{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T02:49:46Z","timestamp":1793242186557,"version":"4.5.0"},"reference-count":49,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2025,11,19]],"date-time":"2025-11-19T00:00:00Z","timestamp":1763510400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,11,19]],"date-time":"2025-11-19T00:00:00Z","timestamp":1763510400000},"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":["22401274"],"award-info":[{"award-number":["22401274"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["U23B6011"],"award-info":[{"award-number":["U23B6011"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2026,1,16]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The challenges of photodegradable polyolefins, which have attracted much attention, persist in achieving controlled synthesis, efficient degradation, and chemical upcycling. Here, we report an all\u2010carbon\u2010backbone photodegradable polyethylene (PE) incorporating\n                    <jats:italic>on\u2010chain<\/jats:italic>\n                    ketones through coordination\u2013insertion copolymerization of ethylene and the optimal phenyl vinyl ketone (PVK). This strategy enables precise control over the chain structure, including PVK dispersed distribution (0.3\u20138.3 mol%), saturated C\n                    <jats:sup>sp3\u2013<\/jats:sup>\n                    C\n                    <jats:sup>sp3<\/jats:sup>\n                    backbone, and enhanced surface properties while retaining thermomechanical properties. Crucially, this is the first report that achieves the quantitative conversion (100%) of ketone units in photodegradable PE under ambient UVA light (\n                    <jats:italic>\u03bb<\/jats:italic>\n                    = 390\u2013395\u00a0nm) with high efficiency. Mechanistic studies on photodegradation reveal two competitive pathways: Norrish Type II scission and Norrish\u2013Yang cyclization (\u223c50% for each), yielding well\u2010defined telechelic PE oligomers. These insights allow predictable control over molecular weight of degraded product, enabling tailored polymer design. Photodegradation coupled with in situ thiol\u2010ene click chemistry generates hydroxyl\u2010terminated telechelic PE oligomers, which are upcycled into PLA\u2013PE\u2013PLA triblock copolymers, exhibiting excellent compatibility in HDPE\/PLA blends. This work bridges the gap between PE degradation and upcycling, unifying customizable synthesis, controlled degradation, and value\u2010added upcycling into a single platform for sustainable polyolefins.\n                  <\/jats:p>","DOI":"10.1002\/anie.202520230","type":"journal-article","created":{"date-parts":[[2025,11,20]],"date-time":"2025-11-20T07:30:06Z","timestamp":1763623806000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Synthesis and Upcycling of All\u2010Carbon\u2010Backbone Degradable Polyethylene with Dispersed On\u2010Chain Ketones"],"prefix":"10.1002","volume":"65","author":[{"given":"Dian","family":"Yang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Polymer Science and Technology Changchun Institute of Applied Chemistry Chinese Academy of Sciences  Renmin Street 5625 Changchun 130022 China"},{"name":"School of Applied Chemistry and Engineering University of Science and Technology of China  Hefei 230026 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuxing","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Polymer Science and Technology Changchun Institute of Applied Chemistry Chinese Academy of Sciences  Renmin Street 5625 Changchun 130022 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2627-454X","authenticated-orcid":false,"given":"Zhongbao","family":"Jian","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Polymer Science and Technology Changchun Institute of Applied Chemistry Chinese Academy of Sciences  Renmin Street 5625 Changchun 130022 China"},{"name":"School of Applied Chemistry and Engineering University of Science and Technology of China  Hefei 230026 China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,11,19]]},"reference":[{"key":"e_1_2_8_1_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.3c00587"},{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.progpolymsci.2023.101713"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4CS00663A"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202424529"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586-020-03149-9"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41893\u2010025\u201001524\u2010w"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.accounts.3c00811"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202415707"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/s44160\u2010022\u201000163\u20109"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010024\u201045219\u2010w"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.adh3353"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.4c15910"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.3c12660"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010024\u201052850\u20100"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41557\u2010025\u201001753\u20108"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5c09003"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1039\/c3gc42592d"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202315085"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.31635\/ccschem.024.202404170"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcat.2022.12.020"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.3c00769"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.abi8183"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.5c00935"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1093\/nsr\/nwad039"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202410885"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202110957"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5c01664"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.2c04563"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.31635\/ccschem.023.202303275"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202301927"},{"key":"e_1_2_8_31_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.4c08958"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.31635\/ccschem.023.202303272"},{"key":"e_1_2_8_33_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.macromol.4c00580"},{"key":"e_1_2_8_34_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.2c04499"},{"key":"e_1_2_8_35_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.4c07458"},{"key":"e_1_2_8_36_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.4c07445"},{"key":"e_1_2_8_37_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsmacrolett.5c00476"},{"key":"e_1_2_8_38_1","doi-asserted-by":"publisher","DOI":"10.1021\/cr940282j"},{"key":"e_1_2_8_39_1","doi-asserted-by":"publisher","DOI":"10.1021\/om9008235"},{"key":"e_1_2_8_40_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chempr.2020.11.020"},{"key":"e_1_2_8_41_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.3c07186"},{"key":"e_1_2_8_42_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010024\u201053506\u20109"},{"key":"e_1_2_8_43_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5c09549"},{"key":"e_1_2_8_44_1","doi-asserted-by":"publisher","DOI":"10.1021\/ma60002a012"},{"key":"e_1_2_8_45_1","doi-asserted-by":"publisher","DOI":"10.1039\/b909353b"},{"key":"e_1_2_8_46_1","doi-asserted-by":"publisher","DOI":"10.1007\/s43630\u2010020\u201000003\u20109"},{"key":"e_1_2_8_47_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.atmosenv.2023.119905"},{"key":"e_1_2_8_48_1","doi-asserted-by":"publisher","DOI":"10.1002\/macp.201400454"},{"key":"e_1_2_8_49_1","doi-asserted-by":"publisher","DOI":"10.1039\/D1PY00819F"}],"container-title":["Angewandte Chemie International Edition"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/anie.202520230","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/anie.202520230","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/anie.202520230","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,9]],"date-time":"2026-04-09T14:51:33Z","timestamp":1775746293000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/anie.202520230"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,11,19]]},"references-count":49,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026,1,16]]}},"alternative-id":["10.1002\/anie.202520230"],"URL":"https:\/\/doi.org\/10.1002\/anie.202520230","archive":["Portico"],"relation":{},"ISSN":["1433-7851","1521-3773"],"issn-type":[{"value":"1433-7851","type":"print"},{"value":"1521-3773","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,11,19]]},"assertion":[{"value":"2025-09-15","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-11-10","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-11-19","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e20230"}}