A5072010704- Advanced Chemical Physics Studies
- X-ray Spectroscopy and Fluorescence Analysis
- Electron and X-Ray Spectroscopy Techniques
- Atomic and Molecular Physics
- Spectroscopy and Quantum Chemical Studies
- Mass Spectrometry Techniques and Applications
- Molecular Junctions and Nanostructures
- Catalytic Processes in Materials Science
- Photochemistry and Electron Transfer Studies
- Magnetism in coordination complexes
- Advanced X-ray Imaging Techniques
- Inorganic Fluorides and Related Compounds
- Organic and Molecular Conductors Research
- Spectroscopy and Laser Applications
- Surface and Thin Film Phenomena
- Surface Chemistry and Catalysis
- Porphyrin and Phthalocyanine Chemistry
- Electrochemical Analysis and Applications
- Nuclear Physics and Applications
- Physics of Superconductivity and Magnetism
- Graphene research and applications
- Copper-based nanomaterials and applications
- Chalcogenide Semiconductor Thin Films
- ZnO doping and properties
- Metal complexes synthesis and properties
Institute for Molecular Science
2015-2025
Institute of Materials Structure Science
2019-2024
High Energy Accelerator Research Organization
2019-2023
National Institutes of Natural Sciences
1994-2023
The Graduate University for Advanced Studies, SOKENDAI
2013-2022
Linac Coherent Light Source
2016
Aoyama Gakuin University
2013
RIKEN Advanced Science Institute
2010
Nanjing University
2010
KTH Royal Institute of Technology
2010
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotocatalytic decomposition of water into hydrogen and oxygen over nickel(II) oxide-strontium titanate (SrTiO3) powder. 1. Structure the catalystsKazunari Domen, Akihiko Kudo, Takaharu Onishi, Nobuhiro Kosugi, Haruo KurodaCite this: J. Phys. Chem. 1986, 90, 2, 292–295Publication Date (Print):January 1, 1986Publication History Published online1 May 2002Published inissue 1 January...
The electron energy loss and X-ray absorption spectra of two phases titanium dioxide-rutile anatase-are reported. Although the nearest-neighbour environments oxygen in both these structures are very similar, noticeable differences observed between spectra. Attempts to model using real-space multiple-scattering calculations reasonably successful at Ti K O edges. authors propose an interpretation L2.3 edge, notably for presence a previously unobserved splitting on L3 edge.
The fabrication of multidimensional organometallic halide perovskite via a low-pressure vapor-assisted solution process is demonstrated for the first time. Phenyl ethyl-ammonium iodide (PEAI)-doped lead (PbI2 ) spin-coated onto substrate and subsequently reacts with methyl-ammonium (MAI) vapor in heating oven. doping ratio PEAI MAI-vapor-treated has significant impact on crystalline structure, surface morphology, grain size, UV-vis absorption photoluminescence spectra, resultant device...
The electronic structure of the formally ${\mathrm{Cu}}^{3+}$ (${\mathit{d}}^{8}$) compound ${\mathrm{NaCuO}}_{2}$ has been studied by photoemission spectroscopy and subsequent cluster configuration-interaction calculations. We find that ${\mathit{d}}^{8}$\ensuremath{\rightarrow}${\mathit{d}}^{9}$L (L: ligand hole) charge-transfer energy is negative ground state dominated ${\mathit{d}}^{9}$L configuration. band gap corresponds to charge fluctuations type...
Nanodiamonds exhibit exceptional colloidal properties in aqueous media that lead to a wide range of applications nanomedicine and other fields. Nevertheless, the role surface chemistry on hydration nanodiamonds remains poorly understood. Here, we probed water hydrogen bond network dispersions by infrared, Raman, X-ray absorption spectroscopies applied situ environment. Aqueous with hydrogenated, carboxylated, hydroxylated, polyfunctional terminations were compared. A different was found...
Photoinduced quantum dynamics in molecules have hierarchical temporal structures with different energy scales that are associated electron and nuclear motions. Femtosecond-to-attosecond transient absorption spectroscopy (TAS) using high-harmonic generation (HHG) a photon below 300 eV has been powerful tool to observe such table-top manner. However, comprehensive measurements of the electronic, vibrational, rotational molecular not yet achieved. Here, we demonstrate HHG-based TAS at nitrogen...
High-resolution soft X-ray photoelectron spectra of liquid water (H(2)O and D(2)O) were measured using a beam spectrometer. The 1a(1) (O1s) band the lowest valence 1b(1) had single peaks, which is not consistent with split 1b(1)→ emission if splitting assumed to originate from level shifts in two different hydrogen bonding structures. second 3a(1) exhibited flat top implying that bands exist underneath broad feature, similar case amorphous ice. energy between estimated be 1.38 eV (H(2)O)...
In situ O K-edge X-ray absorption fine structure (XAFS) spectroscopy was applied to investigate the electronic and structural change in nickel–borate (Ni–Bi) electrocatalyst during oxygen evolution reaction (OER). An peak observed around 528.7 eV at 1.0 V versus Ag/AgCl a potassium borate aqueous solution, which relates with formation of nanoscale order domains edge-sharing NiO6 octahedra Ni–Bi electrocatalyst. XAFS spectra were measured variation electrode potential from 0.3 up V. The peaks...
Liquid methanol shows one- and two-dimensional (1D/2D) hydrogen bond (HB) networks, liquid water three-dimensional (3D) HB networks. We have clearly found three different local structures around the methyl group of methanol-water binary solutions (CH3OH)X(H2O)1-X at concentrations in C K-edge soft X-ray absorption spectroscopy (XAS). With help molecular dynamics simulations, we discussed concentration dependence hydrophobic interaction XAS spectra. In methanol-rich region I (1.0 > X 0.7), a...
We investigated Pt-induced nanowires on the Si(110) surface using scanning tunneling microscopy (STM) and angle-resolved photoemission. High resolution STM images show a well-ordered nanowire array of 1.6 nm width 2.7 separation. Angle-resolved photoemission reveals fully occupied one-dimensional (1D) bands with Rashba-type split dispersion. Local $dI/dV$ spectra further indicate well-confined 1D electron channels nanowires, whose density states characteristics are consistent band splitting....
Carbon K-edge NEXAFS spectra of chrysene, perylene, and coronene were measured using synchrotron radiation, the results analyzed by ab initio molecular orbital (MO) calculations. The do not agree well with calculated density unoccupied states (DOUS), indicating significant core-hole effect leading to deviation from DOUS. On other hand, observed simulated theoretical calculations taking this into account improved virtual method. This allowed a detailed analysis effect, which affects both...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of NaY-entrapped hexadecacarbonylhexarhodium cluster by FTIR and EXAFS spectroscopies the catalytic behavior in carbon-13 monoxide isotopic exchange reactionLing Fen. Rao, Atsushi. Fukuoka, Nobuhiro. Kosugi, Haruo. Kuroda, Masaru. IchikawaCite this: J. Phys. Chem. 1990, 94, 13, 5317–5327Publication Date (Print):June 1, 1990Publication History Published online1 May 2002Published inissue 1 June...
Abstract X-Ray absorption spectra of the sulfur K-edges SO42−, SO32−, S2O32−, and S2Ox2− (x=5–8) were measured with synchrotron radiation. The show similarly strong bands which originate in bound-state transitions to antibonding 3p-type orbitals shape resonances related 3d-type orbitals. K-edge spectrum for terminal atom however, shows only a transition. Differences chemical environments bonding around X-ray absorbing atoms are discussed interpret spectra.
The insulating oxide ${\mathrm{NaCuO}}_{2}$ has been studied by x-ray photoemission spectroscopy and subsequent cluster-model analysis. It is found that the ${\mathit{d}}^{8}$\ensuremath{\rightarrow}${\mathit{d}}^{9}$L charge-transfer energy (L:ligand hole) negative ground state dominated ${\mathit{d}}^{9}$L configuration. Using Anderson impurity model, it shown strong 3d-ligand hybridization opens a band gap for energy. This corresponds to charge fluctuations mainly of p-p type,...