Tatsuya Tsukuda received a Ph.D. degree in 1994 from The University of Tokyo. After postdoctoral research at RIKEN, he was appointed Assistant Professor at The University of Tokyo in 1994, and in 2000 he became an Associate Professor at the Institute for Molecular Science in Okazaki. He was promoted to Professor at the Catalysis Research Center of Hokkaido University in 2007, before moving to The University of Tokyo in 2011. His research interests cover the atomically-precise synthesis and characterization of gold clusters protected by ligands and their catalytic applications. He has received the CSJ Award for Creative Work from Chemical Society of Japan (CSJ) in 2009. He has admitted as the fellow of Royal Society of Chemistry (RSC) in 2019 and serving as the senior editor of the Journal of Physical Chemistry Letters (American Chemical Society) since 2021.
Chemically modified gold superatoms as nanoscale artificial element
Gold clusters, consisting of a few to a hundred gold atoms, have attracted growing attention as building units of novel functional materials because they exhibit unique physicochemical properties due to their discrete electronic structures and non-fcc atomic packing structures. Recent progress in atomically precise synthesis, X-ray crystallography and theoretical calculations  has revealed that the ligand-protected Au clusters can be viewed as “chemically modified Au superatoms" owing to the atom-like electronic shell structures. For example, the magic stability of the icosahedral M@Au12 core is associated with a closed electron configuration (1S)2(1P)6, similarly to that of noble gases. A unique feature of the superatoms compared to the conventional atoms is that their properties can be controlled by a variety of factors such as the number of constituent atoms, composition, shape, and surface modification [2, 3]. Our research goal is to systematize the superatoms as nano-scale artificial elements in the form of a periodic table. In this talk, I will discuss the correlation between the structures and properties of these superatoms [4, 5] and introduce chemical transformations for the synthesis of higher-order structures such as pseudo-molecules of superatoms (superatomic molecules) [6, 7].
 Omoda, T.; Takano, S.; Tsukuda, T. Small 2021, 17, 2001439.
 Hirai, H.; Ito, S.; Takano, S.; Koyasu, K.; Tsukuda, T. Chem. Sci. 2020, 11, 12233–12248.
 Takano, S.; Tsukuda, T. J. Am. Chem. Soc. 2021, 143, 1683–1698.
 Takano, S.; Hirai, H.; Nakashima, N.; Iwasa, T.; Taketsugu, T.; Tsukuda, T. J. Am. Chem. Soc. 2021, 143, 10560–10564.
 Hasegawa, S.; Takano, S.; Harano, K.; Tsukuda, T. JACS Au 2021, 1, 660–668.
 Takano, S.; Hasegawa, S.; Suyama, M.; Tsukuda, T. Acc. Chem. Res. 2018, 51, 3074–3083.
 Ito, E.; Takano, S.; Nakamura, T.; Tsukuda, T. Angew. Chem., Int. Ed. 2021, 60, 645–649.