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Here, we overcome these limitations through a functional\u2010separation design that yields exceptional radioluminescence in a purely organic system. We have developed ionic phosphonium scintillators integrating thermally activated delayed fluorescence (TADF) cations with heavy\u2010atom\u2010containing organic anions. In this architecture, the organic anions act as sensitizing antennas for x\u2010ray photons, while the TADF cations independently govern the emission process. Upon x\u2010ray excitation, energy is unidirectionally transferred from the heavy anions to the luminophores, followed by efficient triplet harvesting via TADF\u2014delivering materials that achieve photoluminescence quantum yields of up to 81%. Leveraging this molecular design, a highly doped (60\u00a0wt%) transparent screen based on the brominated compound achieves a remarkable spatial resolution of 97.8\u00a0lp\/mm. The imaging screen enables clear visualization of fine structures, such as the internal wiring in electronic chips and a 400\u2010mesh copper grid. By decoupling x\u2010ray absorption from emission, our work establishes a new paradigm for designing solution\u2010processable organic scintillators with high radioluminescence performance, offering a promising pathway toward advanced x\u2010ray imaging applications.<\/jats:p>","DOI":"10.1002\/anie.3693605","type":"journal-article","created":{"date-parts":[[2026,6,18]],"date-time":"2026-06-18T17:12:07Z","timestamp":1781802727000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Decoupling X\u2010Ray Absorption and Emission: Ionic TADF Scintillators With Heavy\u2010Atom\u2010Functionalized Organic Anions"],"prefix":"10.1002","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3048-9129","authenticated-orcid":false,"given":"Dong","family":"Liang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Structural Chemistry, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences  Fuzhou Fujian P.R. China"},{"name":"Xiamen Institute of Rare Earth Materials Chinese Academy of Sciences  Xiamen Fujian P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qing","family":"He","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering Fujian University of Technology  Fuzhou P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1913-8985","authenticated-orcid":false,"given":"Ji\u2010Hui","family":"Jia","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering Fujian University of Technology  Fuzhou P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3477-8457","authenticated-orcid":false,"given":"Xian\u2010Bao","family":"Cai","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Structural Chemistry, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences  Fuzhou Fujian P.R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Song\u2010Bai","family":"Hu","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering Fujian University of Technology  Fuzhou P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8298-4132","authenticated-orcid":false,"given":"Can\u2010Zhong","family":"Lu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Structural Chemistry, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences  Fuzhou Fujian P.R. China"},{"name":"Xiamen Institute of Rare Earth Materials Chinese Academy of Sciences  Xiamen Fujian P.R. 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