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Here we argue that the reported improvements on the optical\/photochemical properties of the new chalcone photoswitches are not substantiated and that the proposed design and data interpretation rely on assumptions that have yet to be validated. We also identify a series of control experiments that can be performed to verify the hypotheses and better support the conclusions presented by the authors.<\/jats:p>","DOI":"10.1002\/anie.202316728","type":"journal-article","created":{"date-parts":[[2024,9,24]],"date-time":"2024-09-24T06:56:08Z","timestamp":1727160968000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Correspondence on \u201cVisible\u2010Light\u2010Switchable Chalcone\u2010Flavylium Photochromic Systems in Aqueous Media\u201d"],"prefix":"10.1002","volume":"63","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0121-3695","authenticated-orcid":false,"given":"Nuno","family":"Bas\u00edlio","sequence":"first","affiliation":[{"name":"LAQV\u2014REQUIMTE, Departamento de Qu\u00edmica, Faculdade de Ci\u00eancias e Tecnologia Universidade Nova de Lisboa  2829-516 Caparica Portugal"}]},{"given":"A. 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