燃料電池に適用可能な金属多核触媒の開発
キーワード：燃料電池　酸素還元　アルコール酸化
2006.07.

特異的な電子状態を持つ二核錯体を基盤とした白金一次元錯体の構築
キーワード：白金一次元錯体、固体物性、電気伝導
1991.04.

白金制癌剤として新規白金錯体の合成、構造、及び抗腫瘍特性評価
キーワード：制癌剤、白金
1998.07.

単一分子光水素発生デバイスの合成、光触媒機能評価、及び応用
キーワード：光分子デバイス、単一分子デバイス、光触媒、水素エネルギー
1991.04.

水の分解触媒として均一系錯体触媒の開発
キーワード：錯体触媒、水の均等分解、水素エネルギー
1991.04.

金属多核錯体の合成と触媒への応用
キーワード：金属多核錯体
1991.04.

単一分子光水素発生デバイスの合成と機能制御
2009.04～2012.03, 代表者：酒井健, 九州大学, 文部科学省科研費基盤研究（B）.

ビオローゲンナノワイヤーを有する可視光変換デバイスの構築と光機能界面への応用
2010.04～2012.03, 代表者：酒井健, 九州大学, 文部科学省新学術領域研究.

高次環境調和型反応の開発ー反応空間と触媒機能の同調的相乗化
2006.07, 代表者：香月　勗, 九州大学理学研究院.

単一分子光水素発生デバイスの機構解明と高度反応制御
2005.04, 代表者：酒井健, 九州大学, 文部省科研費基盤研究（A）（日本）.

主要著書

主要原著論文

1.	酒井 健, Hitoshi Sakai (1930-2008), Applied Geochemistry, 10.1016/j.apgeochem.2012.02.004, 2012.02.
2.	Masaki Yoshida, Shigeyuki Masaoka and Ken Sakai, Oxygen Evolution from Water Catalyzed by Mononuclear Ruthenium Complexes with a Triazamacrocyclic Ligand in a Facial Fashion, Chem. Lett., 2009, 38, 702-703, 2009.07.
3.	Reiko Okazaki, Shigeyuki Masaoka and Ken Sakai, Photo-Hydrogen-Evolving Activity of Chloro(terpyridine)platinum(II): a Single-Component Molecular Photocatalyst, Dalton Trans., 2009, 6127-6133, 2009.06.
4.	Kosei Yamauchi, Shigeyuki Masaoka and Ken Sakai, Evidence for the Pt(II)-Based Molecular Catalysis in Thermal Reduction of Water into Molecular Hydrogen, J. Am. Chem. Soc., 2009, 131, 8404-8406, 2009.06.
5.	T. Yamaguchi, S. Masaoka and K. Sakai, Hydrogen Production from Water Catalyzed by an Air-stable Di-iron Complex with a Bio-relevant Fe2(μ-S)2 Core, Chem. Lett., 2009, 38, 434-435, 2009.05.
6.	S. Masaoka and K. Sakai, Clear Evidence Showing the Robustness of a Highly Active Oxygen-Evolving Mononuclear Ruthenium Complex with an Aqua Ligand, Chem. Lett., 38, 182-3, 2009.02.
7.	M. J. Katz, K. Sakai and D. B. Leznoff, The use of aurophilic and other metal-metal interactions as crystal engineering design elements to increase structural dimensionality, Chem. Soc. Rev., 2008, 37(9), 1884-95., 2008.07.
8.	Ken Sakai and Hironobu Ozawa, Homogeneous catalysis of platinum(II) complexes in photochemical hydrogen production from water, Coordination Chemistry Reviews, 251, 2753-2766, 2007.11.
9.	Hironobu Ozawa and Ken Sakai, An Effect of Structural Modification in the Photo-hydrogen-evoluting RuIIPtII Dimers, Chemistry Letters, 36, 920-921, 2007.07.
10.	Hironobu Ozawa, Yuki Yokoyama, Masa-aki Haga, and Ken Sakai, Syntheses, Characterization, and Photo-Hydrogen-Evolving Properties of Tris(2,2´-bipyridine)ruthenium(II) Derivatives Tethered to a cis-Pt(II)Cl2 Unit: Insights into the Structure-Activity Relationship, Dalton Trans., 12, 1197-1206, 2007.05.
11.	Hironobu Ozawa, Masa-aki Haga, Ken Sakai, A Photo-Hydrogen-Evolving Molecular Device Driving Visible-Light-Induced EDTA-Reduction of Water into Molecular Hydrogen, J.Am.Chem.Soc., 4926-4927, 2006.04.
12.	Ken Sakai, Hironobu Ozawa, Hajime Yamada, Taro Tsubomura, Mariko Hara, Akon Higuchi, Masa-aki Haga, A Tris(2,2'-bipyridine)ruthenium(II)Derivative Tetherred to a cis-PtCl2(amine)2moiety:Syntheses, Spectroscopic properties, and Visible-Light-Induced Scission of DNA, Dalton Trans., 3300-3305, 2006.04.

主要総説, 論評, 解説, 書評, 報告書等

主要学会発表等

1.	Ken Sakai, Mechanistic Insights into the Molecular Catalysis of Water Splitting and CO2 Reduction, The 2023 edition of the European Winter School on Physical Organic Chemistry (E-WISPOC), 2023.02.
2.	Ken Sakai, Sustainable Energy Cycles based on Water Splitting and CO2 Reduction , 錯体化学会第７２回討論会, 2022.09, [URL].
3.	Ken Sakai, Cobalt Porphyrin Catalysts for Water Oxidation and Fuel Generation, The 44th International Conference on Coordination Chemistry（ICCC2022）, 2022.08, [URL].
4.	Ken Sakai, Photocatalytic Water Splitting and CO2 Reduction, The 8th Asian Conference on Coordination Chemistry (ACCC8), 2022.08, [URL].
5.	Ken Sakai, Mechanistic Studies on Water Splitting and CO2 Reduction Towards Solar Fuels Production, The 24th International Symposium on the Photochemistry and Photophysics of Coordination Compounds（ISPPCC）, 2022.07, [URL].
6.	Ken Sakai, Earth-abundant and environmentally friendly molecular photocatalysts for CO2 reduction in aqueous media, Global Renewable Energy Researchers Meet, 2021.05, [URL].
7.	Ken Sakai, Molecular Catalysts and Photocatalysts for Water Splitting and CO2 Reduction, Symposium on Materials Chemistry for Sustainable Energy in Chuo University, 2020.03.
8.	Ken Sakai, Molecular Catalysis of Water-Splitting and CO2 Reduction, International Symposium bitween ETH Zurich and Kyushu University, 2020.01.
9.	Ken Sakai, Molecular Catalysis and Photocatalysis for Water Splitting and CO2 Reduction, International Conference on Artificial Photosynthesis-2019 (ICARP2019), 2019.11, [URL].
10.	Ken Sakai, Molecular Catalysis and Photocatalysis for Water Splitting and CO2 Reduction, 12th China-Japan Joint Symposium on Metal Cluster Compounds (CJJSMCC2019), 2019.10.
11.	Ken Sakai, Molecular Catalysis for Water Splitting and CO2 Reduction, The 7th Asian Conference on Coordination Chemistry , 2019.10, [URL].
12.	Ken Sakai, Molecular Photocatalysis Towards Solar Water Splitting and CO2 Reduction, 2019 ESP-IUPB WORLD CONGRESS, 2019.08, [URL], Over the past decade, our group has focused on the studies of transition-metal-based molecular systems relevant to the development of artificial photosynthetic molecular devices. The targets of our research involve the studies on (i) water oxidation catalysis in order to uptake protons and electrons required for fuels generation, (ii) catalytic water or CO2 reduction into sustainable fuels (i.e., H2, CO, etc.), (iii) artificial light-harvesting systems towards the effective charge separation and/or migration, and (iv) molecular- and instrumental-level chemical engineering by making hybrid molecular and/or heterogeneous systems using multiple key components. Deeper insights into the mechanism of reaction of interest are always greatly appreciated for the sake of inspiring the rational design strategies towards the more desirable/efficient systems in promoting all relevant processes. In this context, substantial efforts have been devoted to more carefully study the reaction kinetics and equilibria in solution that are relevant to each topic. Various spectrophotometric, electrochemical, and photochemical techniques have been adopted to better understand the mechanistic aspects relevant to all of our systems. Some of the reaction steps of interest are not observable by any experimental techniques, and must be discussed on the basis of our DFT results, which have also greatly helped us understand the mechanism of reactions. Importantly, one of our findings is that, in any catalysis, the reactivity of metal(s) can be rationally tuned by use of redox active ligands that are more or less hybridized with metal(s) in their orbitals. Such issues are often involved in our discussion. One of our interests has concentrated on the molecular Pt-catalyzed hydrogen evolution reactions and their application to fabricate photosensitizer-catalyst hybrid molecular devices [1-3]. Our recent kinetic and electrochemical studies evidence the formation of a hydridodiplatinum(II,III) intermediate when H2 evolution is catalyzed by a simple mononuclear Pt(bpy)Cl2 derivative, which is also rationalized by our DFT results. Our studies have also provided new aspects on photo-induced multi-charge separation [4], near-infrared-driven water reduction [5], water oxidation catalysis using various transition metal complexes [6,7], non-precious metal based H2 evolution catalysis [8], and photoelectrochemical cells for the overall water splitting [9]. References 1. Ozawa, H.; Haga, M.; Sakai, K. J. Am. Chem. Soc. 2006, 128, 4926-4927. 2. Sakai, K.; Ozawa, H. Coord. Chem. Rev. 2007, 251, 2753-2766. 3. Kitamoto, K.; Sakai, K. Angew. Chem. Int. Ed. 2014, 53, 4618-4622. 4. Kitamoto, K.; Sakai, K. Chem. Eur. J. 2016, 35, 12381-12390. 5. Tsuji, Y.; Yamamoto, K.; Yamauchi, K.; Sakai, K. Angew. Chem. Int. Ed. 2018, 57, 208-212. 6. Nakazono, T.; Sakai, K. Dalton Trans. 2016, 45, 12649-12652. 7. Parent, A.R.; Nakazono, T.; Tsubonouchi, Y.; Taira, N.; Sakai, K. Adv. Inorg. Chem. 2019, in press. 8. Koshiba, K.; Yamauchi, K.; Sakai, K. ChemElectroChem 2019, published online. 9. Morita, K.; Sakai, K.; Ozawa, H. ACS Appl. Energy Mater. 2019, 2, 987-992..
13.	Ken Sakai, Molecular Catalysis Towards Artificial Solar Generation of Fuels, 19th International Conference on Biological Inorganic Chemistry (ICBIC-19), 2019.08, [URL], Over the past decade, our group has focused on the studies of transition-metal-based molecular systems relevant to the development of artificial photosynthetic molecular devices. The targets of our research involve the studies on (i) water oxidation catalysis in order to uptake protons and electrons required for fuels generation, (ii) catalytic water or CO2 reduction into sustainable fuels (i.e., H2, CO, etc.), (iii) artificial light-harvesting systems towards the effective charge separation and/or migration, and (iv) molecular- and instrumental-level chemical engineering by making hybrid molecular and/or heterogeneous systems using multiple key components. Deeper insights into the mechanism of reaction of interest are always greatly appreciated for the sake of inspiring the rational design strategies towards the more desirable/efficient systems in promoting all relevant processes. In this context, substantial efforts have been devoted to more carefully study the reaction kinetics and equilibria in solution that are relevant to each topic. Various spectrophotometric, electrochemical, and photochemical techniques have been adopted to better understand the mechanistic aspects relevant to all of our systems. Some of the reaction steps of interest are not observable by any experimental techniques, and must be discussed on the basis of our DFT results, which have also greatly helped us understand the mechanism of reactions. Importantly, one of our findings is that, in any catalysis, the reactivity of metal(s) can be rationally tuned by use of redox active ligands that are more or less hybridized with metal(s) in their orbitals. Such issues are often involved in our discussion. One of our interests has concentrated on the molecular Pt-catalyzed hydrogen evolution reactions and their application to fabricate photosensitizer-catalyst hybrid molecular devices [1-3]. Our recent kinetic and electrochemical studies evidence the formation of a hydridodiplatinum(II,III) intermediate when H2 evolution is catalyzed by a simple mononuclear Pt(bpy)Cl2 derivative, which is also rationalized by our DFT results. Our studies have also provided new aspects on photo-induced multi-charge separation [4], near-infrared-driven water reduction [5], water oxidation catalysis using various transition metal complexes [6,7], non-precious metal based H2 evolution catalysis [8], and photoelectrochemical cells for the overall water splitting [9]. References [1] Ozawa, H.; Haga, M.; Sakai, K. J. Am. Chem. Soc. 128 (2006), 4926-4927. [2] Sakai, K.; Ozawa, H. Coord. Chem. Rev. 251 (2007), 2753-2766. [3] Kitamoto, K.; Sakai, K. Angew. Chem. Int. Ed. 53 (2014), 4618-4622. [4] Kitamoto, K.; Sakai, K. Chem. Eur. J. 35 (2016), 12381-12390. [5] Tsuji, Y.; Yamamoto, K.; Yamauchi, K.; Sakai, K. Angew. Chem. Int. Ed. 57 (2018), 208-212. [6] Nakazono, T.; Sakai, K. Dalton Trans. 45 (2016), 12649-12652. [7] Parent, A.R.; Nakazono, T.; Tsubonouchi, Y.; Taira, N.; Sakai, K. Adv. Inorg. Chem. 2019, in press. [8] Koshiba, K.; Yamauchi, K.; Sakai, K. ChemElectroChem 2019, published online. [9] Morita, K.; Sakai, K.; Ozawa, H. ACS Appl. Energy Mater.2 (2019), 987-992. .
14.	Ken Sakai, Molecular Catalysis Relevant to Solar Energy Conversion and Storage, The 23rd International Symposium on the Photochemistry and Photophysics of Coordination Compounds (ISPPCC 2019), 2019.07, [URL], Over the past decade, our group has focused on the studies of transition-metal-based molecular systems relevant to the development of artificial photosynthetic molecular devices. The targets of our research involve the studies on (i) water oxidation catalysis in order to uptake protons and electrons required for fuels generation, (ii) catalytic water or CO2 reduction into sustainable fuels (i.e., H2, CO, etc.), (iii) artificial light-harvesting systems towards the effective charge separation and/or migration, and (iv) molecular- and instrumental-level chemical engineering by making hybrid molecular and/or heterogeneous systems using multiple key components. Deeper insights into the mechanism of reaction of interest are always greatly appreciated for the sake of inspiring the rational design strategies towards the more desirable/efficient systems in promoting all relevant processes. In this context, substantial efforts have been devoted to more carefully study the reaction kinetics and equilibria in solution that are relevant to each topic. Various spectrophotometric, electrochemical, and photochemical techniques have been adopted to better understand the mechanistic aspects relevant to all of our systems. Some of the reaction steps of interest are not observable by any experimental techniques, and must be discussed on the basis of our DFT results, which have also greatly helped us understand the mechanism of reactions. Importantly, one of our findings is that, in any catalysis, the reactivity of metal(s) can be rationally tuned by use of redox active ligands that are more or less hybridized with metal(s) in their orbitals. Such issues are often involved in our discussion. One of our interests has concentrated on the molecular Pt-catalyzed hydrogen evolution reactions and their application to fabricate photosensitizer-catalyst hybrid molecular devices [1-3]. Our recent kinetic and electrochemical studies evidence the formation of a hydridodiplatinum(II,III) intermediate when H2 evolution is catalyzed by a simple mononuclear Pt(bpy)Cl2 derivative, which is also rationalized by our DFT results. Our studies have also provided new aspects on photo-induced multi-charge separation [4], near-infrared-driven water reduction [5], water oxidation catalysis using various transition metal complexes [6,7], non-precious metal based H2 evolution catalysis [8], and photoelectrochemical cells for the overall water splitting [9]. References 1. Ozawa, H.; Haga, M.; Sakai, K. J. Am. Chem. Soc. 2006, 128, 4926-4927. 2. Sakai, K.; Ozawa, H. Coord. Chem. Rev. 2007, 251, 2753-2766. 3. Kitamoto, K.; Sakai, K. Angew. Chem. Int. Ed. 2014, 53, 4618-4622. 4. Kitamoto, K.; Sakai, K. Chem. Eur. J. 2016, 35, 12381-12390. 5. Tsuji, Y.; Yamamoto, K.; Yamauchi, K.; Sakai, K. Angew. Chem. Int. Ed. 2018, 57, 208-212. 6. Nakazono, T.; Sakai, K. Dalton Trans. 2016, 45, 12649-12652. 7. Parent, A.R.; Nakazono, T.; Tsubonouchi, Y.; Taira, N.; Sakai, K. Adv. Inorg. Chem. 2019, in press. 8. Koshiba, K.; Yamauchi, K.; Sakai, K. ChemElectroChem 2019, published online. 9. Morita, K.; Sakai, K.; Ozawa, H. ACS Appl. Energy Mater. 2019, 2, 987-992..
15.	Ken Sakai, Molecular Catalysts and Photocatalysts for Solar Energy Conversion and Storage, 2nd Kyushu-Mainz Joint Chemistry Symposium, 2019.01.
16.	Ken Sakai, Molecular Catalysts and Photocatalysts towards Artificial Photosynthesis, 東京大学理学部化学教室雑誌会セミナー（Department Seminer), 2018.12, In order to achieve practically useful artificial photosynthetic devices, we still need to gain deeper knowledge and skills in handling the basic chemical reactions catalyzed or photocatalyzed by transition metal based molecular systems. Our studies involve new materials synthesis, structure analysis, reaction kinetics, electrocatalysis, photocatalysis, DFT calculations, and so on. The presentation will focus on our recent advancements in clarifying the mechanism of some important energy-related molecular catalysis, such as hydrogen evolution, oxygen evolution, and even carbon dioxide reduction. The development of hybrid molecular devices consisting of multiple molecular components will also be discussed..
17.	Ken Sakai, 金属単体や錯体による触媒反応, 錯体化学若手の会夏の学校2018, 2018.09.
18.	Ken Sakai, Coordination Chemistry focused on Photochemical Water Splitting Molecular Devices, 43rd International Conference on Coordination Chemistry(ICCC2018), 2018.07.
19.	Ken Sakai, Water Oxidation and CO2 Reduction Catalyzed by Co-, Cu- and Ru-Centered Catalysts including Cobalt Porphyrins, Tenth International Conferernce on Porphyrins and Phthalocyanines(ICPP-10), 2018.07, [URL], Please refer to the attached sheet..
20.	Ken Sakai, Catalytic Hydrogen Evolution Reactions Coupled with Proton-Coupled Electron Transfer Processes, 3rd Interntational Conference on Proton Coulpled Electron Transfer (PCET2018), 2018.06, [URL], Please refer to the attached sheet..
21.	Ken Sakai, Hybrid Molecular Catalysts and Photocatalysts for Solar Water Splitting Reactions , 3rd Japan - UK Joint Symposium on Coordination Chemistry, 2018.04, [URL], The chemistry of water oxidation and reduction has been extensively studied from many viewpoints due to their significant relevance to solve the problems arising from the global warming and the shortage of fossil fuels. For both processes, proton-coupled electron transfer (PCET) processes have been considered to play the central role in drastically lowering the activation barriers for the relevant elementally steps. In the past decades, our group has paid specific interest in clarifying the mechanisms of transition-metal-based molecular catalysis for both processes [1-6]. In this presentation, some PCET processes that govern the rate of catalytic water reduction to evolve dihydrogen from water are discussed. The figure shown below illustrates that transition-metal-catalyzed water reduction can be roughly considered to undergo through three different types of PCET-based ratedetermining steps. The first metal-centered model is the case where the anti-bonding orbital in the square planar complex like a Pt(II) system forms a hydridoplatinum(III) intermediate [1,2,5]. This path will was also shown to undergo via formation of a diplatinum(II,III) interemediate due to its favorable stabilization via the Pt-Pt bond formation. An exceptional case is a Co NHC catalyst, for which metal-centered PCET occurs upon reduction of Co(II) d 7 leading to protonation at a Co(I) d8 system [4], implying that the dz2 filled orbital provides basicity strong enough to promote protonation at the metal center. Our recent studies also demonstrated some unique hydride forming paths in which ligand-based reductions coupled with protonation at the ligand geometries can lead to metal hydride intermediate species required to catalyze hydrogen evolution from water [5,6]. References 1. Sakai, K.; Ozawa, H., Coord. Chem. Rev., 2007, 251, 2753. 2. Ogawa, M. Ajayakumar, G.; Masaoka, S.; Kraatz, H.-B.; Sakai, K., Chem. Eur. J., 2011, 17, 1148. 3. Kimoto, A.; Yamauchi, K.; Yoshida, M.; Masaoka, S.; Sakai, K., Chem. Commun., 2012, 48, 239. 4. Kawano, K.; Yamauchi, K.; Sakai, K., Chem. Commun., 2014, 50, 9872. 5. Yamauchi, K.; Sakai, K., Dalton Trans., 2015, 44, 8685. 6. Koshiba, K.; Yamauchi, K.; Sakai, K., Angew. Chem. Int. Ed., 2017, 56, 424.
22.	Ken Sakai, Molecular Catalysts and Photocatalysts for Water Splitting Reactions and their Applications in Surface Modified TiO2 Electrodes, I2CNER-UGö IRTG Proposal Workshop , 2018.04.
23.	Ken Sakai, Molecular Design and Control of Transition Metal Complexes and Their Hybrids for Photocatalytic Water Oxidation and Reduction, The 2018 Gordon Research Conference, 2018.01.
24.	酒井　健, 金属錯体を触媒とした水からの酸素及び水素発生反応の開拓, 東京工業大学　すずかけ台キャンパス　吉沢研究室, 2018.01.
25.	Ken Sakai, Molecular Catalysts and Photocatalysts towards Solar Energy Conversion and Storage, 11th Japan-China Joint Symposium on Metal Cluster Compounds, 2017.10.
26.	Ken Sakai, Molecular Catalysts and Photocatalysts for Water Oxidation and Reduction, The 2nd Japan-US Bilateral Meeting on Coordination Chemistry, 2017.09.
27.	Ken Sakai, Molecular Catalysts and Photocatalysts for Water Oxidation and Reduction, APCC2017, 2017.07.
28.	Ken Sakai, Molecular Photocatalysts for Solar Water Splitting, ISPPCC2017, 2017.07.
29.	Ken Sakai, Single-Molecular Hybrid Photocatalysts towards Solar Water Splitting Devices, 2017NAGC/ CTMNM Workshp, 2017.05.
30.	酒井 健, Hydrogen Production from Water Photocatalyzed by Platinum-based Hybrid Molecular Systems, 9th Singapore International Chemistry Conference(SICC9), 2016.12.
31.	酒井 健, Hybrid Molecular Photocatalysts for Hydrogen Generation from Water, 9th Asian and Oceanian Photochemistry Conference(APC2016), 2016.12.
32.	酒井 健, Molecular Catalysts and Photocatalysts for Solar Water Splitting Reactions, Dublin City University, Trinity College Dublin, University of Cork, University of Limerick, NUI Galway, 2016.11.
33.	酒井 健, Molecular catalysts and photocatalysts towards solar water splitting reactions, Inorganic Chemistry Symposium, 2016.10.
34.	酒井 健, Hybrid Molecular Photocatalysts for Hydrogen Generation from Water, 5th International Symposium on Solar Fuels and Solar Cells (5th SFSC), 2016.10.
35.	酒井 健, Hybrid Molecular Systems for Photocatalytic Water Oxidation and Reduction, 42nd edition of the International Conference on Coordination Chemistry (ICCC2016), 2016.07.
36.	酒井 健, Molecular Catalysts and Photocatalysts for Water Splitting Reactions, Japan-Ireland joint seminar "Design and Characterization of Advanced Materials", 2016.06.
37.	酒井 健, Hybrid Molecular Photocatalysts for Hydrogen Generation from Water, UK-Japan Solar Driven Fuel Synthesis Workshop, 2016.06.
38.	酒井 健, Hybrid Molecular Catalysts towards Solar Driven Water Splitting Reactions, 2nd International Symposium on Chemical Energy Conversion Processes (ISCECP-2), 2016.05.
39.	酒井 健, Photocatalytic Water Splitting with Hybrid Molecular Systems, 26th IUPAC International Symposium on Photochemistry, 2016.04.
40.	酒井 健, Hybrid and Non-hybrid Molecular Catalysts for Solar-driven Water Splitting Reactions, City University of Hong Kong, 2016.03.
41.	酒井 健, Molecular Catalysts for Photochemical and Electrochemical Water Oxidation and Reduction, Sun Yat-Sen University, 2016.03.
42.	酒井 健, Molecular Photocatalysts and Electrocatalysts Towards Solar-driven Water Splitting, Institute of Chemical Research of Catalonia (ICIQ), 2016.03.
43.	酒井 健, Improving Robustness and TOF of Cobalt Porphyrin Water Oxidation Catalysts, 2nd Molecules and Materials for Artificial Photosynthesis Conference, 2016.02.
44.	酒井 健, PCETを経由する分子性ニッケル錯体触媒の水素生成機構, 新学術領域 「人工光合成」第4回公開シンポジウム, 2016.01.
45.	酒井 健, Photo-driven charge storage coupled with catalytic water reduction to hydrogen, Pacifichem2015, 2015.12.
46.	酒井 健, Molecular Catalysts for Ni,Co,Rh,Pt-based H2 Evolution and Ru,Co-based O2 Evolution, Pacifichem2015, 2015.12.
47.	酒井 健, Molecular Catalysts for Solar-driven Water Splitting Reactions, 25th Annual Meeting of MRS-J (2015), 2015.12.
48.	酒井 健, Hybrid Molecular Photocatalysts Driving H2 Evolution from Water, 10th China-Japan Joint Symposium on Metal Cluster Compounds(CJSMCC-2015), 2015.10.
49.	酒井 健, Molecular Catalysis for Water Oxidation and Reduction, 2nd Japan-Germany Joint Symposium on Coordination Chemistry (JGJSCC2), 2015.09.
50.	酒井 健, Co-based molecular water oxidation catalysts, 250th ACS National Meeting & Exposition, 2015.08.
51.	酒井 健, Hybrid Molecular Catalysts for Solar-driven Water Splitting, 5th Asian Conference on Coordination Chemistry (ACCC5), 2015.07.
52.	酒井 健, Platinum-based Molecular Photocatalysts Driving Hydrogen Evolution from Water, University of Calgary, 2015.06.
53.	酒井 健, Molecular Catalysts for Photochemical Water Oxidation and Reduction, University of Montreal, 2015.06.
54.	酒井 健, Multifunctional Molecular Devices Enabling Photocatalytic Hydrogen Evolution from Water, 98th Canadian Chemistry Conference and Exhibition（CSC2015） , 2015.06.
55.	酒井 健, Molecular Catalysts and Devices for Artificial Photosynthesis, MANA国際シンポジウム2015, 2015.03.
56.	酒井 健, 光水素発生分子デバイスの開発と機能評価, 新学術領域 「人工光合成」　第3回公開シンポジウム, 2015.01.
57.	酒井 健, Molecular Devices for Photodriven Water-Splitting Reactions, 13th Eurasia Conference on Chemical Science, 2014.12.
58.	酒井 健, Hydrogen Generation Photocatalyzed by Platinum(II)-Based Molecular Systems, 第24回日本MRS年次大会, 2014.12.
59.	酒井 健, Multifunctional molecular devices for photoinduced hydrogen evolution from water, ICARP2014, 2014.11.
60.	酒井 健, 水溶性金属単核錯体を触媒とする酸素発生反応の速度論的研究, 錯体化学会第64回討論会, 2014.09.
61.	酒井 健, Light-Driven Water Splitting to Dioxygen and Dihydrogen Photocatalyzed by Transition Metal Complexes, International Symposium on Green/Life Innovation, 2014.09.
62.	酒井 健, 金属錯体を基盤とした光水素生成システムの創成, AnApple全体会議, 2014.08.
63.	酒井 健, Molecular Photocatalysis For Water Splitting Reactions, International Conference on Coordination Chemistry (ICCC-41), 2014.07.
64.	酒井 健, 金属錯体を光触媒とする人工光合成系の開発, ゼオライト学会, 2014.06.
65.	酒井 健, Transition metal complexes for water splitting reactions, the 97th Canadian Chemistry Conference and Exhibition, 2014.06.
66.	酒井 健, Molecular Catalysts and Devices Driving Photoinduced Water Splitting Reactions, the 97th Canadian Chemistry Conference and Exhibition, 2014.06.
67.	酒井 健, Artificial Photosynthesis based on Molecular Photocatalysis of Water Splitting to Dihydrogen and Dioxygen, Nanomaterials for Alternative Energy Applications, 2014.05.
68.	Takashi NAKAZONO, Ken SAKAI, Photoinduced Oxygen Evolution Catalyzed by Water-Soluble Cobalt Porphyrin Complexes, 7th International Conference on Porphyrins and Phthalocyanines on Jeju in Korea (ICPP-7), 2012.07.
69.	田中　早弥・酒井　健, ポリオキソメタレートを基盤とした水からの光化学的水素、及び酸素発生, 日本化学会第92春季年会, 2012.03.
70.	Ken Sakai, The RuPt-based Photo-hydrogen-evolving Molecular Devices towards the Development of Artificial Photosynthesis Generating Hydrogen Energy from Water and Sun Light, The 3rd Japan-Korea Joint Symposium on Transition Metal Complexes, 2011.02.
71.	酒井　健, Mechanistic Insights into Photoinduced and Thermal Hydrogen Evolution Reactions Catalyzed by Platinum(II)-based Molecular Systems, 分子研研究会, 2011.01.
72.	Ken Sakai, Toward the Development of Artificial Photosynthesis Generating Hydrogen Energy from Water and Sunlight, the 2010 International Chemical Congress of Pacific Basin Societies (Pacifichem 2010), 2010.12.
73.	Ken Sakai, Hydrogen Production from Water using the Pt(II)-Based Molecular Catalysts, the 2010 International Chemical Congress of Pacific Basin Societies (Pacifichem 2010), 2010.12.
74.	Ken Sakai, Photochemical Hydrogen Evolution from Water Catalyzed by Platinum(II)-Based Molecular Catalysts, 2010.11.
75.	Ken Sakai, Charge Storage in Multi-Viologen Tethers and Its Application to Platinum(II)-Catalyzed Hydrogen Evolution from Water, the 11th International Chemistry Conference and Exhibition (11th ICCA), 2010.11.
76.	酒井　健, 電子貯蔵能と立体効果に基づく水素生成触媒活性の制御, 配位プログラミング　A03班　班会議, 2010.11.
77.	Ken Sakai, Photoinduced Charge Storage in Multipendant Viologen Tethers Leading to Hydrogen Evolution from Water Catalyzed by Platinum(II) Complexes, 11th Eurasia Conference on Chemical Sciences, 2010.10.
78.	Ken Sakai, Photochemical Hydrogen Evolution from Water Catalyzed by Platinum(II)-Based Molecular Catalysts, 2nd International Symposium on Solar Fuels and Solar Cells, 2010.08.
79.	Ken Sakai, Photochemical Hydrogen Evolution from Water Catalyzed by Platinum(II)-Based Molecular Catalysts, 2nd International Symposium on Solar Fuels and Solar Cells, 2010.08.
80.	Ken Sakai, Recent Progress in the Studies on Photo-Hydrogen-Evolving Molecular Devices Involving Pt (Ii)-Based Molecular Catalysts, 8th China-Japan Joint Symposium on Metal Cluster Compounds, 2010.08.
81.	Ken Sakai, Photoinduced Hydrogen Evolution from Water Driven by Pt(II)-Based Molecular Photocatalysts, Inaugural (1st) International Conference on Molecular and Functional Catalysis, 2010.07.
82.	Ken Sakai, Supramolecular Systems Capable of Driving Photoinduced Hydrogen Evolution from Water, The 2010 Global COE International Symposium on Future Molecular Systems - Beyond Supramolecular Chemistry, 2010.06.
83.	酒井　健, ビオローゲン集合体を基盤とした人工光合成デバイスの構築と応用, 配位プログラミング　第3回全体会議, 2010.06.
84.	Ken Skai, Photoinduced Hydrogen Evolution from Water using Supramolecular Systems Functionalized with Photosensitizers, Charge Storage Components, and Pt(II)-based Molecular Catalysts, ISMSC2010, 2010.06.
85.	酒井　健, 水の分解触媒作用を有する金属錯体の合成と機能評価, 分子研研究会, 2010.02.
86.	Ken Sakai, Photo-Hydrogen-Evolving Molecular Devices Consisting of Tris(2,2'-bipyridine)ruthenium(II)-based Photosensitizers and Pt(II)-based Molecular Catalysts, the 2nd Asian Conference on Coordination Chemistry (2nd ACCC), 2009.11.
87.	Ken Sakai, MOLECULAR DEVICES TOWARDS THE DEVELOPMENT OF SOLAR LIGHT- DRIVEN WATER SPLITTING INTO MOLECULAR HYDROGEN AND OXYGEN , The 1st Kyushu University Global-COE/ Yonsei University BK21Joint Symposium, 2009.08.
88.	Ken Sakai, Hydrogen Production from Water Catalyzed by Bio-relevant and Non-bio-relevant Multinuclear Metal Complexes, ICBIC 14, 2009.07.
89.	Ken Sakai, Tris(2,2’-bipyridine)ruthenium(II)-based Photo-hydrogen-evolving Molecular Devices Using Platinum(II)- based Hydrogenic Activation, 18th ISPPCC, 2009.07.
90.	酒井　健, 水の分解触媒作用を有する金属多核錯体の合成と機能評価, 日本化学会第89春季年会, 2009.03.
91.	Ken Sakai, Mechanistic Studies on Photo-Hydrogen-Evolving Molecular Devices Consisting of Ru and Pt Centers, International Mini Symposium, 2009.03.
92.	Ken Sakai, Tirs(2,2’-bipyridine)ruthenium(II)-Based Photo-Hydrogen-Evolving Molecular Devices Using Pt(II)-Based Hydrogenic Activation, POSTEC/ Kyushu University Global-COE Joint Symposium on Polymers and Nanomaterials, 2009.02.
93.	Ken Sakai, Shigeyuki Masaoka, Masayuki Kobayashi, Saya Tanaka, Toshiki Yamaguchi, Kosei Yamauchi, Junpei Yokoyama, Masaki Yoshida, Catalysis of Some Multinuclear Systems in Water Splitting Process, The 4th Asian Biological Inorganic Chemistry Conference, 2008.11.
94.	Ken Sakai, Tirs(2,2’-bipyridine)ruthenium(II)-based photo-hydrogen-evolving molecular devices using Pt(II)-based hydrogenic activation, 7th Japan-China Joint Symposium on Metal Cluster Compounds, 2008.10.
95.	酒井 健・Bijitha Balan・小林真之・正岡重行, 過渡吸収分光法による光水素発生デバイスの反応機構解析, 第21回配位化合物の光化学討論会, 2008.08.
96.	酒井　健, 単一分子光水素発生デバイスの開発と機能制御, 「ナノサイエンス研究プロジェクト」研究発表会, 2008.06.
97.	酒井　健, 白金錯体を触媒活性部位に有する単一分子光水素発生デバイスの開発, 分子研研究会, 2008.03.
98.	酒井健, Tris(2,2’-bipyridine)ruthenium(II)-Based Photo-Hydrogen-Evolving Molecular Devices Using Pt(II)-Based Hydrogenic Activation, MIT　Prof. Stephen J. Lippard Special Symposium in Fukuoka, 2008.03.
99.	Ken Sakai, Satoru Takahashi, Hironobu Ozawa, Manabu Osada, Yuki Yokoyama, Kei Yamada, Masanari Hirahara, Masayuki Kobayashi, Reiko Okazaki, Junpei Yokoyama, Kosei Yamauchi, and Shigeyuki Masaoka, COORDINATION SPACE CONTROLLING THE FUNCTIONALITY OF PHOTO-HYDROGEN-EVOLVING MOLECULAR DEVICES CONSISTING OF PHOTOSENSITIZING AND CATALYTICALLY ACTIVE FRAGMENTS, 特定領域研究「配位空間の化学」ISCCS2007, 2007.12.
100.	Ken Sakai, Hironobu Ozawa, Photo-hydrogen-evolving molecular devices based on heteronuclear Ru(II)Pt(II) complexes possessing photosensitizing and catalytically active centers, The 3rd PKNU-KU Joint Symmposium on Sciences, 2007.11.
101.	酒井　健, 単一分子光水素発生デバイスの化学, 第5７回錯体化学討論シンポジウム「光を操る」―金属錯体の可能性―, 2007.09.
102.	Ken Sakai, Hironobu Ozawa, Recent success in the development of photo-hydrogen-evolving molecular devices consisting of Ru(II) and Pt(II) centers, The 41st IUPAC World Chemistry Congress, 2007.08.
103.	Ken Sakai, Photo-hydrogen-evolving molecular devices involving photosensitizing Ru(II) and catalytically active Pt(II) centers, The 1st Asian Conference on Coordination Compounds (ACCC), 2007.07.
104.	Ken Sakai, Photo-hydrogen-evolving molecular devices consisting of Ru(II) and Pt(II) centers, The 17th International Symposium on the Photochemistry and Photophysics of Coordination Compounds (ISPPCC), 2007.06.
105.	Ken Sakai, Masayuki Kobayashi, Shigeyuki Masaoka, DFT MO investigations on the photochemical H2 production from water catalyzed by Pt(II) complexes, The 1st International Symposium on Chemistry of Coordination Space (ISCCS2005) , 2005.11.

1.	酒井　健, KenX, 2002.08 単結晶X線構造解析ソフトShelxl97のグラフィカルユーザーインターフェース.

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