Yoshihiro Koide

Yoshihiro Koide
Kanagawa University · Department of Applied Chemistry

About

43
Publications
3,079
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,623
Citations
Citations since 2016
0 Research Items
400 Citations
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080

Publications

Publications (43)
Article
Full-text available
We report a mixed-valence cobalt(II/III)–octacyanidotungstate(IV/V) magnet, [CoII(H2O)]2[CoIII{μ-(R)-1-(4-pyridyl)ethanol}2][WIV(CN)8][WV(CN)8]·5H2O. Synchrotron-radiation X-ray single crystal structural analysis, infrared spectrum, and density-functional theory (DFT) calculation indicate that this compound has a chiral structure with the P21 space...
Article
The 3rd harmonic generation in a Nd:YAG pulsed laser induces the high throughput [2 + 2] cycloaddition of 1,2-bis(4-pyridyl)ethylene that assemble itself tightly into a face-to-face manner around the Yb3+ octaaqua complex via hydrogen bonds, without damaging the cyclobutyl ring-containing products.
Article
The structure of the reactie cobalt complex catalyst for the enantioselective borohydride reduction of ketones was completely determined by ESI-MS, NMR, and X-ray analyses. It was confirmed that as an axial ligand, 1-chlorovinyl group derived from 1, 1, 1-trichloroethane was attached. Based on the X-ray analysis, two rotamers on cobaltcarbon bond w...
Article
Full-text available
An ozone-assisted photocatalytic water-purification unit using a TiO2 modified titanium-mesh sheet (TMiP) was investigated. Significant decomposition of biological and chemical contaminants has been achieved by highly active intermediates formed by catalyticdecomposition and photocatalysis.
Article
The unprecedented infinite stacks of trans-1,2-bis(4-pyridyl)ethylene (4,4′-bpe) were prepared with a supramolecular Yb III-aqua complex that exhibited the stereospecific photocycloaddition of olefins within a single-crystal-to-single-crystal process and was confirmed by crystallographic methods (see figure). The supramolecular assistance of Yb III...
Article
Full-text available
A novel photocatalytic filter, titanium-mesh sheet modified with TiO2 (TMiP), was fabricated and applied for environmental purification. The high flexibility of TMiP allows for an easy to design and fabricate photocatalytic reactor. Moreover, TMiP provides an excellent air or water pass-through while maintaining a high level of surface contact with...
Article
Decomposition of environmentally persistent perfluorooctanoic acid (PFOA) in aqueous suspensions of a TiO2 photocatalyst, with use of medium-pressure ultraviolet (MPUV) lamp irradiation alone, was examined under atmospheric pressure. Compared to direct photolysis, TiO2 photocatalysis led to efficient PFOA decomposition and production of CO2 and F–....
Article
The efficient decomposition of environmentally persistent perfluorooctanoic acid (PFOA) was achieved by a hybrid of electrolysis and photocatalysis. The rate constant of PFOA decomposition in the hybrid system was larger than the sum of the constants in electrolysis-only and photocatalysis-only systems. The hybrid system was able to accelerate the...
Article
The electrochemical decomposition of environmentally persistent perfluorooctanoic acid (PFOA) was achieved by the use of a boron-doped diamond (BDD) electrode. The PFOA decomposition follows pseudo-first-order kinetics, with an observed rate constant (k1) of 2.4×10−2dm3h−1. Under the present reaction conditions, k1 increased with increasing current...
Article
Full-text available
Two dimensional island arrays and honeycomb patterns consisting of ZnO nanocrystal clusters were fabricated on predefined TiO(2) seed patterns prepared by vacuum free, aerosol assisted wet-chemical synthesis. The TiO(2) seed patterns were prepared by applying an aerosol of a water soluble titanium complex on hexagonally close-packed polystyrene bea...
Article
The capabilities of TiO2-coated materials for the inactivation and removal of algae were investigated. As supports for TiO2, non-woven fabric and Ni foam were chosen. To evaluate the ability of noble metal cocatalyst additions to facilitate the photocatalytic algal inhibition of TiO2-coated materials, Pd nanoparticles were deposited on non-woven fa...
Article
Solvent-mediated structural transformation of {[Cu(4,4′-bpy)2(OTf)2]·2CH3CN}n coordination polymer (CP) was crystallographically characterized and confirmed the formation of infinite linear water networks that bind metal centers through the interplay of coordination and hydrogen bonding of water molecules.
Article
Electrospun Al2O3-TiO2 composite fibers were fabricated and characterized. Morphologies of the fibers after calcination at 500, 1000 and 1150 degrees C, respectively, were examined by SEM, which showed that the diameters of the fibers decreased with increasing calcination temperature. XRD and TGA/DTA revealed that the Al2O3-TiO2 fibers consisted of...
Article
A renewable superhydrophobic-superhydrophilic pattern with a minimum dimension of 50 microm is prepared from octadecyltrimethoxysilane self-assembled monolayer-covered superhydrophobic Al2O3 overlayers on a superhydrophilic TiO2 surface via self-assembly and calcination of boehmite (AlOOH.nH2O) particles. The resulting Al2O3 layer plays dual roles...
Article
A periodic array of NaCl nanocrystals is prepared using a nanoreactor array, which consists of hemispherical nanowells of 800 nm in diameter fused side-by-side prepared by sputter deposition of Fe and Au layers over hexagonally close-packed 1-μm polystyrene (PS) beads. The size of the nanocrystals can be controlled simply by changing the concentrat...
Article
A thin metallic bilayer consists of fused hollow hemispheres of 930nm in diameter is fabricated by sputter deposition of Ti and Fe at 50 and 5nm of thickness, respectively, onto an array of spherical polystyrene colloidal particles. The fused metal hemispheres are utilized to assemble polystyrene colloidal particles of smaller diameters (800nm) int...
Article
An aluminum oxide coating film is prepared for the first time by a solid-state conversion of boehmite (AlOOH center dot n H2O) particles, which are covalently attached on self-assembled monolayers (SAMs) of 11-mercaptoundecanoic acid (MUA) built on Au layer. The particles held on MUA SAMs are subject to sintering at elevated temperatures to fuse in...
Article
The reaction of boehmite ([AlO(OH)](n)) and 5,8-dihydroxy-1,4-naphthoquinone (DHNQ) in refluxing water led to spontaneous assembly of a mixture of coordination complexes, in which extended network of deprotonated DHNQ (DONQ(2-)) is bridging between two Al3+ ions in the bis-O, O'-bidentate fashion. UV-vis spectroscopy, C-13 solid-state NMR, and size...
Article
Treatment of AIO(OH) with 3 equiv of 8-hydroxyquinolinol in refluxing deionized water provided the meridional and facial isomers of tris(8-hydroxyquinolinate) aluminum (Alq(3)) with good yields as solid deposits after 1 and 90 h, respectively. X-ray diffraction and solid-state C-13 NMR studies revealed that mer-Alq(3) is formed in the early stage o...
Article
Aluminum acetylacetonate, Al(acac)(3), was prepared in the reaction between the mineral boehmite, [AlO(OH)](n), and acetylacetone (2,4-pentanedione; Hacac) in water. In this one-step synthesis, the pale yellow crystalline product precipitated out of the solution. Characterization of the recrystallized crystal by mass spectrometry, thermogravimetric...
Article
A soft lithographic microcontact printing (μCP) procedure is successfully applied for the first time to form densely packed organosilane self-assembled monolayers (SAMs) on the surface of ITO (Sn-doped In2O3) coated glass via a thermally activated deposition process. Hot microcontact printing (HμCP) enables localized transfer with 1.0−40 μm feature...
Article
Ein Wechsel von p- zu n-Halbleitereigenschaften, durch Substituenten hervorgerufen, wurde beim Perfluorhexyl-funktionalisierten Sexithiophen 1 festgestellt. Dieses ist thermisch stabiler und flüchtiger und hat eine höhere Elektronenaffinität als die nicht fluorierten Verbindungen 2 und 3. Aufgedampfte Filme von 1 verhalten sich wie n-Halbleiter und...
Article
Chemically functionalized alumina nanoparticles (carboxylate-alumoxanes) are used as the inorganic component of a new class of inorganic−organic hybrid materials. Lysine- or p-hydroxybenzoic acid-derivatized alumoxanes are readily prepared from the reaction of boehmite, [Al(O)(OH)]n, with the appropriate carboxylic acid. The peripheral organic hydr...
Article
The paramagnetic dinuclear Ru2+Ru3+ complex, {RuCl[P(OMe)3]2}2(μ-S2)(μ-Cl)(μ-N2H4) (1), reduces dioxygen by one-electron at room temperature in CH3CN to form 1+O2-, in which O2- is coordinated to the μ-S2 ligand. The dioxygen reduction is preceded by protonation to yield HO2+ by the bridging hydrazine ligand. Complex 1 is electrochemically more neg...
Article
Reduction of [RuIIICl(P(OMe)3)2]2(μ-Cl)2(μ-S2) (1) in THF leads to complete removal of the μ-Cl groups to form the tetranuclear complex, [RuIICl(μ-Cl)(P(OMe)3)2(μ,η1,η2-S2)Ru(P(OMe)3)(μ-P(OMe)3-P,O)]2 (6). The structure of complex 6 consists of a pair of trans-RuIISSRuII cores. 31P{1H}NMR studies elucidate that a monomeric trans-RuIISSRuII complex...
Article
The molecular structure of PhOCH2CH(OH)CH2OPh has been determined. The C—O—C—C—C—O—C backbone adopts an anti-anti-anti-anti conformation. Inter-molecular O—H ··· O hydrogen-bonding results in dimeric units which stack into zig-zag tapes. Crystal data: orthorhombic, Pbca, a = 10.383(1), b = 8.0532(0), c = 31.295(3) Å, V = 2616.8(3) Å3, and Z = 8.
Data
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and...
Article
The dinuclear ruthenium polysulfide complex, [RuII2(μ-Sn)(μ-S2CNMe2)(S2CNMe2)(CO)2(PPh3)2] (1)·0.5CH2Cl2 (n = 5 or 6), was reacted with N-donor ligands, hydrazine, ammonia, and pyridine. The reaction of hydrazine with 1.2 equiv of 1·0.5CH2Cl2 affords the crystallographically characterized dinuclear RuII complex, {[RuII(S2CNMe2)(CO)(PPh3)]2(μ-S4)(μ-...
Article
Reaction of with the 1,3-diphenylamidine [PhN(H)C(H)NPh, H-dpam] yields monomeric (1). The partial hydrolysis of 1 results in the isolation of (2), whose structure consists of a gallium dimer in which the amidine and hydroxide ligands bridge two moieties. Reaction of [Me2Ga(μ-Cl)]2 with H-dpam results in the complex [H2-dpam] [Me2GaCl2] (3). The s...
Article
The triiron clusters Fe3(CO)9(μ3-EMLn)2 (1-E, MLn = MnCp(CO)2, E = P, As, Sb; 2-E, MLn = Cr(CO)5, E = P, As, Sb) can be considered cluster analogues of organopnictane (ER3) ligands, in which the triply bridging E ligands are coordinated to 16-electron capping metal groups, MLn. Structural parameters, infrared CO stretching frequencies, and reductio...
Article
The reaction of Al(tBu)3 with carboxylic acids, RCO2H, yields the dimeric di-tert-butylaluminum carboxylates [(tBu)2Al(μ-O2CR)]2, where R = tBu (1), CCl3 (2), Ph (3), CH2Ph (4), CHPh2 (5), CPh3 (6), C(H)=C(H)Ph (7), CH2OCH3 (8), CH2OCH2CH2OCH3 (9), and CH2(OCH2CH2)2OCH3 (10), which have been characterized by 1H and 13C NMR and IR spectroscopy and m...
Article
The reaction of primary and secondary amines with the hexameric tert-butylalumoxane, [(tBu)Al(μ3-O)]6, has been investigated. Reaction of [(tBu)Al(μ3-O)]6 with 2 equiv of RNH2 (R = Et, nPr, iPr, nBu, tBu) results in the formation of [(tBu)6Al6(μ3-O)4(μ-O)2(NH2R)2], R = Et (1), nPr (2), iPr (3), nBu (4) and tBu (5). The molecular structure of compou...
Article
The crystal and molecular structure of [(tBu)2Al(μ-NHtBu)]2 has been determined. The unit cell contains two independent molecules with only slight variation in the orientation of thetert-butyl ligands. Crystal data: Triclinic, $P\bar 1$ ,a=9.0138(6),b=10.2944(8),c=15.791(1) Å, α=91.262(6), β=89.822(6), γ=106.141(6)°,V=1407.2(2) Å3,Z=2,R=0.039,R w...
Article
The palladium-catalyzed copolymerization of carbon monoxide and ethylene to give polyketone polymers, [CH2CH2C(O)]n, has been accomplished by the use of either (dppp)Pd(OAc)2 or (dppp)Pd[C(O)tBu]Cl in the presence of a tert-butyl alumoxane, [(tBu)Al(μ3-O)]n (n = 6, 7, 9) or [(tBu)7Al5(μ3-O)3(μ-OH)2] cocatalyst. The effects on the catalytic activity...
Article
The palladium-catalyzed copolymerization of carbon monoxide and ethylene to give polyketone polymers, [−CH2CH2C(O)−]n, has been accomplished by the use of either (dppp)Pd(OAc)2 or (dppp)Pd[C(O)tBu]Cl in the presence of the tert-butyl alumoxane [(tBu)AlO]6 as a cocatalyst. The polymers were characterized by X-ray diffraction (XRD), scanning electron...
Article
The crystal and molecular structure of [(tBu)2Al(µ-NHtBu)]2 has been determined. The unit cell contains two independent molecules with only slight variation in the orientation of thetert-butyl ligands. Crystal data: Triclinic, ,a=9.0138(6),b=10.2944(8),c=15.791(1) Å, a=91.262(6), ß=89.822(6), ?=106.141(6)°,V=1407.2(2) Å3,Z=2,R=0.039,Rw=0.041.
Article
Reaction of [(tBu)Al(μ3-O)]6 with benzole acid affords the structurally characterized pentaaluminum compound [Al5(tBu)5(μ3-O) 2(μ3-OH)2(μ-OH)2(μ-O 2CPh)2], in which the aluminums are five-coordinate and the benzoate ligands act as handles to the "basket" structure derived from the structure of [Al6(tBu)6(μ3-O) 4(μ3-OH)4]. The binding interaction be...
Article
The radical [Fe3(CO)9(mu3-PMn(CO)2CP)2].- (1.-) is implicated as the active species in the electron-transfer-chain (ETC) catalytic ligand substitution of the Fe-bound carbonyl ligands in Fe3(CO)9(mu3-PMn(CO)2CP)2(1). 1.- is the 1-e- reduced intermediate relating the closed cluster 1 (with three Fe-Fe bonds) and the open cluster 1(2-) (with two Fe-F...
Article
A quasi-reversible single two-electron process observed by cyclic voltammetry is accompanied by localized Fe-Fe bond cleavage and bond formation in the bicapped triiron clusters open-Fe3(CO)9[mu-3-PFe(CO)2Cp]2 (1) and closed-Fe3(CO)9[mu-3-PMn(CO)2Cp]2 (2). For the case of 2, the two-electron reduction reaction to 2(2-) was characterized by an X-ray...
Article
For visible-light-induced water reduction to hydrogen with use of a sacrificial electron donor (triethanolamine), an efficient and durable photocatalyst system with xanthene dye sensitization of particulate platinized semiconductor catalyst is presented. A reductive electron-transfer mechanism from the photoreduced dye to the particulate platinized...
Article
Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 1993. On t.p., mu is the Greek letter, minus is subscript. Includes bibliographical references.

Network

Cited By