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Here, we report on two iodocuprate hybrids (HO<jats:sub>2<\/jats:sub>C(CH<jats:sub>2<\/jats:sub>)<jats:italic><jats:sub>n<\/jats:sub><\/jats:italic><jats:sub>\u20101<\/jats:sub>NH<jats:sub>3<\/jats:sub>)CuI<jats:sub>2<\/jats:sub> (<jats:italic>n<\/jats:italic>\u00a0=\u00a03, 4) exhibiting excitation\u2010wavelength\u2010dependent emission. The thermodynamically stable <jats:italic>n<\/jats:italic>\u00a0=\u00a04 compound (2D\u2010C4) is based on a rare 2D iodocuprate network, while a more common 1D network of edge\u2010sharing tetrahedra is found both in the <jats:italic>n<\/jats:italic>\u00a0=\u00a03 compound (1D\u2010C3) and in the metastable <jats:italic>n<\/jats:italic>\u00a0=\u00a04 (1D\u2010C4) hybrid. Depending on the excitation wavelength, 2D\u2010C4 and 1D\u2010C3 hybrids exhibit yellow emission, red emission, or white light emission\u2014resulting from the emission of both components,\u2014while 1D\u2010C4 does not emit in the red region. The description of the electronic structure based on density functional theory (DFT) indicates two different origins for the emissions of 2D\u2010C4 and 1D\u2010C3, in particular from iodide vacancies (red emission), which involve mid\u2010gap states. The emission of 2D\u2010C4 can also be modulated from red to yellow depending on applied pressure. 2D\u2010C4 also has an exceptionally low congruent melting temperature of 110 \u00b0C, allowing the solvent\u2010free preparation of thin films. Finally, phosphor\u2010converted\u2010LED based on 2D\u2010C4 have been prepared, showing that either pink or nearly white emission is produced.<\/jats:p>","DOI":"10.1002\/anie.202506827","type":"journal-article","created":{"date-parts":[[2025,8,19]],"date-time":"2025-08-19T13:50:25Z","timestamp":1755611425000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Excitation\u2010Wavelength\u2010Dependent Emission of Congruently Melting Iodocuprate Hybrid Materials"],"prefix":"10.1002","volume":"64","author":[{"given":"Cl\u00e9mence","family":"Cazals","sequence":"first","affiliation":[{"name":"MOLTECH\u2010ANJOU UMR\u2010CNRS 6200 Universit\u00e9 d'Angers  2 Bd Lavoisier Angers 49045 France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0458-0789","authenticated-orcid":false,"given":"Nicolas","family":"Mercier","sequence":"additional","affiliation":[{"name":"MOLTECH\u2010ANJOU UMR\u2010CNRS 6200 Universit\u00e9 d'Angers  2 Bd Lavoisier Angers 49045 France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Magali","family":"Allain","sequence":"additional","affiliation":[{"name":"MOLTECH\u2010ANJOU UMR\u2010CNRS 6200 Universit\u00e9 d'Angers  2 Bd Lavoisier Angers 49045 France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8722-0417","authenticated-orcid":false,"given":"Chiara","family":"Botta","sequence":"additional","affiliation":[{"name":"CNR. Via Corti 12 Istituto di Scienze e Tecnologie Chimiche \u201cG. 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