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Boric acid forms a dynamic covalent cross-linked network with hydroxyl groups of CMC and PVA, while PA is tightly immobilized in the matrix through hydrogen bonding and boron-associated coordination interactions, constructing a dense and rigid confined microenvironment. The cellulose-based film exhibits excellent RTP performance, with a phosphorescence lifetime of 2.61 s, an absolute quantum yield of 13.85%, and a visually distinguishable afterglow lasting up to 20 s. Meanwhile, the cross-linked structure endows the material with outstanding mechanical properties (tensile strength of 140 MPa). Additionally, the material displays multiple functional characteristics, including time-resolved information encryption, water-rewritable capability, and reversible responsiveness to humidity and pH.<\/jats:p>","DOI":"10.1021\/acs.biomac.6c01086","type":"journal-article","created":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T14:02:38Z","timestamp":1785852158000},"page":"6111-6120","source":"Crossref","is-referenced-by-count":0,"title":["Long-Lived Room-Temperature Phosphorescent Cellulose\nMaterials with Dynamic Cross-Linking"],"prefix":"10.1021","volume":"27","author":[{"given":"Lei","family":"Luo","sequence":"first","affiliation":[{"name":"Jiangnan University , , 1800 Lihu Road , ,","place":["Wuxi, China, 214122"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huiyu","family":"Bai","sequence":"additional","affiliation":[{"name":"Jiangnan University , , 1800 Lihu Road , ,","place":["Wuxi, China, 214122"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ting","family":"Li","sequence":"additional","affiliation":[{"name":"Jiangnan University , , 1800 Lihu Road , ,","place":["Wuxi, China, 214122"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2391-7201","authenticated-orcid":true,"given":"Xuhui","family":"Zhang","sequence":"additional","affiliation":[{"name":"Jiangnan University , , 1800 Lihu Road , ,","place":["Wuxi, China, 214122"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6373-3450","authenticated-orcid":true,"given":"Jing","family":"Huang","sequence":"additional","affiliation":[{"name":"Jiangnan University , , 1800 Lihu Road , ,","place":["Wuxi, China, 214122"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shibo","family":"Wang","sequence":"additional","affiliation":[{"name":"Jiangnan University , , 1800 Lihu Road , ,","place":["Wuxi, China, 214122"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7875-9111","authenticated-orcid":true,"given":"Yang","family":"Wang","sequence":"additional","affiliation":[{"name":"Jiangnan University , , 1800 Lihu Road , ,","place":["Wuxi, China, 214122"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7432-8362","authenticated-orcid":true,"given":"Weifu","family":"Dong","sequence":"additional","affiliation":[{"name":"Jiangnan University , , 1800 Lihu Road , ,","place":["Wuxi, China, 214122"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,7,31]]},"reference":[{"issue":"6","key":"2026091407065280300_cit1","doi-asserted-by":"publisher","first-page":"406","DOI":"10.1038\/s41566-019-0408-4","article-title":"Colour-tunable\nultra-long organic phosphorescence of a single-component molecular\ncrystal","volume":"13","author":"Gu","year":"2019","journal-title":"Nat. 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