Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
In Part I (1), the concept of “Type I” antiseizure behavior for chlorinated hydrocarbons in extreme-pressure (EP) lubrication of ferrous metals was introduced; interfacial temperature measurements and surface analyses revealed that a solid lubricating layer consisting of ferrous chloride (FeCl2) and carbon prevents se…
A hybrid between the Prussian Blue and Creutz–Taube mixed valent species is presented in the form of the bmtz-bridged bis[tetracyanoiron(+2.5)] complex 13– [bmtz = 3,6-bis(2-pyrimidyl)-1,2,4,5-tetrazine] which exhibits a very large comproportionation constant of 1014 and a delocalised structure, according to UV–VIS–NI…
Using stepwise cyclization reactions followed by an intramolecular coupling, the criss-cross overlapped tetrathiafulvalenophane 8 was readily prepared. The structure of the cis,cis isomer was elucidated by X-ray crystallography which revealed a host–guest complex with chloroform. This electron donor was used for the s…
A synthesis has been developed for both calamitic and discotic mesogens based on the bis(phenylenedithio-TTF) (BPhDT-TTF) nucleus.
Copper(II) acetate dimer and [MnII(bipy)2]2+ encapsulated in cubic Al-MCM-48 show high catalytic activity in the oxidation of phenol to catechol by oxygen activation, and of styrene to styrene oxide by singlet oxygen, respectively.
Formazan and 3-nitroformazan have been investigated at abinitio level (MP2/6-31G** and B3LYP/6-31G**) in all their possible conformations, for studying the various possibilities of intramolecular hydrogen bonding formation. The trans-syn-s-cis (TSSC), known also as yellowform, has been found to be the most stable conf…
A new analysis of conduction current distributed in dielectrics based on simultaneous measurements of thermally stimulated current (TSC) and time dependent space charge distribution is proposed. A new system pulsed electro-acoustic (PEA) method has been developed to enable simultaneous measurement of the TSC and the d…
The crystallization behavior of hexanitrohexaazaisowurtzitane (HNIW) has been investigated at 298 K. Only the β form crystallized at the initial stage of crystallization, and it converted to the ε form with a solution-mediated transformation mechanism. Through the measurement of the solubilities of each polymorph (β a…
In order to apply a seeding method to the removal of silica from geothermal brines, the effects of temperature, initial seed concentration and initial silica concentration on the silica removal were experimentally examined. When silica gel seeds are added to a supersaturated silica solution, amorphous silica is precip…
A series of monodomain liquid crystalline (LC) elastomers based on a polysiloxane were synthesised. These elastomers were prepared either with one or two cross-linking agents in the presence of a mechanical field. By using the real-time X-ray facility at the University of Reading (AXIS), we have shown that the nematic…
Reactions of 2-nitro-5,10,15,20-tetraphenylporphyrin with alkyl α-isocyanoacetates afford naphthochlorins (in addition to the expected pyrroloporphyrins) which undergo free radical dimerization; the X-ray structure of one such naphthochlorin dimer is reported.
The 29Si and 31P nuclear magnetic resonance (NMR) chemical shifts and the Qn distribution in ternary sodium phosphosilicate glasses were examined. In the NaPO3-SiO2 glasses, only the Si(Q4) unit from SiO2 and the P(Q2) unit from NaPO3 are observed. When the P2O5 content increases at fixed mole fractions of SiO2 equal…
組織再建術におけるスキャホールドの特性としては, 細胞との良好な付着, 増殖, さらには分化誘導などが要求される. 本研究では, スキャホールドとして最も多く研究されているポリ-L-乳酸 (PLLA) の表面改質を目的として, PLLA表面へのゼラチンの固定化法について検討した. ラジカル開始剤を用いたPLLA-ゼラチン結合反応では十分な固定化量が得られなかったが, アルカリ条件下におけるPLLA-ゼラチン直接固定化法では2μg/cm2のゼラチンの化学的固定化が達成された. 得られたゼラチン固定化PLLAフィルム上において3T3細胞の良好な初期接着が観察され, この直接固定化法がポリ乳酸のバルク特性を変化させることなく, また,…
Syntheses of face-to-face bis(corroles) exhibiting electronic interactions between the two chromophores.
In the context of polymer electronic devices, it is of critical importance to understand the nature of the polymer surfaces and the polymer-electrode interfaces. It has been shown that for conjugated polymers, photoelectron spectroscopy, especially in connection with quantum chemical modeling, provides a maximum amoun…
Magnetic susceptibilities of 8 kinds of 3-(4-R-phenyl)-1,5-diphenyl-6-oxo- and -thioxoverdazyl radical crystals ( p -MDpOV (R = OCH 3 ), p -MeDpOV (R = CH 3 ), p -CyDpOV (R = CN), p -NDpOV (R = NO 2 ), p -MDpTV (R = OCH 3 ), p -MeDpTV (R = CH 3 ), p -CyDpTV (R = CN), and p -NDpTV (R = NO 2 )) were measured between 4.2…
A combined theoretical ab initio and structural database study is presented of the different interactions that allow two-coordinate copper(I) molecules to associate, from weak interactions to chemical bonds, giving rise to different structures.
The pressure dependence of the order-to-disorder transition in a polystyrene/polyisoprene (PS/PI) ( M = 17 000) and a polystyrene/poly(methylphenylsiloxane) (PS/PMPS) ( M = 29 600) diblock copolymer of symmetric composition has been studied using small-angle X-ray scattering. The order−disorder transition is investiga…
The sedimentation of spheres in a Newtonian fluid is experimentally studied under creeping flow conditions. The mean particle settling velocity and the particle velocity fluctuations are measured across the width of the sedimentation cell. We show that there can be a global intrinsic convection of the suspension super…
The iron(II) complexes of two new macrocyclic ligands: [24]RBPyBC (L24), a 24-membered macrocycle containing phenol, pyridine and amino donor groups, and [30]RBBPyBC (L30), a 30-membered macrocycle containing phenol, bipyridine, and amino donor groups, were found to be effective for the hydroxylation of alkanes, inclu…