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。
Mesoporous thin films functionalized with silylated [small beta]-diketone compounds with symmetry mesostructure dependent on the probe quantity were used as fast uranyl species sensors with high selectivity and sensitivity.
Biologically modified ceramics (biocers) are understood as a class of nanocomposites which combine biocomponents with ceramic-like matrices. Biocers containing biocomponents can be prepared as a bulk material or as coatings by sol–gel and freeze-cast techniques from inorganic nanosols or by special CVD methods. By avo…
Triple-helical structures of (Pro-Hyp-Gly)n (n = 10, 11) at 100 K and room temperature (RT) were analyzed at 1.26 A resolution by using synchrotron radiation data. Totals of 49 and 42 water molecules per seven triplets in an asymmetric unit were found for the structures at 100 K and RT, respectively. These water molec…
Highly luminescent water-soluble CdTe nanorods were prepared with the assistance of the mixed ligand system of cysteine and thioglycolic acid; the aspect ratio and photoluminescence of the CdTe nanorods could be controlled by the refluxing time.
We reported the interesting finding that large scale uniform poly(o-phenylenediamine) nanobelts with several hundred micrometers in length, several hundred nanometers in width, and several ten nanometers in height can be rapidly yielded from an o-phenylenediamine–HAuCl4 aqueous solution without the additional introduc…
We present a novel approach to probe elastic properties of polyelectrolyte multilayer microcapsules. The method is based on measurements of the capsule load-deformation curves with the atomic force microscope. The experiment suggests that at low applied load deformations of the capsule shell are elastic. Using elastic…
AFI type molecular sieves with various morphologies such as aggregated sphere, plate, rod, prism and barrel were synthesized under varying reaction conditions under microwave irradiation. Hexagonal plate-like crystals with an aspect ratio of about 0.2 were obtained in the presence of silica under alkaline conditions.…
Spontaneous formation of ordered macroporous titania is achieved by dropwise addition of titanium alkoxides to aqueous ammonia in the absence of auxiliary organic templates.
Novel red long-lasting phosphorescent materials β-Zn3(PO4)2:Mn2+,M3+ (M = Al and Ga) were synthesized by means of high-temperature solid-state reaction. Photoluminescence (PL) excitation and emission, long-lasting phosphorescent (LLP) emission, decay curves, brightness and chromaticity coordination, and thermostimulat…
The highly dichroic fluorescent dyes 4,7-bis(p-alkoxyphenyl)-, 4,7-bis(p-alkoxymethylphenyl)-, and 4,7-bis(p-alkoxycarbonylphenyl)-2,1,3-benzothiadiazoles have been synthesized and their dichroic properties evaluated. A solution of the former dye dispersed in the commercial liquid crystalline MLC-2039 host phase showe…
The preparation of gold particle coated silica microspheres is described and the optical absorption spectra for various surface coverages of gold particles are presented. Onion-shell particles with the structure silica-gold-silica are also described. An effective medium model is used to quantify the surface plasmon sh…
Phase-field models, the simplest of which is Allen–Cahn's problem, are characterized by a small parameter ε that dictates the interface thickness. These models naturally call for mesh adaptation techniques, which rely on a posteriori error control. However, their error analysis usually deals with the underlying non-mo…
In recent years, there has been a resurgence of interest in transparent ferroelectric glass-ceramics (TFGCs), which are a special class of glass-ceramic composites that combine the low cost of fabrication and forming of transparent glass with the superior nonlinear optical and electro-optical properties of ferroelectr…
Pioneers in the field of small diameter graft development sought to promote graft endothelialization and, thereby, increase patency by transplanting a varying degree of autologous endothelial cells onto vascular grafts prior to implantation. This process has become known as endothelial cell seeding. The underlying hyp…
The first examples of luminescent lanthanide complexes with an o-nitrobenzoic acid-based ligand, 2-nitro-4-thiophen-3-yl benzoic acid, have been isolated. The structural and preliminary photophysical characterization is presented.
The variable temperature magnetic susceptibility, X-ray crystallography, and IR and Raman spectra of a new dinuclear complex [{Fe(II)(NCBH(3))(4-phpy)}(2) mu-bpypz)(2)] demonstrated the first two-step spin-crossover associated with a 1 : 1 mixture of high-spin pair [HS-HS] and low-spin pair [LS-LS] at the plateau.
Novel colloidosome microcapsules with aqueous gel cores and integral shells of polymeric colloid particles have been prepared and characterized. Our method is based on templating water-in-oil emulsions stabilized by polystyrene (PS) latex particles, followed by gelling of the aqueous phase with a suitable hydrocolloid…
A macrohomogeneous model is presented for a porous electrode that includes coupled potential and concentration gradients with linear kinetics. The equations are solved to obtain an analytical expression for the impedance of a porous electrode. Complex plane plots are presented that illustrate two well-defined arcs: a…
Anchorage of PdII ions into mesoporous ion-exchange resins functionalized with sulfonic groups is highly effective for the direct synthesis of hydrogen peroxide using methanol as a solvent at 313 K. The high performance of these catalytic systems is due to the ability of sulfonic acid groups of the resin to interact a…
Preparation of hybrid organic-inorganic MCM-41 and SBA-15 silicas functionalized with perfluoroalkylsulfonic acid groups has been achieved in a single step by reacting the mesoporous silicas with 1,2,2-trifluoro-2-hydroxy-1-trifluoromethylethane sulfonic acid beta-sultone; the catalysts showed higher activity than com…