Research Projects

Multi resonance thermally activated delayed fluorescence (TADF) materials have gained significant interest due to their advantages such as synthetic convenience, low cost, metal-free harvesting, and improved photoluminescence quantum yield (PLQY) with narrow emission. New molecular designs using multiple resonance effects of boron and nitrogen atoms enable the localization of HOMO and LUMO on alternate positions of carbon atoms within the same aromatic ring, resulting in improved photoluminescence quantum yield (PLQY) with narrow emission. Organic chiral moieties featuring circularly polarized luminescence (CPL) have gained attention in optoelectronic high-quality 3D displays. However, achieving optimum gPL with good color purity requires significant research. There have been few reports on the development of CP-MR-TADF materials, so achieving CP-MR-TADF with large luminescence dissymmetry factor gPL and high color purity requires substantial research. To address this issue, a proposal is proposed to combine two approaches: integrating chiral moieties into B/N-doped polycyclic aromatic hydrocarbons (PAHs) to result in chiral enantiomers, which provide complementary resonance effect and atomic HOMO-LUMO distribution, resulting in small DEsT, a narrow full width at half-maximum (FWHM), and increased PLQY of 100%. The second method involves post-modification of PAH materials with chiral donor and/or acceptor into CP-MR-TADF materials.