Materials Literature
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A novel beta-ketoimine, 4-N-(n-butylamino)-3-penten-2-one (1), and beta-enaminoester, Ethyl 3-N-(isopropylamino)-2-butenoate (2), were synthesized by the reaction of the 2,4-pentanedione or ethyl 3-oxo butanoate with the n-butyl and isopropyl amine, respectively. The isolated free ligands 1 and 2 were reacted with die…
The development and commercialization of nanoparticles such as nanoclays (NCs), carbon nanotubes (CNTs) and polyhedral oligomeric silsesquioxanes (POSS) offers new possibilities to tailor adhesives at the nanoscale. Four types of POSS, with reactive mono-functional groups of isocyanatopropyl, glycidoxypropyl, aminoeth…
Photochromic diarylethenes having furan units (1 and 3) were synthesized and their photochromic performances were compared with those having thiophene units. The cyclization quantum yields of both derivatives in hexane are similar. In contrast, the cycloreversion quantum yield of the derivative having furan units (1)…
Abstract The influence of polyelectrolytes with different architecture on spontaneous batch crystallization of calcium oxalate was investigated. A series of acidic acrylate block copolymers were been made, by radical polymerization, with defined molecular weight and structure. Radical polymerization of acrylic acid (A…
The atropisomeric compound (R)-2,2′,6,6′-tetramethyl-3,3′-dinitro-4,4′-bis[(4-nonyloxybenzoyl)oxy]biphenyl ((R)-1) was doped in the achiral liquid crystal hosts 2-(4-butoxyphenyl)-5-octyloxypyrimidine (2-PhP) and 4-(4′-heptyl[1,1′-biphen]-4-yl)-1-hexylcyclohexanecarbonitrile (NCB76), and electroclinic coefficients ec…
Here we show a novel chemical vapor synthesis technique, which uses high-pressure hydrogen and produces needle-shaped single crystalline made of metal hydride of MgH2. The principle of this method is based on the gas phase reaction of vaporized metal with high pressure hydrogen sublimating into solid metal hydride (Mg…
オーステナイト系ステンレス鋼の水素脆化感受性を高圧水素ガス環境および陰極チャージ下での低ひずみ速度引張試験 (SSRT, Slow Strain Rate Testing) により調査し, その試験結果をSSRTと同環境において鋼材中に吸蔵される表面水素濃度で整理した. 水素脆化感受性は高圧水素ガス環境および陰極チャージに関わらず, 表面水素濃度で整理できた. 限界表面水素濃度は304L鋼では10ppm以下, 316L鋼では約100ppmであった. 316Lの限界値は45MPaの高圧水素ガス環境で鋼材中に吸蔵される水素濃度よりも高く, この結果は高圧水素ガス環境において316Lが十分な耐水素脆性を有することを示すと考えられた.
Silicon carbide-based microporous ceramic membranes for hydrogen separation were prepared via pyrolysis of polycarbosilane as a polymeric precursor. To prepare membranes with excellent hydrogen separation performance, effects of hydrosililation cross linking, addition of thermally-labile polymer as well as pyrolysis c…
Pitting sites on an Al foil for electrolytic capacitors were controlled by printing a hole-array mask on the foil. This process included the formation of a thin rubber film on a hole-array stamp, and the transfer of this film onto Al by microcontact printing. A thin rubber film with a hole-array configuration on Al fu…
A supramolecular triad consisting of self-assembled imidazolyl-zinc-porphyrin dimer, ferrocene, and fullerene was successfully constructed, resulting in long-lived charge separated species after efficient photoinduced electron transfer and charge shift reactions.
Anode-supported solid oxide fuel cells were fabricated with (LSC-YSZ) composite cathodes by an infiltration method and evaluated at . Cells with optimized composite cathode layers exhibited power densities of at , peak power densities of , and area-specific resistances of at . The LSC-YSZ composite cathodes were fabri…
RFID tags using organic transistors are described: Two 8b tags carrying different codes, energized and read out at 13.56MHz, the defacto standard for item-level ID, have been tested and demonstrated to enable multiple-object identification for the first time; A 64b tag, the most complex organic transponder reported to…
Abstract Starting from enantiomerically pure 5,10,15,20‐tetrakis[(1 S ,4 R ,5 R ,8 S )‐1,2,3,4,5,6,7,8‐octahydro‐1,4 : 5,8‐dimethanoanthracene‐9‐yl]porphyrin, treatment with CrCl 2 and subsequent air oxidation afforded the corresponding Cr(III) complex, with chloride as counterion, in 96% yield. Anion exchange with Ag…
This paper presents an effective medium approach to calculate the attenuation and phase constants of modes in a 3D connected wire medium both below and above the plasma frequency. Physical and nonphysical modes in the structure are identified for all the important lattice directions. According to this, the medium beha…
Deposition of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 (LSCF) oxide films on Gd-doped ceria (CGO) substrates by an electrostatic-assisted ultrasonic spray pyrolysis (EAUSP) method was demonstrated for the first time in this work. The electrostatic field employed for directing the aerosol stream toward the substrate was shown t…
In this investigation, a decision-making IIT approach for materials selection has been proposed. This approach consists of three phases which are the preselection, selection, and postselection and techno-economic phases. This approach differs from other approaches in taking into consideration the economic and business…
The effects of surface treatment of paper sludge (PS) with acrylic acid (esterification) and acetic acid (acetylation) on torque, stabilization torque, mechanical properties, water absorption, morphology, and thermal properties of PP/EPDM/PS composites were studied. It was found that esterified and acetylated composit…
A series of liquid crystalline mixtures that exhibit remarkably stable 4-layer intermediate phases, with phase ranges of around 30 °C, are reported. The mixtures are formed from a selenium-containing antiferroelectric material combined with up to 9% (by weight) of a highly chiral dopant. Various experimental methods i…
Polyaniline was synthesized chemically, coated on sawdust via cast method in the form of emeraldine base (EB) from formic acid as solvent, and used as an adsorbent for removal of lead ion or from aqueous solution. The effects of some important chemical and physical factors in removal efficiency have also been investig…
A simple model has been developed (within the framework of the point defect model, PDM) assuming that the impedance response of passivated metals is dominated by the barrier layer, which consists of a partly hydrated and highly defective oxide layer. Simulations were carried out for cation vacancy conducting barrier l…