Kenichi Oyaizu​​​​​​​
Professor, Department of Applied Chemistry, Department of Advanced Science and Engineering, and Department of Nanoscience and Nanoengineering, Graduate School of Advanced Science and Engineering, Faculty of Science and Engineering, WASEDA University, Tokyo 169-8555, Japan
Publication in Press
Y. Igarashi, K. Hatakeyama-Sato, K. Kitagawa, R. Shinozaki, K. Oyaizu, “Precise Potential Tuning for Polymer-mediated Aqueous Redox Flow Battery with Lithium Iron Phosphate as Target Cathode”, ACS Appl. Polym. Mater., in press (2024). DOI: 10.1021/acsapm.3c01723
S. Watanabe, Y. Tsunekawa, T. Takayama, K. Oyaizu, “Diverse Side-chain Transformation of High Refractive Index Methylthio-substituted Poly(phenylene sulfide)s”, Macromolecules, in press (2024). DOI: 10.1021/acs.macromol.4c00054
S. Watanabe, L. M. Cavinato, V. Calvi, R. van Rijn, R. D. Costa, K. Oyaizu, “Polarizable H-bond Concept in Aromatic Poly(thiourea)s: Unprecedented High Refractive Index, Transmittance and Degradability at Force to Enhance Lighting Efficiency”, Adv. Funct. Mater., in press (2024).
Functional Polymers
w/ DOI Links
[Reviews] 
K. Oyaizu, “Reversible and High-density Energy Storage with Polymers Populated with Bistable Redox Sites”, Polym. J., 56, 127-144 (2024). DOI: 10.1038/s41428-023-00857-7
K. Hatakeyama-Sato, K. Oyaizu, “Redox: Organic Robust Radicals and Their Polymers for Energy Conversion/Storage Devices”, Chem. Rev., 123, 11336-11391 (2023). DOI: 10.1021/acs.chemrev.3c00172
Y. Xie, K. Zhang, Y. Yamauchi, K. Oyaizu, Z. Jia, “Nitroxide Radical Polymers for Emerging Plastic Energy Storage and Organic Electronics: Fundamentals, Materials, and Applications”, Mater. Horiz., 8, 803-829 (2021). DOI: 10.1039/D0MH01391A
K. Nakahara, K. Oyaizu, H. Nishide, “Organic Radical Battery Approaching Practical Use”, Chem. Lett. (Highlight Review), 40, 222-227 (2011). DOI: 10.1246/cl.2011.222
K. Oyaizu, H. Nishide, “Radical Polymers for Organic Electronics: A Radical Departure from Conjugated Polymers?”, Adv. Mater., 21, 2339-2344 (2009). DOI: 10.1002/adma.200803554
H. Nishide, K. Oyaizu, “Toward Flexible Batteries”, Science, 319, 737-738 (2008). DOI: 10.1126/science.1151831
[Online Articles]
“Electronic Laboratory Notebook for Materials Science: A Lossless Data Management Platform for Machine Learning and Sharing of Experimental Information”, Waseda University News, 2022.9.21.
“Machine Learning Helps Create Polymer Electrolyte for Batteries”, K. O'Brien, Advanced Science News, 2022.7.19.
[Reviews]
S. Watanabe, K. Oyaizu,* “Designing Strategy for High Refractive Index Polymers: From the Molecular Level to Bulk Structure Control”, Bull. Chem. Soc. Jpn. (Accounts), 96, 1108-1128 (2023). DOI: 10.1246/bcsj.20230177
F. Aida, K. Oyaizu,* “Emerging Organosulfonium Electrophiles as Unique Reagents for Carbon-sulfur Bond Formation: Prospects in Synthetic Chemistry of Organosulfur Compounds”, Chem. Lett. (Highlight Review), 45, 102-109 (2016). DOI: 10.1246/cl.151035
[Reviews]
K. Oyaizu, “Reversible and High-density Energy Storage with Polymers Populated with Bistable Redox Sites”, Polym. J., 56, 127-144 (2024). DOI: 10.1038/s41428-023-00857-7
Y. Kaiwa, K. Kobayashi, M. Kataoka, Y. Tobita, K. Oyaizu*, “Polymers for Reversible Hydrogen Storage Inspired by Electrode-active Materials in Organic Batteries”, Int. J. Soc. Mater. Eng. Resour., 25, 1-9 (2022). DOI: 10.5188/ijsmer.25.1
[Reviews]
M. Yuasa, K. Oyaizu, “Electrochemical Detection and Sensing of Reactive Oxygen Species”, Curr. Org. Chem., 9, 1685-1697 (2005). DOI: 10.2174/138527205774610921
E. Tsuchida, K. Oyaizu, “Oxovanadium(III-V) Mononuclear Complexes and Their Linear Assemblies Bearing Tetradentate Schiff Base Ligands: Structure and Reactivity as Multielectron Redox Catalysts”, Coord. Chem. Rev., 237, 213-228 (2003). DOI: 10.1016/S0010-8545(02)00251-5
Online Articles
“A Novel, Completely Solid, Rechargeable Air Battery”, Waseda University News, 2023.6.12.
“A Novel, Completely Solid, Rechargeable Air Battery”, EurekAlert!, 2023.6.12.
“Electronic Laboratory Notebook for Materials Science: A Lossless Data Management Platform for Machine Learning and Sharing of Experimental Information”, Waseda University News, 2022.9.21.
“Electronic Laboratory Notebook for Materials Science: A Lossless Data Management Platform for Machine Learning and Sharing of Experimental Information”, EurekAlert!, 2022.9.21.
“Machine Learning Helps Create Polymer Electrolyte for Batteries”, K. O'Brien, Advanced Science News, 2022.7.19.
“Breakthrough Innovations in Functional Polymer Research at Waseda University”, Waseda University News, 2022.7.12.
“Polymer Parts for Greener Rechargeable Batteries”, Nature, 2021.3.25.
“Hydrogen in Your Pocket? New Plastic for Carrying and Storing Hydrogen”, EurekAlert!, 2016.11.28.
“Hydrogen in Your Pocket? Developing Portable Hydrogen-stored Plastic”, Waseda University News, 2016.10.7.
“Lithium-ion Batteries: Research”, Physics Central, American Physical Society, 2008.
Open Access Papers
S. Hasebe, K. Hatakeyama-Sato, K. Oyaizu, T. Asahi, H. Koshima, “Prediction of Photochromism of Salicylideneaniline Crystals Using a Data Mining Approach”, ACS Omega, 9, 1463-1471 (2024). DOI: 10.1021/acsomega.3c07859
S. Watanabe, K. Oyaizu,* “Designing Strategy for High Refractive Index Polymers: From the Molecular Level to Bulk Structure Control”, Bull. Chem. Soc. Jpn. (Accounts), 96, 1108-1128 (2023). DOI: 10.1246/bcsj.20230177
K. Oka, Y. Kaiwa, K. Kobayashi, Y. Tobita, K. Oyaizu,* “Accelerating the Dehydrogenation Reaction of Alcohols by Introducing Them into Poly(allylamine)”, Polym. Chem., 14, 2588-2591 (2023). DOI: 10.1039/D3PY00404J
K. Hatakeyama-Sato,* K. Sadakuni, K. Kitagawa, K. Oyaizu,* “Thianthrene Polymers as 4 V-class Organic Mediators for Redox Targeting Reaction with LiMn2O4 in Flow Batteries”, Sci. Rep., 13, 5711 (2023). DOI: 10.1038/s41598-023-32506-7
K. Hatakeyama-Sato,* Y. Igarashi, K. Oyaizu*, “Charge-transport Kinetics of Dissolved Redox-active Polymers for Rational Design of Flow Batteries”, RSC Adv., 13, 547-557 (2023). DOI: 10.1039/d2ra07208d
S. Watanabe, T. Takayama, K. Oyaizu, “Transcending the Trade-off in Refractive Index and Abbe Number for Highly Refractive Polymers: Synergistic Effect of Polarizable Skeletons and Robust Hydrogen Bonds”, ACS Polym. Au, 2, 458-466 (2022). DOI: 10.1021/acspolymersau.2c00030
K. Hatakeyama-Sato,* M. Umeki, H. Adachi, N. Kuwata, G. Hasegawa, K. Oyaizu,* “Exploration of Organic Superionic Glassy Conductors by Process and Materials Informatics with Lossless Graph Database”, npj Comput. Mater. (2022). DOI: 10.1038/s41524-022-00853-0
K. Hatakeyama-Sato,* K. Oyaizu,* “Generative Models for Extrapolation Prediction in Materials Informatics”, ACS Omega (2021). DOI: 10.1021/acsomega.1c01716
K. Hatakeyama-Sato,* T. Kashikawa, K. Kimura, K. Oyaizu,* “Tackling the Challenge of a Huge Materials Science Search Space with Quantum-Inspired Annealing”, Adv. Intell. Syst. (2021). DOI: 10.1002/aisy.202000209
J. Miyake, Y. Ogawa, T. Tanaka, J. Ahn, K. Oka, K. Oyaizu, K. Miyatake,* “Rechargeable Proton Exchange Membrane Fuel Cell Containing an Intrinsic Hydrogen Storage Polymer”, Communn. Chem. (2020). DOI: 10.1038/s42004-020-00384-z
K. Oka, R. Löfgren, R. Emanuelsson, H. Nishide, K. Oyaizu,* M. Strømme, M. Sjödin,* “Conducting Redox Polymer as Organic Anode Material for Polymer-manganese Secondary Batteries”, ChemElectroChem (2020). DOI: 10.1002/celc.202000711
K. Hatakeyama-Sato, K. Oyaizu,* “Integrating Multiple Materials Science Projects in a Single Neural Network”, Commun. Mater. (2020). DOI: 10.1038/s43246-020-00052-8
K. Hatakeyama-Sato, T. Tezuka, Y. Nishikitani, H. Nishide, K. Oyaizu,* “Synthesis of Lithium-ion Conducting Polymers Designed by Machine Learning-based Prediction and Screening”, Chem. Lett. (Editor's Choice) (2019). DOI: 10.1246/cl.180847
R. Kato, K. Yoshimasa, T. Egashira, T. Oya, K. Oyaizu, H. Nishide,* “A Ketone/alcohol Polymer for Cycle of Electrolytic Hydrogen-fixing with Water and -releasing under Mild Conditions”, Nature Commun. (2016). DOI: 10.1038/ncomms13032
K. Oyaizu, T. Sukegawa, H. Nishide, “Dual Dopable Poly(phenylacetylene) with Nitronyl Nitroxide Pendants for Reversible Ambipolar Charging and Discharging”, Chem. Lett. (Editor’s Choice) (2011). DOI: 10.1246/cl.2011.184