Kosuke Yamazoe
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View article: Observation of an Associative State in Aqueous Hydroxide
Observation of an Associative State in Aqueous Hydroxide Open
The dynamics of chemical reactions in solution are of paramount importance in fields ranging from biology to materials science. Because the hydrogen-bond network and proton dynamics govern the behavior of aqueous solutions, they have been …
View article: The role of carboxylate ligand orbitals in the breathing dynamics of a metal-organic framework by resonant X-ray emission spectroscopy
The role of carboxylate ligand orbitals in the breathing dynamics of a metal-organic framework by resonant X-ray emission spectroscopy Open
Metal-organic frameworks (MOFs) exhibit structural flexibility induced by temperature and guest adsorption, as demonstrated in the structural breathing transition in certain MOFs between narrow-pore and large-pore phases. Soft modes were s…
View article: Characterization of Soft Materials by Synchrotron Radiation X-ray Based Scattering and Spectroscopic Techniques
Characterization of Soft Materials by Synchrotron Radiation X-ray Based Scattering and Spectroscopic Techniques Open
放射光は，従来の実験室用X線源によって生成される光（X線）よりもはるかに明るく，軟X線から硬X線まで広いエネルギー領域にわたる光である．X線は光子エネルギーの減少とともに元素に敏感になる．放射光の広いエネルギー領域と高輝度かつ質の高い光を用いた散乱法と分光法は，さまざまなソフトマテリアルの構造・特性解析における強力なツールとなる．本論文では，著者らがこれまでに取り組んできた放射光を利用したソフトマテリアルの構造・特性解析の一例として，1）一軸延伸中のコロイド結晶のメカノクロ…
View article: Infrared Spectra and Hydrogen-Bond Configurations of Water Molecules at the Interface of Water-Insoluble Polymers under Humidified Conditions
Infrared Spectra and Hydrogen-Bond Configurations of Water Molecules at the Interface of Water-Insoluble Polymers under Humidified Conditions Open
Elucidating the state of interfacial water, especially the hydrogen-bond configurations, is considered to be key for a better understanding of the functions of polymers that are exhibited in the presence of water. Here, an analysis in this…
View article: Hydrogen-Bonded Structure of Water in the Loop of Anchored Polyrotaxane Chain Controlled by Anchoring Density
Hydrogen-Bonded Structure of Water in the Loop of Anchored Polyrotaxane Chain Controlled by Anchoring Density Open
Hydrogen-bonded network of water surrounding polymers is expected to be one of the most relevant factors affecting biocompatibility, while the specific hydrogen-bonded structure of water responsible for biocompatibility is still under deba…
View article: Graphical Abstract: Angew. Chem. Int. Ed. 52/2020
Graphical Abstract: Angew. Chem. Int. Ed. 52/2020 Open
Homogeneous CatalysisThefirst palladium-catalyzeds ite-selective a-a nd garylation of a,b-unsaturated ketones with (hetero)aryl halides is described by O. Y.
View article: Ion Selectivity of Water Molecules in Subnanoporous Liquid‐Crystalline Water‐Treatment Membranes: A Structural Study of Hydrogen Bonding
Ion Selectivity of Water Molecules in Subnanoporous Liquid‐Crystalline Water‐Treatment Membranes: A Structural Study of Hydrogen Bonding Open
We demonstrate hydrogen‐bonded structures of water in self‐organized subnanoporous water treatment membranes obtained using synchrotron‐based high‐resolution soft X‐ray emission spectroscopy. The ion selectivity of these water treatment me…
View article: Ion Selectivity of Water Molecules in Subnanoporous Liquid‐Crystalline Water‐Treatment Membranes: A Structural Study of Hydrogen Bonding
Ion Selectivity of Water Molecules in Subnanoporous Liquid‐Crystalline Water‐Treatment Membranes: A Structural Study of Hydrogen Bonding Open
We demonstrate hydrogen‐bonded structures of water in self‐organized subnanoporous water treatment membranes obtained using synchrotron‐based high‐resolution soft X‐ray emission spectroscopy. The ion selectivity of these water treatment me…
View article: Elucidation of Structure–Activity Correlations in a Nickel Manganese Oxide Oxygen Evolution Reaction Catalyst by Operando Ni L-Edge X-ray Absorption Spectroscopy and 2p3d Resonant Inelastic X-ray Scattering
Elucidation of Structure–Activity Correlations in a Nickel Manganese Oxide Oxygen Evolution Reaction Catalyst by Operando Ni L-Edge X-ray Absorption Spectroscopy and 2p3d Resonant Inelastic X-ray Scattering Open
Herein, we report the synthesis and electrochemical oxygen evolution experiments for a graphene-supported Ni3MnO4 catalyst. The changes that occur at the Ni active sites during the electrocatalyic oxygen evolution reaction (OER) were eluci…
View article: Measurements of ultrafast dissociation in resonant inelastic x-ray scattering of water
Measurements of ultrafast dissociation in resonant inelastic x-ray scattering of water Open
There has been a discussion on the interpretation of the resonant inelastic x-ray scattering (RIXS) spectra of liquid water in terms of either different structural environments or that core hole dynamics can generate well-resolved dissocia…
View article: Probing the OH Stretch in Different Local Environments in Liquid Water
Probing the OH Stretch in Different Local Environments in Liquid Water Open
We use resonant inelastic X-ray scattering (RIXS) to resolve vibrational losses corresponding to the OH stretch where the X-ray absorption process allows us to selectively probe different structural subensembles in liquid water. The result…