A5036535606- Mesoporous Materials and Catalysis
- Polyoxometalates: Synthesis and Applications
- Catalytic Processes in Materials Science
- Zeolite Catalysis and Synthesis
- Metal-Organic Frameworks: Synthesis and Applications
- Porphyrin and Phthalocyanine Chemistry
- Silicone and Siloxane Chemistry
- Covalent Organic Framework Applications
- Synthesis and properties of polymers
- Polymer Nanocomposites and Properties
- Chemical Synthesis and Reactions
- Catalysis and Oxidation Reactions
- Luminescence and Fluorescent Materials
- Oxidative Organic Chemistry Reactions
- Advanced Photocatalysis Techniques
- Chemical Synthesis and Characterization
- Analytical Chemistry and Sensors
- Quantum, superfluid, helium dynamics
- Electrocatalysts for Energy Conversion
- Layered Double Hydroxides Synthesis and Applications
- Analytical Chemistry and Chromatography
- Polymer composites and self-healing
- Physics of Superconductivity and Magnetism
- Aerogels and thermal insulation
- Epoxy Resin Curing Processes
Toyota Central Research and Development Laboratories (Japan)
2014-2023
National Institute of Advanced Industrial Science and Technology
2019-2023
Higashi Osaka City General Hospital
2021
Toyota Motor Corporation (Switzerland)
2003-2019
Japan Science and Technology Agency
2007-2017
Ritsumeikan University
2017
Tianjin University
2016
Aichi Institute of Technology
1974-2015
Nagoya University
1997-2015
Niigata Prefectural Niigata Minami High School
2015
Novel organic−inorganic hybrid mesoporous materials have been synthesized, in which organic and inorganic oxide moieties are distributed homogeneously at the molecular level framework, forming a covalently bonded network. They highly ordered mesoscale, with two- three-dimensional hexagonal symmetries well-defined external morphologies. Nitrogen adsorption measurements show uniform pore-size distribution pore diameters of 31 27 Å, high surface areas 750 1170 m2/g. The synthetic procedure to...
The ion exchange reaction of interlayer Na+ ions a layered polysilicate kanemite with alkyltrimetnylammonium ions, followed by calcination, gives highly ordered mesoporous materials hexagonal array uniform channels.
An enzyme, horseradish peroxidase (HRP), was adsorbed in the manner of single immersion method on silica mesoporous materials FSM-16, MCM-41, and SBA-15 with various pore diameters from 27 to 92 Å, their enzymatic activities an organic solvent thermal stabilities were studied. FSM-16 MCM-41 showed a larger amount adsorption HRP than or gel when sizes 50 Å. The increased enzyme capacity may be due surface characteristics which would consistent observed cationic pigment compared anionic for...
Abstract The synthetic conditions of highly ordered and thermally stable mesoporous molecular sieves from a layered silicate kanemite are established. We divided the formation process materials into two elemental processes: i) exchange Na+ in interlayer for alkyltrimethylammonium cations ii) condensation silicates three dimensional framework. Higher pH (over 11.5) at cation-exchange subsequent adjustment 8.5 were best suited products with high regularity thermal stability. Removal partially...
This review focuses on the self-organization of organic–inorganic hybrid materials with molecular-scale and mesoscale periodicities. It describes organosilicas molecular periodicity organic units formed by bissilylated monomers without employing templates, as well porous periodicity, i.e., periodic mesoporous (PMOs). Moreover, PMOs in framework are discussed. Relevant uses diverse applications summarized final chapter.
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTCubic Hybrid Organic−Inorganic Mesoporous Crystal with a Decaoctahedral ShapeShiyou Guan, Shinji Inagaki, Tetsu Ohsuna, and Osamu TerasakiView Author Information Toyota Central R&D Laboratories, Inc. Nagakute, Aichi 480-1192, Japan The Institute for Materials Research Tohoku University, Sendai 980-8577, Department of Physics, Graduate School Science CREST, JST, 980-8578, Cite this: J. Am. Chem. Soc. 2000, 122, 23, 5660–5661Publication Date...
A synthesis of ordered biphenylene-bridged mesoporous material with a crystal-like periodic pore wall structure is reported.
Novel sulfuric acid-functionalized mesoporous benzene-silicas with a molecular-scale periodicity in the walls were derived from benzene-silica possessing mercaptopropyl groups by oxidative transformation of -SH into -SO3H.
Novel open framework molecular sieves, titanium(IV) phosphates named, i.e., TCM-7 and -8 (Toyota Composite Materials, numbers 7 8), with new mesoporous cationic topologies obtained by using both anionic surfactants are reported. The (31)P MAS NMR, UV-visible absorption, XANES data suggest the tetrahedral state of P Ti, stabilization Ti in TCM-7/8 is due to incorporation phosphorus (at Ti/P = 1:1) vis-à-vis most stable octahedral pure TiO(2). Mesoporous show anion exchange capacity...
Light aqueduct: Periodic mesoporous organosilica exhibits strong light absorption due to densely packed organic chromophores within the pore walls. energy absorbed by 125 biphenyl groups in walls is funneled into a single coumarin 1 molecule mesochannels with almost 100% quantum efficiency, and results significant enhancement of emission from dye.
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTNovel Templating Synthesis of Necklace-Shaped Mono- and Bimetallic Nanowires in Hybrid Organic−Inorganic Mesoporous MaterialAtsushi Fukuoka, Yuzuru Sakamoto, Shiyou Guan, Shinji Inagaki, Noriaki Sugimoto, Yoshiaki Fukushima, Kaori Hirahara, Sumio Iijima, Masaru IchikawaView Author Information Catalysis Research Center, Hokkaido University Sapporo 060-0811, Japan Toyota Central R&D Laboratories, Inc. Nagakute, Aichi 480-1192, Science...
Periodic mesoporous benzene-silicas with large pores of 6.0 to 7.4 nm in diameter are synthesized using triblock copolymer as a template. These materials have well-defined hexagonal rod morphology and high thermal stability up 823 K air.
Synthesis of a solid chelating ligand for the formation efficient heterogeneous catalysts is highly desired in fields organic transformation and solar energy conversion. Here, we report surfactant-directed self-assembly novel periodic mesoporous organosilica (PMO) containing 2,2'-bipyridine (bpy) ligands within framework (BPy-PMO) from newly synthesized organosilane precursor [(i-PrO)3Si-C10H6N2-Si(Oi-Pr)3] without addition any other silane precursors. BPy-PMO had unique pore-wall structure...
Isothermally rewritable fluorescence mechanochromism has been realized for a perylene bisimide dye with bulky and flexible substituents. Fluorescent patterns drawn by mechanical stimuli can be erased thermal stimuli, treatment solvent vapors, or spontaneous structural transition from orange-fluorescent to green-fluorescent states. The isothermal switching of solid films is applicable displays sensory materials.
One-pot bottom-up synthesis involving extended aromatic electrophilic substitution on to a pyrrole has been employed for the design of novel triazine-functionalized porphyrin-based porous organic polymer, TPOP-1. Hydrothermal treatment 4,4′,4′′-(1,3,5-triazine-2,4,6-triyl)tris(oxy)tribenzaldehyde and in glacial acetic acid presence FeCl3 leads formation TPOP-1, which is highly robust material, exhibits high surface area bimodal pore sizes ranging from large micropores mesopores. The...
This paper describes a new conceptual design for enhancement of photocatalytic CO(2) reduction rhenium(I) complex by light harvesting periodic mesoporous organosilica (PMO). Mesoporous biphenyl-silica (Bp-PMO) anchoring fac-[Re(I)(bpy)(CO)(3)(PPh(3))](+)(OTf)(-) (bpy =2,2'-bipyridine; OTf = CF(3)SO(3)) in the mesochannels was synthesized co-condensation two organosilane precursors, 4,4'-bis(triethoxysilyl)biphenyl and 4-[4-{3-(trimethoxysilyl)propylsulfanyl}butyl]-4'-methyl-2,2'-bipyridine...
Porous PCTF-8 has a fluorescence quantum yield of 31% which is quenched by trinitrophenol, and Pt@PCTF-8 yields H<sub>2</sub> with visible light.
Heterogenization of metal-complex catalysts for water oxidation without loss their catalytic activity is important the development devices simulating photosynthesis. In this study, efficient heterogeneous iridium complexes were prepared using bipyridine-bridged periodic mesoporous organosilica (BPy-PMO) as a solid chelating ligand. The BPy-PMO-based (Ir-BPy-PMO) by postsynthetic metalation BPy-PMO and characterized through physicochemical analyses. Ir-BPy-PMOs showed high oxidation. turnover...
Microporosity within the pore walls of ordered mesoporous silica SBA-15 was confirmed by physisorption; micropore volume could be systematically controlled varying synthesis temperature and TEOS/surfactant ratio.