Development of Metal Cluster Chemistry Using π-Metal Orbital Interaction

In order to develop anisotropic functions by assembling isotropic nanoparticles, it is necessary to introduce anisotropic binding sites into isotropic nanoparticles. For this purpose, a regulated number of organic molecules should be coordinated on nanoparticles. In addition, to create innovative functions by integrating the functions of organic molecules and inorganic nanoparticles (e.g., low-resistance organic-inorganic interface, etc.), it is desirable to connect both of them electronically. Such a function can be realized by planar coordination of macrocyclic π-conjugated molecules on the nanoparticle surface.


Porphyrin-Au Nanoparticles & Clusters


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Platonic Hexahedron Composed of Six Organic Faces with an Inscribed Au Cluster （J. Am. Chem. Soc. 2012, 134, 816.）
Strongest π-Metal Orbital Coupling in a Porphyrin/Gold Cluster System （Chem. Sci. 2014, 5, 2007.）
Porphyrin Derivative-Protected Gold Cluster with a Pseudotetrahedral Shape （J. Phys. Chem. C 2017, 121, 10760.）
Ligand Effect on the Catalytic Activity of Gold Clusters in the Electrochemical Hydrogen Evolution Reaction （Chem. Sci. 2018, 9, 261.）
Impact of Orbital Hybridization at Molecular-Metal Interface on Carrier Dynamics （J. Phys. Chem. C 2019, 123, 25877. (Cover Picture)）