What's New 2022.11.30 Paper A paper entitled “Facile dimerization strategy for producing narrowband green multi-resonance delayed fluorescence emitters” by Yang et al. has been published in J. Mater. Chem. C. 2022.11.18 Paper Our work has been featured on the Cover Picture of Adv. Optical Mater. (22/2022) 2022.11.15 Paper A review entitled “Indoor photovoltaic energy harvesting based on semiconducting π-conjugated polymers and oligomeric materials toward future IoT applications” by Hwang and Yasuda has been published in Polym. J. 2022.9.23 Paper A review entitled “Narrowband emissive thermally activated delayed fluorescence materials” by Kim and Yasuda has been published in Adv. Optical Mater. (the Hall of Fame series). 2022.7.14 Seminar A special seminar by Prof. Partha Hazra (IISER, India) was held in Inamori Center. 2022.5.27 Paper A paper entitled “Ultrafast triplet–singlet exciton interconversion in narrowband blue organoboron emitters doped with heavy chalcogens” by Park et al. has been published in Angew. Chem. Int. Ed. 2022.5.12 Paper A paper entitled “Blue thermally activated delayed fluorescence with sub-microsecond short exciton lifetimes: Acceleration of triplet–singlet spin interconversion via quadrupolar charge-transfer states” by Min et al. has been published in Adv. Optical Mater. 2022.3.21 Paper A paper entitled “Axially chiral 1,1’-bicarbazolyls with near-ultraviolet circularly polarized luminescence” by Shikita et al. has been published in Chem. Commun. 2022.3.20 Information The website of Yasuda Lab has been renewed.