ArticleJournal of the American Chemical Society2026
Thermally Activated Delayed Fluorescence Hybrid Copper(I) Iodide Scintillator for Fast Neutron and X-ray Imaging.
Article in Journal of the American Chemical Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
16 authors.
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Abstract
Developing high-performance dual imaging applications, such as fast neutron and X-ray applications, using a single material presents a very significant challenge across chemistry, material science, physics, and engineering. Integrating both imaging capabilities into a single material for specialized detection applications will simplify device design and significantly reduce overall detection costs. This work represents the first demonstration of a lead-free system designed for high-performance dual imaging applications. It features a multifunctional hybrid copper(I) iodide scintillator, in which hydrogen-rich and luminescent units are synergistically coupled at the molecular level, enabling the simultaneous imaging of fast neutrons and X-rays. The perfect synergy of exciton confinement and thermally activated delayed fluorescence (TADF) effects empowers this material with exceptional dual imaging capabilities. The confined structure formed by heavy-atom modules at the core imparts a high exciton binding energy, suppressing the nonradiative recombination of excitons. The TADF mechanism channels phonons generated by high-energy radiation into the radiative recombination process. Additionally, the lack of self-absorption guarantees efficient photon utilization. Leveraging these properties, the material achieves an impressive X-ray light yield of approximately 42,000 photons/MeV and an exceptional spatial resolution of 25.8 lp/mm for X-ray imaging, surpassing most commercial scintillators available in the X-ray market. Furthermore, the material demonstrates an outstanding spatial resolution of 1.47 lp/mm in fast neutron imaging, representing the best level reported to date for a Pb-free scintillator. This environmentally friendly and high-performance multifunctional scintillator significantly advances next-generation scintillation materials, presenting exciting opportunities for high-precision and dual imaging applications at a low cost.
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Registered trials
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