14. Photochromic dinuclear iridium(iii) complexes having phenoxyl-imidazolyl radical complex derivatives
　　Yoshinori Okayasu,Takuya Miyahara, Rintaro Shimada, Yuki Nagai, Akira Sakamoto, Jiro Abe and Yoichi Kobayashi
　　Chem. Commun. 2023, 59, 8850–8853. (DOI:10.1039/D3CC02208K)

13. Ion-Pairing Assemblies of Dithienylnitrophenol-Based π-Electronic Anions Stabilized by Intramolecular Interactions
　　Miyu Yokoyama, Yoshinori Okayasu, Yoichi Kobayashi, Hiroki Tanaka, Yohei Haketa, and Hiromitsu Maeda
　　Org. Lett. 2023, 25, 3676–3681. (DOI:10.1021/acs.orglett.3c01075)

12. Excited State Engineering in Ag29 Nanocluster through Peripheral Modification with Silver(I) Complexes for Bright Near-Infrared Photoluminescence
　　Wataru Ishii, Yoshinori Okayasu, Yoichi Kobayashi, Rika Tanaka, Shohei Katao, Yoshiko Nishikawa, Tsuyoshi Kawai, and Takuya 　　　Nakashima
　　J. Am. Chem. Soc. 2023, 145, 11236–11244. (DOI: 10.1021/jacs.3c01259)

11. Substituent-Dependent Photoexcitation Processes of π-Stacked Ion Pairs
　　Hiroki Tanaka, Yoshinori Okayasu, Yoichi Kobayashi, Hiromitsu Maeda
　　Chem. Eur. J. 2023, 29, e202203957. (DOI: 10.1002/chem.202203957)

10. π-Stacked Ion Pairs: Tightly Associated Charged Porphyrins in Ordered Arrangement Enabling Radical-Pair Formation
　　Hiroki Tanaka, Yoichi Kobayashi, Ko Furukawa, Yoshinori Okayasu, Shigehisa Akine, Nobuhiro Yasuda, and Hiromitsu Maeda
　　J. Am. Chem. Soc. 2022, 144, 21710-21718. (DOI:10.1021/jacs.2c09589)

9. Near-Infrared-Light Triggered Electron Transfer from Ag2S Nanocrystals to Perylene Bisimide
　　Yuki Nagai, Tadashi Watanabe, Daisuke Yoshioka, Yoshinori Okayasu, Naoto Tamai, Yoichi Kobayashi
　　ECS J. Solid State Sci. Technol.2022, 11, 101001. (DOI: 10.1149/2162-8777/ac93b2)

8.Anion-Driven Circularly Polarized Luminescence Inversion of Unsymmetrical Europium(III) Complexes for Target Identifiable 　　　　 Sensing
　　Yoshinori Okayasu, Kota Wakabayashi, Junpei Yuasa*
　　Inorg. Chem.2022, 61, 15108–15115 (DOI: 10.1021/acs.inorgchem.2c02202)

7. Structure Determination of Europium Complexes in Solution Using Crystal-Field Splitting of the Narrow f-f Emission Lines
　　 Yoshinori Okayasu, and Junpei Yuasa*
　　 J. Phys. Chem. Lett.2021, 12, 6867-6874 (DOI:10.1021/acs.jpclett.1c01885)

6. Helix-mediated over 1 nm-range chirality recognition by ligand-to-ligand interactions of dinuclear helicates
　　 Natsumi Suko, Hideki Itamoto, Yoshinori Okayasu, Naoya Okura, and Junpei Yuasa*
　　 Chem. Sci. 2021, 12, 8746–8754 (DOI: 10.1039/D1SC01611C)

5.Visible Circularly Polarized Luminescence of Octanuclear Circular Eu(III) Helicate
　　 Yan Bing Tan, Yoshinori Okayasu, Shohei Katao, Yoshiko Nishikawa, Fumio Asanoma, Mihoko Yamada, Junpei Yuasa and Tsuyoshi Kawai*
　　 J. Am. Chem. Soc. 2020, 142, 17653–17661 (DOI: 10.1021/jacs.0c08229)

4.Design and Synthesis of Cyclometalated Iridium(III) Complexes—Chromophore Hybrids that Exhibit Long-Emission Lifetimes Based on a Reversible Electronic Energy Transfer Mechanism
　　Ayami Kazama, Yuki Imai, Yoshinori Okayasu, Yasuyuki Yamada, Junpei Yuasa, Shin Aoki*
　　Inorg. Chem. 2020, 59, 6905–6922. (DOI: 10.1021/acs.inorgchem.0c00363)

3.Significant Enhancement of Absorption and Luminescence Dissymmetry Factors in the Far-red Region: Zinc(II) Homoleptic Helicate Formed by a Pair of Achiral Dipyrromethene Ligands
　　Hiroaki Ito, Hayato Sakai, Yoshinori Okayasu, Junpei Yuasa, Tadashi Mori, Taku Hasobe*
　　Chem.–Eur. J.2018, 24, 16889-16894. (DOI: 10.1002/chem.201804171)

2.The effect of ligand symmetry on the ratiometric luminescence characteristics of lanthanides
　　Yoshinori Okayasu, Hajime Kamebuchi, and Junpei Yuasa*
　　Dalton Transactions, 2018, 47, 6779-6786. (DOI: 10.1039/c8dt00898a)

1.Evaluation of circularly polarized luminescence in a chiral lanthanide ensemble
　　Yoshinori Okayasu and Junpei Yuasa*
　　Molecular Systems Design & Engineering, 2018, 3, 66-72. (DOI: 10.1039/c7me00082k)