Excited state reversal in copper iodide clusters enables 100% exciton radiation.

ABSTRACT: The non-radiative metallic core (MC) centered lowest excited states of most ligand-stabilized metallic clusters commonly quench radiative but high-lying ligand-centered excited states, e.g. intra-ligand charge transfer (LCT), which is one of the key issues limiting efficiencies of electroluminescent (EL) clusters. Herein, we realize the desired excited state reversal in a cubic [PXZDBFDP]₂Cu₄I₄ (PXZDBFDP = 10-(4,6-bis(diphenylphosphino)dibenzo[b,d]furan-2-yl)-10H-phenoxazine) modified with strongly electron-donating phenoxazine (PXZ) to strengthen donor-acceptor (D-A) interactions and enhance LCT. Consequently, its thoroughly LCT-featured first singlet (S₁) and triplet (T₁) excited states are energetically lower than its Cu₄

SUBMITTER: Meng Y 

PROVIDER: S-EPMC12830983 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature