaging material for fruit preservation.\n                  <\/jats:p>","DOI":"10.1002\/smll.75642","type":"journal-article","created":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T07:20:22Z","timestamp":1788765622000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Eco\u2010Friendly, Multifunctional Antibacterial Chitosan\/Covalent Organic Framework Composite Films via Molecular Weaving for Fruit Preservation"],"prefix":"10.1002","author":[{"given":"Pengmin","family":"Zhang","sequence":"first","affiliation":[{"name":"China Light Industry Key Laboratory of Food Intelligent Detection &amp; Processing School of Food Science and Engineering Jiangsu University  Zhenjiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Heera","family":"Jayan","sequence":"additional","affiliation":[{"name":"China Light Industry Key Laboratory of Food Intelligent Detection &amp; Processing School of Food Science and Engineering Jiangsu University  Zhenjiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Limei","family":"Yin","sequence":"additional","affiliation":[{"name":"School of Agricultural Engineering Jiangsu University  Zhenjiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1699-2433","authenticated-orcid":false,"given":"Milan","family":"Vuki\u0107","sequence":"additional","affiliation":[{"name":"Faculty of Technology Zvornik University of East Sarajevo  Zvornik Bosnia and Herzegovina"},{"name":"China\u2010BiH Belt and Road Joint Laboratory on Smart Agriculture Technology and Equipment Interdisciplinary Center Jiangsu University  Zhenjiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3809-4415","authenticated-orcid":false,"given":"Dragan","family":"Vujadinovic","sequence":"additional","affiliation":[{"name":"Faculty of Technology Zvornik University of East Sarajevo  Zvornik Bosnia and Herzegovina"},{"name":"China\u2010BiH Belt and Road Joint Laboratory on Smart Agriculture Technology and Equipment Interdisciplinary Center Jiangsu University  Zhenjiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3434-3362","authenticated-orcid":false,"given":"Lijin","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Food and Health Beijing Technology &amp; Business University  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5719-7025","authenticated-orcid":false,"given":"Xiaobo","family":"Zou","sequence":"additional","affiliation":[{"name":"China Light Industry Key Laboratory of Food Intelligent Detection &amp; Processing School of Food Science and Engineering Jiangsu University  Zhenjiang China"},{"name":"China\u2010BiH Belt and Road Joint Laboratory on Smart Agriculture Technology and Equipment Interdisciplinary Center Jiangsu University  Zhenjiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6416-7457","authenticated-orcid":false,"given":"Zhiming","family":"Guo","sequence":"additional","affiliation":[{"name":"China Light Industry Key Laboratory of Food Intelligent Detection &amp; Processing School of Food Science and Engineering Jiangsu University  Zhenjiang China"},{"name":"China\u2010BiH Belt and Road Joint Laboratory on Smart Agriculture Technology and Equipment Interdisciplinary Center Jiangsu University  Zhenjiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,7]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/s43016-024-01100-z"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586-025-09218-1"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.adr3837"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.adr8243"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202411314"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202501111"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2CS00558A"},{"issue":"14","key":"e_1_2_8_9_1","doi-asserted-by":"crossref","DOI":"10.1126\/sciadv.adr1596","article-title":"Coassembly of Hybrid Microscale Biomatter for Robust, Water\u2010Processable, and Sustainable Bioplastics","volume":"11","author":"Qiu Y. 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