Intramolecular charge transfer enables highly-efficient X-ray luminescence in cluster scintillators.

ABSTRACT: Luminescence clusters composed of organic ligands and metals have gained significant interests as scintillators owing to their great potential in high X-ray absorption, customizable radioluminescence, and solution processability at low temperatures. However, X-ray luminescence efficiency in clusters is primarily governed by the competition between radiative states from organic ligands and nonradiative cluster-centered charge transfer. Here we report that a class of Cu₄I₄ cubes exhibit highly emissive radioluminescence in response to X-ray irradiation through functionalizing biphosphine ligands with acridine. Mechanistic studies show that these clusters can efficiently absorb radiation ionization to generate electron-hole pairs and transfer them to ligands during therm

SUBMITTER: Zhang N 

PROVIDER: S-EPMC10203249 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature