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。
Abstract An extensive research programme was launched with the aim at evaluating the potential of seven different polyamino carboxylic acids (PACAs) using both technical and economic aspects. Dissolving capacity of each compounds was determined under equilibrium conditions as a function of concentration for barite and…
The synthesis and structures of indium complexes incorporating the bidentate monoanionic ligand N, N ‘ -diisopropylaminotroponiminate ( i Pr 2 -ATI) are described. The reaction of InCl 3 with Li[ i Pr 2 -ATI] yields ( i Pr 2 -ATI)InCl 2 ( 3 ), which is converted to ( i Pr 2 -ATI)InMe 2 ( 4 ) by reaction with MeLi; 4 i…
Amorphous <TEX>$Ga_2O_3$</TEX> films have been grown on Si(100) substrates by metal organic chemical vapor deposition (MOCVD) using gallium isopropoxide, <TEX>$Ga(O^iPr)_3$</TEX>, as single precursor. Deposition was carried out in the substrate temperature range 400-800 <TEX>$^{\circ}C$</TEX>. X-ray photoelectron spec…
The first heteropoly acid–dipeptide complex, (HGly-Gly)3PMo12O40·4H2O, was synthesized and characterized by elemental analysis, IR, UV, 1H NMR and single crystal X-ray diffraction. The X-ray crystallographic study showed that the crystal structure was constructed from N–H⋯O and O–H⋯O hydrogen bonds among the (HGly-Gly…
The tetranuclear complexes [Fe(4)(pypentO)(pym)(3)(Oac)(NCS)(3)] x 1.5EtOH (1), [Fe(4)(pypentO)(pym)(Oac)(2)(NCS)(2)(MeO)(2)(H(2)O)] x H(2)O (2), [Fe(2)(pypentO)(NCO)(3)](2) (3), and [Fe(2)(pypentO)(N(3))(3)](2) (4) have been prepared, and their structure and magnetic properties have been studied (pypentOH = 1,5-bis[(…
The new materials CsPbBi(3)Te(6) and CsPb(2)Bi(3)Te(7) were discovered through reactions of CsBi(4)Te(6) with PbTe, whereas the isostructural materials CsSnBi(3)Te(6) and CsSn(2)Bi(3)Te(7) were discovered through corresponding reactions with SnTe. The compounds can also be prepared from stoichiometric mixtures of Cs(2…
A consistent and reproducible one-step method for the preparation of Pd nanoparticles of mean sizes varying from 1.5 to 15 nm with relative standard deviation of <0.5 is reported. We have shown that the particle size can be controlled by changing the concentrations of the stabilizing polymer (PVP) and precursor salt,…
Thin films of amorphous Se 90- x Sb 10 In x and GeSe have been prepared by electron beam evaporation technique. The effect of irradiation of GeSe and Se 90- x Sb 10 In x ( x = 0, 5, 10, 15) thin films on the optical energy gap and dc activation energy has been investigated for different doses of 12 C 5+ and 107 Ag 14+…
The dramatic increases in ionic conductivity in ${\mathrm{Gd}}_{2}({\mathrm{Ti}}_{1\ensuremath{-}x}{\mathrm{Zr}}_{x}{)}_{2}{\mathrm{O}}_{7}$ solid solution are related to disordering on the cation and anion lattices. Disordering in ${\mathrm{Gd}}_{2}({\mathrm{Ti}}_{1\ensuremath{-}x}{\mathrm{Zr}}_{x}{)}_{2}{\mathrm{O}}…
Our objective was to strengthen and stabilize collagen films without the introduction of cytotoxic chemical crosslinkers. We hypothesized that collagen could be rapidly crosslinked with glucose with ultraviolet (UV) irradiation as a catalyst. In theory, UV-generated free radicals can expedite collagen crosslinking wit…
TiO 2 thin films were grown on several kinds of SAMs (self-assembled monolayers) using TC (titanium tetrachloride), TDD (titanium dichloride diethoxide), or TE (titanium tetraethoxide) as a starting material. We discussed the thin film formation mechanism and improvement of feature edge acuity through controlling the…
The synthesis, structure, and photochemical behavior of the trans isomers of 4-(N-phenylamino)stilbene (1c), 4-(N-methyl-N-phenylamino)stilbene (1d), 4-(N,N-diphenylamino)stilbene (1e), and 4-(N-(2,6-dimethylphenyl)amino)stilbene (1f) are reported and compared to that of 4-aminostilbene (1a) and 4-N,N-dimethylaminosti…
Spray pyrolysis was used to prepare polycrystalline thin films of undoped Ga 2 O 3 , as well as those doped separately with Eu 3+ , Tb 3+ and Tm 3+ . The energy gap values of the as-grown films and those annealed at 600\r{}C and 900\r{}C were found to be 4.75, 4.48 and 4.44 eV, respectively. Films containing Eu 3+ and…
The structural stability and electronic structure of face-centered-cubic Ti, Zr, and Hf were studied by means of first-principles full-potential calculations. The total-energy calculations demonstrate that Ti, Zr, and Hf have a locally stable fcc structure, i.e., the elastic stability criteria for a cubic crystal are…
We consider the question of whether a two-dimensional hard-disc fluid has a first-order transition from the liquid state to the solid state as in the three-dimensional melting-crystallization transition or whether one has two subsequent continuous transitions, from the liquid to the hexatic phase and then to the solid…
Thick (~50 nm) films of Hf were evaporated onto bare and oxidized Si(001) samples, and thin (~monolayer) films of Hf were evaporated onto clean Si(001)-(2x1) surfaces. Upon annealing to 1000$^/circ$C, films of HfSi2 were formed after reaction times that depended upon the surface condition of the substrate before depos…
Field emission (FE) electron spectroscopy from an individual multiwalled carbon nanotube (MWNT) is used to measure quantitatively stable temperatures at the apex, T(A), of up to 2000 K induced by FE currents approximately 1 microA. The high T(A) is due to Joule heating along the length of the MWNT. These measurements…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…
Periodic density functional calculations on three sodalites [Cd 4 S(AlO 2 ) 6, Zn 4 O(BO 2 ) 6, and Zn 4 S(BO 2 ) 6 ] were performed. Lowest-energy allowed electronic transitions were always found to be localized on the M 4 X (M = Cd, Zn; X = O, S) clusters encapsulated into lattice cages. Predicted excitation energie…
Laser action in a dye-doped ferroelectric liquid crystal (FLC)—at the edge of the photonic stop band—has been demonstrated for the first time. The FLC used is a multicomponent mixture with a well-controlled short pitch of its helical structure whose periodic is equivalent to visible optical wavelengths. The laser emis…