• • The R/S-Eu(TTA)3DFPO enantiomers exhibit a photoluminescence quantum yield of 43% and a narrowband red emission at 617 nm with a full width at half maximum of 11 nm, enabling high color purity for display applications.
• • The |g_PL| value reaches 8.0 × 10^-3 at 590 nm (5D0→7F1 transition), demonstrating significant chiroptical activity in solution, which is essential for 3D display technologies.
• • Vacuum-deposited CP-OLEDs achieve a maximum external quantum efficiency of 4.0% and |g_EL| values above 1.0 × 10^-2, indicating that the chiral Eu(III) complexes can be effectively integrated into device architectures without compromising efficiency.
• • The use of point-chiral phosphine-oxide ancillary ligands ensures coordination stability, as evidenced by the successful fabrication of CP-OLEDs, addressing the bottleneck of maintaining chirality and stability in lanthanide complexes for practical applications.