• • The binary co-assembly (F8QX)0.7-(R/S-5011)0.3 achieves a |g_lum| of 0.52, the highest reported for fluorene-based co-assemblies, enabling efficient chirality transfer for applications in chiroptical displays and encryption.
• • Increasing fluorene content reduces the dissymmetry factor: F8QX-III (highest fluorene ratio) yields lower |g_lum| than F8QX, indicating that lower fluorene ratios promote tighter π–π stacking and enhanced chirality amplification, as confirmed by XRD and MD simulations.
• • Ternary co-assembly with DBN-ICZ (0.5 wt%) exhibits narrowband green emission with FWHM = 25 nm and a high photoluminescence quantum yield (PLQY) of 80%, while maintaining a |g_lum| of 0.43, demonstrating efficient FRET without compromising chiroptical performance.
• • CP-OLEDs fabricated with (F8QX)0.7-(R/S-5011)0.3-(DBN-ICZ)0.005 as the emitting layer show narrowband electroluminescence (FWHM = 30 nm) and a |g_EL| of 0.12, validating the practical potential of these materials in circularly polarized OLEDs.