A5004297376- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Magnetism in coordination complexes
- Metal-Organic Frameworks: Synthesis and Applications
- Crystallography and molecular interactions
- Metal complexes synthesis and properties
- Advanced Condensed Matter Physics
- Organic and Molecular Conductors Research
- Magnetic and transport properties of perovskites and related materials
- Lanthanide and Transition Metal Complexes
- Multiferroics and related materials
- Porphyrin and Phthalocyanine Chemistry
- Ferroelectric and Piezoelectric Materials
- Luminescence and Fluorescent Materials
- Molecular Sensors and Ion Detection
- Supramolecular Chemistry and Complexes
- Machine Learning in Materials Science
- Physics of Superconductivity and Magnetism
- Rare-earth and actinide compounds
- Organometallic Complex Synthesis and Catalysis
- Metal-Catalyzed Oxygenation Mechanisms
- Crystal structures of chemical compounds
- Covalent Organic Framework Applications
- Fullerene Chemistry and Applications
- Acoustic Wave Resonator Technologies
Kindai University
1997-2025
Japan Synchrotron Radiation Research Institute
2015-2024
SPring-8
2015-2024
Osaka University
2023
RIKEN Center for Emergent Matter Science
2023
The University of Tokyo
2023
Kyoto University
2019-2022
University of Oxford
2022
John Wiley & Sons (United Kingdom)
2022
Hudson Institute
2022
Chemosensors detect a single target molecule from among several molecules, but cannot differentiate targets one another. In this study, we report molecular decoding strategy in which host domain accommodates class of molecules and distinguishes between them with corresponding readout. We synthesized the by embedding naphthalenediimide into scaffold an entangled porous framework that exhibited structural dynamics due to dislocation two chemically non-interconnected frameworks. An intense...
In this study, we developed a user-friendly automatic powder diffraction measurement system for Debye-Scherrer geometry using capillary sample at beamline BL02B2 of SPring-8. The consists six one-dimensional solid-state (MYTHEN) detectors, compact auto-sampler, wide-range temperature control systems, and gas handling system. This enables to do the dependence patterns multiple samples. We introduced two modes in MYTHEN new attachments environment such as can offer situ and/or time-resolved...
Rubrene is one of the most studied organic semiconductors to date due its high charge carrier mobility which makes it a potentially applicable compound in modern electronic devices. Previous device characterizations and first principles theoretical calculations assigned semiconducting properties rubrene presence large overlap extended π-conjugated core between molecules. We present here electron density distribution at 20 K 100 obtained using combination high-resolution X-ray neutron...
Abstract Water confined within one-dimensional (1D) hydrophobic nanochannels has attracted significant interest due to its unusual structure and dynamic properties. As a representative system, water-filled carbon nanotubes (CNTs) are generally studied, but direct observation of the crystal proton transport is difficult for CNTs their poor crystallinity high electron conduction. Here, we report unique water-cluster conduction realized in metal-organic nanotube, [Pt(dach)(bpy)Br] 4 (SO ) ·32H...
An alternated 1:1 chain compound of a Mn(III) salen derivative and the TCNQ monoradical was synthesized: [Mn(5-TMAMsaltmen)(TCNQ)](ClO(4))(2) (1) (TCNQ=tetracyano-p-quinodimethane; 5-TMAMsaltmen=N,N'-(1,1,2,2-tetramethylethylene) bis(5-trimethylammoniomethylsalicylideneiminato)). Compound 1 has zigzag structure packed with adjacent chains an interchain MnMn distance over 8 Angatrom. As contains no crystallization solvent, void spaces between are occupied only by ClO(4) (-) counter ions....
The isostructural series of two-dimensional (2-D) fishnet-type network compounds, [{Ru(2)(O(2)CCF(3))(4)}(2)(TCNQR(x))] x n(solv) (R(x) = H(4), 1; Br(2), 2; Cl(2), 3; F(2), 4; F(4), 5), has been synthesized from the reactions a paddlewheel diruthenium(II, II) complex, [Ru(2)(II,II)(O(2)CCF(3))(4)], and neutral TCNQ derivatives (TCNQR(x) 2,3,5,6- or 2,5-halogen-substituted 7,7,8,8-tetracyanoquinodimethane) under anaerobic conditions. Corresponding Rh compounds 1-Rh-5-Rh, which are diamagnetic...
The pyrochlore-type iridium oxide Eu${}_{2}$Ir${}_{2}$O${}_{7}$ exhibits a metal-insulator transition at 120 K, accompanied by magnetic ordering. We used x-ray diffraction measurements with photon energies near the ${L}_{3}$ absorption edge to analyze single crystal investigate arrangement of Ir${}^{4+}$ moments. Resonant scattering $\left(4n+2\phantom{\rule{0.16em}{0ex}}0\phantom{\rule{0.16em}{0ex}}0\right)$ was observed in insulating phase, providing direct evidence long-range ordering...
Hematite (α-Fe2O3) is one of the most promising candidates as a photoanode materials for solar water splitting. Owing to difficulty in suppressing significant charge recombination, however, photoelectrochemical (PEC) conversion efficiency hematite still far below theoretical limit. Here we report thick films (∼1500 nm) constructed by highly ordered and intimately attached mesocrystals (MCs) efficient PEC oxidation. Due formation abundant interfacial oxygen vacancies yielding high carrier...
${\mathrm{Cd}}_{2}{\mathrm{Os}}_{2}{\mathrm{O}}_{7}$ shows a peculiar metal-insulator transition at 227 K with magnetic ordering in frustrated pyrochlore lattice, but its structure the ordered state and origin are yet uncovered. We observed commensurate peak by resonant x-ray scattering high-quality single crystal. X-ray diffraction Raman experiments confirmed that is not accompanied any spatial symmetry breaking. propose noncollinear all-in--all-out spin arrangement on tetrahedral network...
Self-assembly of artificial nanoscale units into superstructures is a prevalent topic in science. In biomimicry, scientists attempt to develop self-assembled nanoarchitectures. However, despite extensive efforts, the preparation nanoarchitectures with superior physical properties remains challenge. For example, one major topics field molecular magnetism development high-spin (HS) molecules. Here, we report cyanide-bridged magnetic nanocage composed 18 HS iron(III) ions and 24 low-spin...
Abstract The design of inexpensive and less toxic porous coordination polymers (PCPs) that show selective adsorption or high capacity is a critical issue in research on applicable materials. Although use Group II magnesium(II) calcium(II) ions as building blocks could provide cheaper materials lead to enhanced biocompatibility, examples PCPs are extremely limited compared with commonly used transition metal ones, because neutral bridging ligands have not been available for ions. Here we...
The demand for powder X-ray diffraction analysis continues to increase in a variety of scientific fields, as the excellent beam quality high-brightness synchrotron light sources enables acquisition high-quality measurement data with high intensity and angular resolution. Synchrotron has enabled rapid many samples various situ / operando experiments nonambient sample environments. To meet demands even higher throughput measurements using high-energy X-rays at SPring-8, high-throughput...
A series of disilane-bridged donor-acceptor architectures 1-9 containing strong electron-donating and -withdrawing substituents were designed synthesized in acceptable yields. The substantially affected the fluorescence nonlinear optical properties compounds. In solid state, compounds showed purple-blue (λ(em) = 360-420 nm) with high quantum yields (up to 0.81). Compound 3, which had p-N,N-dimethylamino o-cyano substituents, exhibited second harmonic generation (activity 2.9 times that urea,...
Spinel FeV${}_{2}$O${}_{4}$ exhibits successive structural phase transitions, reflecting the interplay between Fe${}^{2+}$ (3${d}^{6}$) and V${}^{3+}$ (3${d}^{2}$) ions, both of which have orbital spin degrees freedom. The temperature-dependent shapes were investigated by means single-crystal structure analysis, compared with those in MnV${}_{2}$O${}_{4}$, where only ions are Jahn-Teller active. highest-temperature transition from cubic to high-temperature tetragonal was driven a ferroic...
One-dimensional coordination polymers (1D-CPs) tend either to dissociate into constitutive ligands and metals readily in solution, or aggregate randomly amorphously, which prevents them from widespread application. In the present research, 1D-CPs comprising bridging dipyrrin divalent metal ions (Zn2+, Ni2+, Cu2+) are synthesized. A liquid/liquid interfacial reaction gives rise single crystals suitable for X-ray diffraction analysis: dichloromethane solution of ligand is layered with aqueous...
In metals, orbital motions of conduction electrons on the Fermi surface are quantized in magnetic fields, which is manifested by quantum oscillations electrical resistivity. This Landau quantization generally absent insulators. Here we report a notable exception an insulator, ytterbium dodecaboride (YbB12). Despite much larger than that resistivity YbB12 exhibits profound oscillations. unconventional oscillation shown to arise from insulating bulk, yet temperature dependence their amplitude...
Recently, metal-organic frameworks (MOFs) composed of sulfur secondary building units (sulfur-SBUs) have attracted significant attention as unique electronic materials with high conductivities and photo- electrocatalytic properties. Herein we report the crystal structure KGF-1, an example a Pb-MOF three-dimensionally extended sulfur-SBUs that displays molecular sieving behavior, visible-light absorption, semiconductor band is hydrogen-evolution photocatalyst.
Coordination polymers exhibiting mechanical flexibility including elastic or plastic bending are rare. Here, we report an example of a mechanically flexible one-dimensional coordination polymer that shows bending. Quantitative insights on the inter and intra-chain bonding as well structural from combination techniques variable temperature single crystal X-ray diffraction (XRD), high-pressure crystallography (ambient─15 GPa), synchrotron micro-XRD mapping bent crystal, high-resolution charge...