A02 Hayato Sakai

Hayato Sakai

Participating A02


Department of Chemistry, Faculty of Science and Technology, Keio University


Assistant Professor



Research Project

Construction of Chirality-Controllable MOF Possessing Singlet Fission Property for New Photofunctional Materials


Taku Hasobe (Associate Professor, Department of Chemistry, Faculty of Science and Technology, Keio University)


MOFs are one of porous materials, which are useful platform for construction of optoelectronics materials because photofunctional organic compounds can be introduced as ligands into the structures. Especially, MOF can be easily changed in the characteristics by an exclusive property shown by axial ligands called ligand exchange unlike other materials. So that means that the use of chiral ligands as the axial ligands also allows control of the chiral properties of porous space in MOFs. On the other hand, singlet fission is one of multi-exciton generation dynamics due to generating two excitons from one photon. Since the value of quantum yield reaches up to 200%, efficiency of the general reaction can be significantly increased. In this project, by collaboration of singlet fission and control of symmetry using ligand exchange, we will develop new photofunctinal space in MOF.


Research Areas

Organic Chemistry, Supramolecular Chemistry, Photochemistry


Singlet Fission, Metal-Organic Frameworks, Host-Guest Chemistry


[3] Inter- and Intramolecular Electron-Transfer Reduction Properties of Coronenediimide Derivatives via Photoinduced Processes,
Motoki Yoshida; Hayato Sakai; Kei Ohkubo; Shunichi Fukuzumi; Taku Hasobe, J. Phys. Chem. C, 121, , 2017
DOI: 10.1021/acs.jpcc.7b09817.
[2] Control of the electrochemical and photophysical properties of N-substituted benzo[ghi]perylene derivatives,
Kokichi Tokuo; Hayato Sakai; Tomo Sakanoue; Taishi Takenobu; Yasuyuki Araki; Takehiko Wada; Taku Hasobe, Mater. Chem. Front. , 1, 2299 - 2308 , 2017
DOI: 10.1039/C7QM00301C.
[1] Synthesis, Structural and Photophysical Properties of Pentacene Alkanethiolate Monolayer-Protected Gold Nanoclusters and Nanorods: Supramolecular Intercalation and Photoinduced Electron Transfer with C60,
Daiki Kato; Hayato Sasaki; Toshiyuki Saegusa; Nikolai V. Tkachenko; Taku Hasobe, J. Phys. Chem. C, 121, 16, 9043 - 9052, 2017
DOI: 10.1021/acs.jpcc.7b01164.