{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T07:00:40Z","timestamp":1790233240476,"version":"4.1.0"},"reference-count":67,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T00:00:00Z","timestamp":1790121600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T00:00:00Z","timestamp":1790121600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100011697","name":"R\u00e9gion Bretagne","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100011697","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000781","name":"European Research Council","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000781","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The development of purely organic chiral room temperature (RT) phosphorescent emitters is in the limelight. However, the key parameters governing the polarized luminescence are difficult to predict and rationalize since the phosphorescence emission is rarely obtained in solution, despite the introduction of heavy atoms (Br, I) or carbonyl groups, and engineering of total angular momentum, for example, singlet\/triplet states corresponding to n\u2010\u03c0*\/\u03c0\u2010\u03c0* transitions (or vice\u2010versa), as prescribed by El\u2010Sayed's rule. Here, we show that intramolecular secondary interactions can induce an efficient ISC between formally identical\n                    <jats:sup>1<\/jats:sup>\n                    (n,\u03c0*) and\n                    <jats:sup>3<\/jats:sup>\n                    (n,\u03c0*) states in chiral thionated phthalimide derivatives. This unprecedented type of inter\u2010system crossing (ISC) extends the usual thinking of the El\u2010Sayed principle and enables the realization of circularly polarized (CP) RT phosphorescence (RTP) in solution with\n                    <jats:italic>g<\/jats:italic>\n                    <jats:sub>lum<\/jats:sub>\n                    of up to 4 \u00d7 10\n                    <jats:sup>\u22123<\/jats:sup>\n                    . These results bring additional molecular design guidelines to reach CP\u2010RTP in solution and offer new insights into the subtle relationships between excited states of different spin multiplicities that enable higher CP phosphorescence intensity.\n                  <\/jats:p>","DOI":"10.1002\/anie.8360226","type":"journal-article","created":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T06:17:28Z","timestamp":1790230648000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Extending El Sayed's Rule by\n                    <sup>1<\/sup>\n                    (n,\u03c0*)\u2013\n                    <sup>3<\/sup>\n                    (n,\u03c0*) Rotation via Intramolecular Secondary Interaction Enables Room\u2010Temperature Circularly Polarized Phosphorescence in Solution"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-0463-4952","authenticated-orcid":false,"given":"Oscar","family":"Charpentier","sequence":"first","affiliation":[{"name":"ISCR \u2013 UMR CNRS 6226 Universit\u00e9 de Rennes, CNRS  Rennes France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-6768-7847","authenticated-orcid":false,"given":"Marie","family":"Guesdon","sequence":"additional","affiliation":[{"name":"ISCR \u2013 UMR CNRS 6226 Universit\u00e9 de Rennes, CNRS  Rennes France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Catherine","family":"Demangeat","sequence":"additional","affiliation":[{"name":"ISCR \u2013 UMR CNRS 6226 Universit\u00e9 de Rennes, CNRS  Rennes France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maher","family":"Hojorat","sequence":"additional","affiliation":[{"name":"ISCR \u2013 UMR CNRS 6226 Universit\u00e9 de Rennes, CNRS  Rennes 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France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5618-226X","authenticated-orcid":false,"given":"Nicolas","family":"Galland","sequence":"additional","affiliation":[{"name":"CEISAM UMR 6230 Nantes Universit\u00e9 CNRS  Nantes France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4217-0708","authenticated-orcid":false,"given":"Denis","family":"Jacquemin","sequence":"additional","affiliation":[{"name":"CEISAM UMR 6230 Nantes Universit\u00e9 CNRS  Nantes France"},{"name":"Institut Universitaire de France (IUF)  Paris France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7847-2911","authenticated-orcid":false,"given":"Ludovic","family":"Favereau","sequence":"additional","affiliation":[{"name":"ISCR \u2013 UMR CNRS 6226 Universit\u00e9 de Rennes, CNRS  Rennes 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