{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,23]],"date-time":"2026-08-23T16:13:06Z","timestamp":1787501586193,"version":"build-2736575974"},"reference-count":60,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T00:00:00Z","timestamp":1767657600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T00:00:00Z","timestamp":1767657600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52373099"],"award-info":[{"award-number":["52373099"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2026,3,2]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The fluorescence sensing method based on lanthanide metal\u2013organic frameworks (Ln\u2010MOFs) offers high sensitivity, selectivity, and rapid, real\u2010time detection of biogenic amines (BAs). However, their high cost, complex synthesis, and unclear sensing mechanism limit practical application. Herein, waste polyimide is utilized as a precursor to synthesize Eu\u20101,2,4,5\u2010benzenetetracarboxylic acid (Eu\u2010BTEC) via a two\u2010step hydrothermal\u2013solution method. Under optimum conditions, the obtained Eu\u2010BTEC exhibits excellent fluorescence selectivity and sensitivity toward cadaverine, with an apparent constant of 1.58 \u00d710\n                    <jats:sup>6<\/jats:sup>\n                    L\u00b7mol\n                    <jats:sup>\u22121<\/jats:sup>\n                    and a detection limit of 0.17 \u00b5mol\u00b7L\n                    <jats:sup>\u22121<\/jats:sup>\n                    . Density functional theory calculations reveal that the amino groups of cadaverine donate electrons to Eu\n                    <jats:sup>3+<\/jats:sup>\n                    , blocking the intramolecular electron transfer from the benzene ligand to Eu\n                    <jats:sup>3+<\/jats:sup>\n                    . Owing to the absence of chromophores in cadaverine, this electron transfer leads to luminescence quenching of Eu\u2010BTEC. To achieve visual and portable detection, Eu\u2010BTEC\u2010based fluorescence test strips were fabricated by spraying its suspension onto filter paper, enabling visual quantification of cadaverine (0.50 \u00b5mol\u00b7L\n                    <jats:sup>\u22121<\/jats:sup>\n                    ) under UV light. This study not only provides a sustainable route for converting waste polyimide into Ln\u2010MOFs but also elucidates the BA sensing mechanism through HOMO\u2010LUMO band\u2010gap and electron\u2010density analyses, offering new insights into the fluorescence quenching process of Ln\u2010MOFs.\n                  <\/jats:p>","DOI":"10.1002\/chem.202503426","type":"journal-article","created":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T11:29:07Z","timestamp":1767698947000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Waste\u2010to\u2010MOF: Upcycling of Waste Polyimide Into Europium\u2010Based Metal\u2010Organic Framework as Efficient Fluorescence Sensor of Biogenic Amines"],"prefix":"10.1002","volume":"32","author":[{"given":"Wenqing","family":"Rao","sequence":"first","affiliation":[{"name":"Key Laboratory of Material Chemistry For Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Semiconductor Chemistry Center, School of Chemistry and Chemical Engineering Huazhong University of Science and Technology  Wuhan PR China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fang","family":"Chen","sequence":"additional","affiliation":[{"name":"Key Laboratory of Material Chemistry For Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Semiconductor Chemistry Center, School of Chemistry and Chemical Engineering Huazhong University of Science and Technology  Wuhan PR China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4184-6427","authenticated-orcid":false,"given":"Jiang","family":"Gong","sequence":"additional","affiliation":[{"name":"Key Laboratory of Material Chemistry For Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Semiconductor Chemistry Center, School of Chemistry and Chemical Engineering Huazhong University of Science and Technology  Wuhan PR China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,1,6]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodres.2025.115726"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202405812"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhazmat.2024.136445"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.snb.2025.137974"},{"key":"e_1_2_8_6_1","article-title":"A Fluorescent Metal\u2010organic Framework for Food Real\u2010time Visual Monitoring","volume":"33","author":"Wang J.","year":"2021","journal-title":"Advanced Materials"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodchem.2024.138577"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jfca.2023.105935"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodchem.2006.08.028"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsfoodscitech.4c00565"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1134\/S1061934824700138"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.analchem.2c05224"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1039\/D1TC05422H"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodchem.2023.135640"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.snb.2024.136753"},{"key":"e_1_2_8_16_1","article-title":"Steering Photoinduced Electron Transfer in Intramolecular Photocatalysts by Peripheral Ligand Control","author":"Bagemihl B.","year":"2024","journal-title":"Chemistry Europe"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.bios.2014.04.013"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202212980"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.5b00263"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apcatb.2023.123001"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.snb.2025.138232"},{"key":"e_1_2_8_22_1","first-page":"62","article-title":"Understanding MOF Flexibility: An Analysis Focused on Pillared Layer MOFs as a Model System","author":"Senkovska I.","year":"2023","journal-title":"Angewandte Chemie International Edition"},{"key":"e_1_2_8_23_1","first-page":"62","article-title":"Redox\u2010active Mixed\u2010linker Metal\u2010organic Frameworks With Switchable Semiconductive Characteristics for Tailorable Chemiresistive Sensing","author":"Zhou X. 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