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Relatively, their fluorescence signal change, which should be more sensitive, has always been inefficient, resulting from inherent challenges in excited\u2010state dynamics. Here, we present a charge\u2010rearrangement averaged dye design, instead of traditional donor\u2010acceptor structures, to enable a high locally excited or twisted intramolecular charge transfer emission efficiency. A ratiometric dual\u2010fluorescence behavior can be observed along with a solvent\u2010dependent emission trade\u2010off rather than complete quenching. In this case, the dyes can not only precisely visualize various mixed solvents but also enable heterogeneous detection with over hundreds of reuse cycles after being integrated into a crosslinked polymer. The leading portable material achieves a self\u2010calibrated visual tracking of ethanol content (error&lt;0.2%) with a robust working curve (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.9992) while applied to E10 ethanol gasoline, operable via user\u2010friendly software analysis through mobile phone photography.<\/jats:p>","DOI":"10.1002\/anie.202513349","type":"journal-article","created":{"date-parts":[[2025,8,22]],"date-time":"2025-08-22T12:33:33Z","timestamp":1755866013000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Charge\u2010Rearrangement Averaged Dye Design for Precise, Real\u2010Time, and Portable Monitoring of Complex Solvent Environments"],"prefix":"10.1002","volume":"64","author":[{"given":"Zhongyu","family":"Li","sequence":"first","affiliation":[{"name":"State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University  Shanghai 200438 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Smruti R.","family":"Sahoo","sequence":"additional","affiliation":[{"name":"Laboratory of Organic Electronics Department of Science and Technology Link\u00f6ping University  Norrk\u00f6ping 60174 Sweden"},{"name":"Department of Physics and Astronomy Uppsala University  Box 516 Uppsala SE\u2010751 20 Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shen","family":"Shen","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University  Shanghai 200438 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Sun","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University  Shanghai 200438 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hans","family":"\u00c5gren","sequence":"additional","affiliation":[{"name":"Department of Physics and Astronomy Uppsala University  Box 516 Uppsala SE\u2010751 20 Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Man","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University  Shanghai 200438 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gleb","family":"Baryshnikov","sequence":"additional","affiliation":[{"name":"Laboratory of Organic Electronics Department of Science and Technology Link\u00f6ping University  Norrk\u00f6ping 60174 Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6268-3351","authenticated-orcid":false,"given":"Liangliang","family":"Zhu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University  Shanghai 200438 China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,8,22]]},"reference":[{"key":"e_1_2_7_1_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41592-021-01116-4"},{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.4c05538"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202111623"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/ceat.201900110"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1080\/15422119.2014.918884"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.molliq.2023.123135"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41560-018-0175-3"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41560-018-0264-3"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-022-30850-2"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.combustflame.2008.10.011"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fuel.2010.03.018"},{"key":"e_1_2_7_12_1","first-page":"998","volume":"17","author":"Ojapah M. 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