A5065493911- Advancements in Battery Materials
- Renal Transplantation Outcomes and Treatments
- Advanced NMR Techniques and Applications
- Advanced Battery Materials and Technologies
- biodegradable polymer synthesis and properties
- Polymer crystallization and properties
- Silk-based biomaterials and applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Organ Transplantation Techniques and Outcomes
- Supercapacitor Materials and Fabrication
- Polymer Nanocomposites and Properties
- Conducting polymers and applications
- Luminescence and Fluorescent Materials
- Ferroelectric and Piezoelectric Materials
- Microplastics and Plastic Pollution
- Organic Electronics and Photovoltaics
- Renal and Vascular Pathologies
- Anodic Oxide Films and Nanostructures
- Neuropeptides and Animal Physiology
- Pharmacological Effects and Toxicity Studies
- Synthesis and Properties of Aromatic Compounds
- Nanocomposite Films for Food Packaging
- Polymer Surface Interaction Studies
- Carbon dioxide utilization in catalysis
JEOL (Japan)
2014-2024
Musashino Academia Musicae
2021
Osaka University
2001-2014
Tokyo University of Agriculture and Technology
2011-2014
Tokyo Institute of Technology
2003-2012
Hyogo Prefectural Nishinomiya Hospital
1998-2012
Osaka Prefectural Medical Center
2012
Tokyo University of Agriculture
2012
Gunma University
2008-2011
National Institute for Materials Science
2010-2011
Crystalline structure and molecular dynamics in α α′ crystals of poly(l-lactide) (PLLA) PLLA/poly(d-lactide) (PDLA) stereocomplex (sc) have been investigated by the temperature-variable FTIR solid-state 13C CP-MAS NMR spectroscopy. The crystal forms polylactide (PLA) different band frequencies, correlation field splittings spectra line shapes, resonance spectra, which become more distinct with cooling to cryogenic conditions. well-resolved resonances crystals, attributable...
Abstract Electric double-layer capacitors are efficient energy storage devices that have the potential to account for uneven power demand in sustainable systems. Earlier attempts improve an unsatisfactory capacitance of electric focused on meso- or nanostructuring increase accessible surface area and minimize distance between adsorbed ions electrode. However, dielectric constant electrolyte solvent embedded electrode surface, which also governs capacitance, has not been previously exploited...
Abstract Oxygen‐redox‐based cathode materials for sodium‐ion batteries (SIBs) have attracted considerable attention in recent years owing to the possibility of delivering additional capacity high‐voltage region. However, they still suffer from not only fast fading but also poor rate capability. Herein, P2‐Na 0.75 [Li 0.15 Ni Mn 0.7 ]O 2 is introduced, an oxygen‐redox‐based layered oxide material SIBs. The effect doping on electrochemical performance investigated by comparison with Ni‐free...
Isomerism in covalent organic frameworks (COFs) has scarcely been known. Here, for the first time we show 3D COFs with three framework isomers or polymorphs constructed from same building blocks. All were obtained as large (>10 μm) crystals; although their crystal shapes distinctly different, they showed identical FT-IR and solid-state NMR spectra. Our structural analyses revealed unprecedented triple isomerism (noninterpenetrated dia, qtz, 3-fold interpenetrated dia-c3 nets). Furthermore,...
The enhancement effect of nucleation in immiscible blend systems has recently attracted interest. Although several authors have reported that the occurs at phase interface, little is known about mechanism involved. We focused on poly(l-lactide) (PLLA)/poly(ϵ-caprolactone) (PCL) which presence PCL enhanced PLLA low temperature. investigated behavior during aging temperatures below Tg. Generally, neat polymers, including PLLA, seldom generate nuclei Tg due to restrictions chain mobility....
The fabrication of novel oxide glass is a challenging topic in science. Alumina (Al2O3) cannot be fabricated by conventional melt-quenching method, since Al2O3 not former. We found that amorphous synthesized the electrochemical anodization aluminum metal shows transition. neutron diffraction pattern exhibits an extremely sharp peak owing to significantly dense packing oxygen atoms. Structural modeling based on X-ray/neutron and NMR data suggests average Al-O coordination number 4.66 confirms...
Abstract Oxygen‐redox‐based‐layered cathode materials are of great importance in realizing high‐energy‐density sodium‐ion batteries (SIBs) that can satisfy the demands next‐generation energy storage technologies. However, Mn‐based‐layered (P2‐type Na‐poor Na y [A x Mn 1−x ]O 2 , where A = alkali ions) still suffer from poor reversibility during oxygen‐redox reactions and low conductivity. In this work, dual Li Co replacement is investigated P2‐type‐layered MnO . Experimentally theoretically,...
The molecular structure and dynamics of regioregulated poly(3-butylthiophene) (P3BT), poly(3-hexylthiophene) (P3HT), poly(3-dodecylthiophene) (P3DDT) were investigated using Fourier-transform infrared absorption (FTIR), solid-state $^{13}\mathrm{C}$ nuclear-magnetic resonance (NMR), differential-scanning calorimetry (DSC) measurements. In the DSC measurements, endothermic peak was obtained around $340\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ in P3BT, assigned to enthalpy relaxation that...
The glass transition and physical aging processes of poly(L-lactide) (PLLA) were studied by variable-temperature Fourier transform infrared (FTIR) spectroscopy (13)C solid-state NMR spectroscopy. temperature (T(g)) PLLA can be well determined from the temperature-dependent FTIR intensity. Nearby T(g), a distinct change in slope spectral intensity versus plot is detected. results suggest that energy-favorable gauche-trans (gt) conformers rearrange into less gauche-gauche (gg) counterparts...
We have previously suggested that crystalline Bombyx mori silk in II form (the structure after spinning) is not a simple antiparallel β-sheet but intrinsically heterogeneous. Using the peptide (AG)15, we obtained first fully assigned high resolution solid state 1H NMR spectrum. Distinct heterogeneity was observed, both and 13C CP/MAS signals. Based on these results, new model proposed contains two different packing arrangements of β-sheets. The structures were energetically minimized by...
The molecular structure and dynamics of regioregulated poly(3-hexylthiophene) (P3HT) were investigated using high-resolution solid-state 13C nuclear magnetic resonance (NMR) optical absorption spectroscopies. A crystal (C)−plastic (PC) transition induced by the motion aliphatic side group was observed for P3HT in temperature dependence analysis NMR spectra spin−lattice relaxation time (T1C). crystalline state weakened intermolecular π−π interaction, resulting blue shift characteristic...
Vitamin D, often deficient in kidney transplant (KTx) recipients, has potential immunomodulatory effects.This study aimed to evaluate whether vitamin D status affects the rate of decline allograft function.The included a prospective cohort 264 ambulatory KTx recipients at single Japanese center.We measured baseline 25-hydroxyvitamin (25D) concentration and examined its association with annual estimated glomerular filtration (eGFR). Secondary outcome was rescue treatment iv methylprednisolone...
Mesenchymal stem cells (MSCs) are an attractive therapeutic cell source for treating renal diseases. MSC administration has been shown to improve function, although the underlying mechanisms not completely understood. We recently showed that allogenic fetal membrane-derived MSCs (FM-MSCs), which available noninvasively in large amounts, had a renoprotective effect experimental glomerulonephritis model. Here we investigated whether FM-MSC could protect kidneys from ischemia/reperfusion (I/R)...
In addition to its abundance and easy accessibility, adipose tissue yields more potent immunoregulatory stem cells (adipose tissue-derived cells, ADSCs) than does bone marrow. However, the beneficial effects of ADSCs on alloreactivity are scarcely known. This study evaluated in rat kidney transplantation analyzed underlying molecular mechanism.Dark Agouti kidneys were transplanted into Lewis rats. Autologous (2×10) injected through left renal artery donors before nephrectomy (ADSCs group)....
The accurate 1H positions of alanine-glycine alternating copolypeptide, (AG)15 with Silk I structure were determined. For the purpose, geometry optimization was performed starting atomic coordinates hetero atoms reported previously (Macromolecules 2005, 38, 7397−7403) and applied only for protons under periodic boundary conditions. agreement between calculated observed chemical shifts all 1H,13C 15N nuclei excellent, indicating strongly that determination atomic-coordinate including high...
The present study evaluated the specific intermolecular interactions between carbamazepine (CBZ) and substituents of hypromellose acetate succinate (HPMC-AS), as well mechanism inhibition recrystallization solid dispersions (SDs) using Fourier-transform infrared (FTIR) solid-state nuclear magnetic resonance (NMR) spectroscopy. CBZ HPMC derivatives, including HPMC, (HPMC-A), (HPMC-S), were spray-dried to prepare CBZ/polymer samples (SPDs). CBZ/HPMC SPD CBZ/HPMC-A recrystallized within 10 days...
Abstract Lithium- and manganese-rich layered oxides (LMRs) are promising positive electrode materials for next-generation rechargeable lithium-ion batteries. Herein, the structural evolution of Li 1.2 Ni 0.2 Mn 0.6 O 2 during initial charge–discharge cycle was examined using synchrotron-radiation X-ray diffraction, absorption spectroscopy, nuclear magnetic resonance spectroscopy to elucidate unique delithiation behavior. The pristine material contained a composite structure composed Ni-free...
Li7P3S11 glass ceramics have high conductivities competitive with liquid electrolytes, making them good candidates as solid-state electrolytes for all-solid-state lithium-ion batteries. However, the metastable nature and performance of remain mysterious. Herein, modified compositions 70Li2S–30P2S5 were prepared via two-step mechanical milling thermal annealing. synthesized using conventional method (mechanical annealing) again ball-milled to obtain amorphous a peculiar structure. Further...
Managing safety and supply-chain risks associated with lithium-ion batteries (LIBs) is an urgent task for sustainable development. Aqueous proton are attractive alternatives to LIBs because using water protons addresses these two risks. However, most host materials undergo large volume changes upon H