Efficient Red Electroluminescent Copper Complexes with Fluorination-Balanced Dual Emission.

ABSTRACT: Copper complexes hold a promise for electroluminescent applications, owing to their dual emissive feature based on the moderate spin-orbital coupling effect of Cu⁺ ion for controllable singlet-triplet conversion. However, efficient red dual emission from copper complexes remains an important challenge, because emission wavelengths and thermally activated delayed fluorescence (TADF)/phosphorescence (PH) ratios are simultaneously correlated to electronic effects. Herein, fluorine atoms with suitable electron-withdrawing inductive effect were introduced into a typical tridentate phosphine ligand coordinated CuI skeleton, namely, TTPPCuI, to reduce the lowest unoccupied molecular orbital (LUMO) energy levels, giving rise to narrowed energy gaps between the highest occupied molecular

SUBMITTER: Lou X 

PROVIDER: S-EPMC12799920 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature