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。
Spirocyclic tin dialkoxides are unique initiators for the ring-expansion polymerization of lactones leading to complex, but well-defined macromolecular architectures. In a first example, epsilon-caprolactone (epsilon CL) was polymerized, followed by the resumption of polymerization of a mixture of epsilon CL and epsil…
In this letter, we report that single-walled carbon nanotubes (SWNTs) can be dissolved in organic solvents through the formation of admixtures with barbituric acid.triaminopyrimidine (BA.TP) complexes using mechanochemical high-speed vibration milling (HSVM) and sonication methods. In contrast, neither BA nor TP alone…
The formation of defect hydrides containing a large number of M-atom vacancies (superabundant vacancies; SAVs) was studied in bcc NbHx and in the fcc phase of FeHx, CoHx, NiHx and PdHx, by resistivity and XRD measurements under different conditions of hydrogen pressure and temperature, with/without allowing for exchan…
Abstract Raman spectroscopy at both 298 and 77 K has been used to study a series of selected natural smithsonites from different origins. An intense sharp band at 1092 cm −1 is assigned to the CO 3 2− symmetric stretching vibration. Impurities of hydrozincite are identified by a band around 1060 cm −1 . An additional…
Biomorphic silicon nitride (Si 3 N 4 ) ceramics with fibrous morphology were fabricated by combining sol–gel infiltration with carbothermal reduction nitridation from wood precursor. Y 2 O 3 ‐incorporated silica sol was used as the infiltrated solution to promote the formation of fibrous Si 3 N 4 grain at 1600°C under…
The system Al 2 O 3 -P 2 O 5 -H 2 O contains many phosphate minerals that occur in various geologic environments. The natural occurrence of variscite (AlPO 4 ·2H 2 O, orthorhombic), including its monoclinic polymorph metavariscite, is largely restricted to soils and aluminous rocks like Al-rich igneous rocks and shale…
Cisplatin is one of the most effective cytotoxic agents against cancers. Its usage, however, is limited because of severe resistance and systemic toxicity. A formulation of cisplatin-loaded Au-Au(2)S nanoparticles (NPs) with near-IR (NIR) sensitivity is reported to partly overcome this limitation in this paper. NIR se…
Surface modification of a segmented polyurethane was achieved by blending with novel PEO-containing amphiphilic triblock copolymers (PEO-polyurethane-PEO). Three copolymers having different PEO MW (550, 2000, 5000) were used as surface modification additives. The protein resistance of the blend surfaces was evaluated…
Fluorophlogopite, a new F-dominant mineral of the mica group, was found at Monte Calvario, Biancavilla, lower southwestern flanks of Mt. Etna volcano (Catania, Sicily, Italy). The mineral occurs in autoclasts of gray-red altered benmoreitic lavas, primarily associated with fluoro-edenite, alkali-feldspars, clino- and…
To examine the nature of the lower closure point of adsorption hysteresis in ordered mesoporous silicas, we measured the temperature dependence of the adsorption-desorption isotherm of nitrogen for three kinds of ordered silicas with cagelike pores and three kinds of ordered silicas with cylindrical pores. The lower c…
The detailed XRD analysis, Raman spectroscopy and PL study were achieved in order to enlarge the understanding of the radiative processes in Ca, Sr, Ba thiogallate phosphors, prepared by solid state reaction with carbon as a reduction atmosphere. The crystal field splitting, Stokes shift, redshift and centroidal shift…
Complex PbTe flower-like structure was obtained through a facile and low-cost solution-phase method. Guided by the kinetically controlled regime, the morphology could be evolved into 1D nanowires and size-tunable nanocubes. This method provides an additional strategy for fabricating fcc nanocrystals and can be extende…
Experimental brackets on the melting temperature of high albite (NaAlSi 3 O 8 ) were determined at 2.33 ± 0.03 GPa (1360-1370 °C) and 2.79 ± 0.03 GPa (1370-1389 °C) in a piston-cylinder apparatus. All run products that quenched to a glass were analyzed by Fourier-transform infrared spectroscopy and found to contain ≤5…
A library of photocrosslinkable poly(beta-amino ester)s (PBAEs) was recently synthesized to expand the number of degradable polymers that can be screened and developed for a variety of biological applications. In this work, the influence of variations in macromer chemistry and macromer molecular weight (MMW) on networ…
In this report, the On resonance PARamagnetic CHemical Exchange Effects (OPARACHEE) method was implemented in vivo using WALTZ-16* as a preparation pulse with a standard spin echo sequence to detect the accumulation and clearance of the TmDOTA-4AmC(-) in mouse kidney. The performance of the technique in vivo is descri…
Selective removal: Alkyl and phenyl groups were immobilized within an interlayer space of a layered titanate to adsorb selectively and effectively 4-nonylphenol (NPh, in light colors) from aqueous solution. The immobilization of two kinds of functional units in a confined nanospace is a useful way to tailor materials…
Highly dealuminated Y zeolite-supported mononuclear iridium complexes with reactive ethylene ligands were synthesized by chemisorption of Ir(C 2 H 4 ) 2 (C 5 H 7 O 2 ). The resultant structure and its treatment in He, CO, ethylene, and H 2 were investigated with infrared (IR) and extended X-ray absorption fine structu…
We present angle-resolved photoemission data along the $M\text{\ensuremath{-}}\ensuremath{\Gamma}\text{\ensuremath{-}}M$ direction from a ${\mathrm{Cu}}_{2}\mathrm{O}(111)$ single crystal, collected at high photon energies ($h\ensuremath{\nu}=619$ and $891\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$) and $T=100\phantom{\ru…
We report chiroptical properties of optically active d -/ l -penicillamine-capped gold clusters as a function of temperature or dispersion phase. The clusters examined are size-selected via gel electrophoresis. Circular dichroism (CD) signals of the gold clusters (0.57 nm in the core diameter), whose sizes have been d…
In this study, a new poly(lactic acid)-poly (ethylene oxide)-Arg-Gly-Asp (PLA-PEO-RGD) derivative was synthesized, and paclitaxel-loaded PLA-PEO-RGD micelles were prepared by this derivative. The solubility assay showed that micelles mixed with Pluronic F-68 as surfactant could increase the solubility of this hydropho…