Original Papers

35. "Viologen-radical-driven Hydrogen Evolution from Water Catalyzed by Co-NHC Catalysts: Radical Scavenging by Nitrate and Volmer-Heyrovsky-like CPET Pathway"
    Kosei Yamauchi*, Ken Kawano, Koichi Yatsuzuka, Kaori Kawamura, and Ken Sakai*
    ChemRxiv, DOI: 10.26434/chemrxiv-2024-lnz4f-v2.


34. "Water-induced Switching in Selectivity and Steric Control of Activity in Photochemical CO₂ Reduction Catalyzed by RhCp*(bpy) Derivatives"
    Dongseb Lee, Kosei Yamauchi*, and Ken Sakai*
    J. Am. Chem. Soc., 2024, Published Online.
    (ChemRxiv, DOI: 10.26434/chemrxiv-2024-t3ltd-v4.)


33. "Mechanism of Ni-NHC CO₂ Reduction Catalysis Predominantly Affording Formate via Attack of Metal Hydride to CO₂"
    Chen Liao, Kosei Yamauchi*, and Ken Sakai*
    ACS Catal., 2024, 14, 11131-11137.
    (ChemRxiv, DOI: 10.26434/chemrxiv-2024-cv7jt.)


32. "Isolating an Inner-Sphere Adduct of [Ru^IV(=O)(terpy)(bpy)]²⁺ and [Ce^IV(OH)(NO₃)₅]²⁻ with the Oxo Bonded to the Ce^IV Center"
    Yutaro Aimoto, Alexander Parent*, Kosei Yamauchi*, and Ken Sakai*
    J. Am. Chem. Soc., 2024, 146, 16866-16877.
    (ChemRxiv, DOI: 10.26434/chemrxiv-2024-vlcxx.)


31. "Synthesis of the MN Ring of Caribbean Ciguatoxin C-CTX-1 via Desymmetrization by Acetal Formatione"
    Masahiro Kaneko, Atsuhiro Yamashita, Yoko Yasuno, Kosei Yamauchi, Ken Sakai, and Tohru Oishi*
    Org. Lett., 2024, 26, 855-859.


30. "Precious-Metal-Free CO₂ Photoreduction Boosted by Dynamic Coordinative Interaction between Pyridine-Tethered Cu(I) Sensitizers and a Co(II) Catalyst"
    Jia-Wei Wang*, Xian Zhang, Lucia Velasco, Michael Karnahl, Zizi Li, Zhi-Mei Luo, Yanjun Huang, Jin Yu, Wenhui Hu, Xiaoyi Zhang, Kosei Yamauchi, Ken Sakai*, Dooshaye Moonshiram*, and Gangfeng Ouyang*
    JACS Au, 2023, 3, 1984-1997.


29. "Intracluster O-O Coupling Pathway Evidenced for an Anderson-type Single-Cobalt Polymolybdate Water Oxidation Catalyst"
    Natsuki Taira, Kosei Yamauchi, and Ken Sakai*
    ACS Catal., 2023, 13, 3211-3223.


28. "Controlling the Photofunctionality of a Polyanionic Heteroleptic Copper(I) Photosensitizer for CO₂ Reduction Using Its Ion-pair Formation with Polycationic Ammonium in Aqueous Media"
    Fumika Sueyoshi, Xian Zhang, Kosei Yamauchi, and Ken Sakai*
    Angew. Chem. Int. Ed., 2023, 62, e202217807.


27. "Theoretical Study on the Mechanism of Hydrogen Evolution Reaction Catalyzed by Platinum Subnanoclusters"
    Keita Kuge, Kosei Yamauchi and Ken Sakai*
    Dalton Trans., 2023, 52, 583-597. (Selected as a Hot Article.) Open Access!
    (ChemRxiv, DOI: 10.26434/chemrxiv-2022-vnnc7-v2.)


26. "Visible-Light-Driven Reduction of CO₂ to CO in Fully Aqueous Media using a Water-Soluble Cobalt Porphyrin"
    Arnau Call*, Mihaela Cibian, Kosei Yamauchi* and Ken Sakai*
    Sustainable Energy Fuels, 2022, 6, 2160-2164.


25. "Catalysis of CO₂ reduction by diazapyridinophane complexes of Fe, Co, and Ni: CO₂ binding triggered by combined frontier MO associations involving a SOMO"
    Yuto Sakaguchi, Arnau Call, Kosei Yamauchi, and Ken Sakai*
    Dalton Trans., 2021, 50, 15983-15995. (Selected as a Cover Picture and a Hot Article.)


24. "Earth-Abundant Photocatalytic CO₂ Reduction by Multielectron Chargeable Cobalt Porphyrin Catalysts: High CO/H₂ Selectivity in Water Based on Phase Mismatch in Frontier MO Association"
    Xian Zhang, Kosei Yamauchi, and Ken Sakai*
    ACS Catal., 2021, 11, 10436–10449.


23. "Redox tuning in Pt(bpy)-viologen catalyst-acceptor dyads enabling photocatalytic hydrogen evolution from water"
    Koichi Yatsuzuka*, Kosei Yamauchi*, and Ken Sakai*
    Chem. Commun., 2021, 57, 5183-5186.


22. "Improving the Overall Performance of Photochemical H₂ Evolution Catalyzed by the Co-NHC Complex via the Redox Tuning of Electron Relays"
    Koichi Yatsuzuka, Kosei Yamauchi*, Ken Kawano, Hironobu Ozawa*, and Ken Sakai*
    Sustainable Energy Fuels, 2021, 5, 740-749.


21. "Unexpected structure of enaminone Pd(II) complex in comparison with Cu(II)complex: Synthesis, characterization, DNA binding and antitumor activity"
    Hoda A. El-Ghamry*, Kosei Yamauchi, Ken Sakai*, and Thoraya A. Farghaly
    Inorg. Chim. Acta, 2021, 516, 120117.


20. "A dinuclear nickel catalyst based on metal–metal cooperation for electrochemical hydrogen production"
    Tomohiko Hamaguchi*, Keisuke Kai, Isao Ando, Ken Kawano, Kosei Yamauchi, and Ken Sakai
    Inorg. Chim. Acta, 2020, 505, 119498.


19. "Photochemical CO₂ Reduction Driven by Water-Soluble Copper(I) Photosensitizer with the Catalysis Accelerated by Multi-Electron Chargeable Cobalt Porphyrin"
    Xian Zhang, Mihaela Cibian*, Arnau Call*, Kosei Yamauchi, and Ken Sakai*
    ACS Catal., 2019, 9, 11263-11273.
    


18. "An Earth-abundant System for Light-driven CO₂ Reduction to CO Using a Pyridinophane Iron Catalyst"
    Yuto Sakaguchi, Arnau Call*, Mihaela Cibian, Kosei Yamauchi and Ken Sakai*
    Chem. Commun., 2019, 55, 8552-8555.
    


17. "A Molecular Cobalt Hydrogen Evolution Catalyst Showing High Activity and Outstanding Tolerance to CO and O₂"
    Jia-Wei Wang, Kosei Yamauchi, Hai-Hua Huang, Jia-Kai Sun, Zhi-Mei Luo, Di-Chang Zhong*, Tong-Bu Lu*, and Ken Sakai*
    Angew. Chem. Int. Ed., 2019, 58, 10923-10927.
    


16. "Highly Efficient and Selective Photocatalytic CO₂ Reduction to CO in Water by a Cobalt Porphyrin Molecular Catalyst"
    Arnau Call, Mihaela Cibian, Keiya Yamamoto, Takashi Nakazono, Kosei Yamauchi, and Ken Sakai
    ACS Catal., 2019, 9, 4867-4874.
    


15. "Ligand-based PCET Reduction in a Heteroleptic Ni(bpy)(dithiolene) Electrocatalyst Giving Rise to Higher Metal Basicity Required for Hydrogen Evolution"
    Keita Koshiba, Kosei Yamauchi*, and Ken Sakai*
    ChemElectroChem, 2019, 6, 2273-2281.
    


14. "Consecutive Ligand-based PCET Processes Affording a Doubly Reduced Nickel Pyrazinedithiolate which Transforms into a Metal Hydride Required to Evolve H₂"
    Keita Koshiba, Kosei Yamauchi*, and Ken Sakai*
    Dalton Trans., 2019, 48, 635-640.
    


13. "A family of molecular nickel hydrogen evolution catalysts providing tunable overpotentials using ligand-centered proton-coupled electron transfer paths"
    Yutaro Aimoto, Keita Koshiba, Kosei Yamauchi*, and Ken Sakai*
    Chem. Commun., 2018, 54, 12820-12823.
    (Themed collection: Frontiers in Proton Coupled Electron Transfer (PCET))
    


12. "Synthesis and Complete Structure Determination of a Sperm-Activating and -Attracting Factor Isolated from the Ascidian Ascidia sydneiensis"
    Tomohiro Watanabe, Hajime Shibata, Makoto Ebine, Hiroshi Tsuchikawa, Nobuaki Matsumori, Michio Murata, Manabu Yoshida, Masaaki Morisawa, Shu Lin, Kosei Yamauchi, Ken Sakai, and Tohru Oishi*
    J. Nat. Prod., 2018, 81, 985-997.
    


11. "Near-Infrared-Light-Driven Hydrogen Evolution from Water using a Polypyridyl Triruthenium Photosensitizer"
    Yutaro Tsuji, Keiya Yamamoto, Kosei Yamauchi, and Ken Sakai*
    Angew. Chem. Int. Ed., 2018, 57, 208-212.
    (Selected as an Inside Cover Picture)
    


10. "Photochemical H₂ Evolution Catalyzed by Porphyrin-based Cubic Cages Singly and Doubly Encapsulating PtCl₂(4,4’-dimethyl-2,2’-bipyridine)"
    Shota Tanaka, Takashi Nakazono, Kosei Yamauchi*, and Ken Sakai*
    Chem. Lett., 2017, 46, 1573-1575.
    (Selected as a Cover Page and an Editor's Choice.) Open Access!
    


9. "A Nickel Dithiolate Water Reduction Catalyst Providing Ligand-based Proton-coupled Electron Transfer Pathways"
   Keita Koshiba, Kosei Yamauchi*, and Ken Sakai*
   Angew. Chem. Int. Ed., 2017, 56, 4247-4251.
   


8. "Pt(II)-Catalyzed Photosynthesis for H₂ Evolution Cycling Between Singly and Triply Reduced Species"
   Keiya Yamamoto, Kyoji Kitamoto, Kosei Yamauchi and Ken Sakai*
   Chem. Commun., 2015, 51, 14516-14519.
   


7. "A tricarboxylated PtCl(terpyridine) derivative exhibiting pH-dependent photocatalytic activity for H₂ evolution from water"
   Kosei Yamauchi*, and Ken Sakai*
   Dalton Trans., 2015, 44, 8685-8696.
   


6. "A Cobalt-NHC Complex as an Improved Catalyst for Photochemical Hydrogen Evolution from Water"
   Ken Kawano, Kosei Yamauchi*, and Ken Sakai*
   Chem. Commun., 2014, 50, 9872-9875.
   


5. "Homogeneous Catalysis of Nickel(II) Complexes Promoting Hydrogen Production with High Turnover Numbers "
   Kosei Yamauchi*
   Bull. Jpn. Soc. Coord. Chem., 2013, 62, 26-28.
   


4. "Kinetics and DFT Studies on Water Oxidation by Ce⁴⁺ Catalyzed by [Ru(terpy)(bpy)(OH₂)]²⁺"
   Ayano Kimoto, Kosei Yamauchi, Masaki Yoshida, Shigeyuki Masaoka*, and Ken Sakai*
   Chem. Commun., 2012, 48, 239-241.
   


3. "Stability of Pt(II)-Based H₂-Evolving Catalysts against H₂ in Aqueous Solution"
   Kosei Yamauchi, Shigeyuki Masaoka, and Ken Sakai*
   Dalton Trans., 2011, 40, 12447-12449.
   


2. "Photochemical and Thermal Hydrogen Production from Water Catalyzed by Carboxylate-Bridged Dirhodium(II) Complexes"
   Saya Tanaka, Shigeyuki Masaoka, Kosei Yamauchi, Masahiko Annaka, and Ken Sakai*
   Dalton Trans., 2010, 39, 11218-11226.
   


1. "Evidence for Pt(II)-Based Molecular Catalysis in the Thermal Reduction of Water into Molecular Hydrogen"
   Kosei Yamauchi, Shigeyuki Masaoka, and Ken Sakai*
   J. Am. Chem. Soc., 2009, 131, 8404-8406.
   

Contact

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Coordination Chamistry Laboratory, Department of Chemistry, Faculty of Science, Kyushu University
E-mail: kyamauchi( a )chem.kyushu-univ.jp

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