Materials Literature
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Here, we report the preparation and characterization of hollow polymer microspheres based on the preprecipitation of porous calcium carbonate cores with an average size of 5 μm and their use for encapsulation of living microorganisms. The microspheres filled with individual living E. coli cells were prepared by layer-…
The relationship between the strain and defect structure in gadolinia-doped ceria has been studied with atomistic simulations. It was found that the next nearest neighbor type associations are preferred under zero or tensile applied strains, but the nearest neighbor type defect associations became favorable under comp…
Abstract Calix[4]phyrins are an important class of hybrid macrocyclic systems at the interface between porphyrins and calixpyrroles (porphyrinogens). A new stepwise synthesis of oxidation‐resistant meso‐hydrogenated calix[4]phyrins is reported, which allows variable substitution in the residues of their sp2‐meso‐cente…
Plasma aided materials conversion is the use of charged particles for producing new materials with unusual and superior properties or to convert unwanted materials such as waste into environmentally friendly products. The near LTE plasma (in atmospheric or reduced pressure) is a nice tool for engineering of materials…
The solubility of l -lactide in pure ethanol, ethyl acetate, acetone, isopropanol, methanol, and methylbenzene from (278.15 to 338.15) K was determined by dynamic method with a laser monitoring technique. It was found that l -lactide is sparingly soluble in ethanol, isopropanol, methanol, and methylbenzene while it ha…
Enhanced luminescence in rare‐earth‐doped chalcogenide glass–ceramics is of great interest for the potential integrated optoelectronic devices. However, fundamental mechanism on the enhancement of luminescence upon crystallization remains largely unknown. We report the fabrication and characterization of wide transmis…
Abstract The performance of glycidyl methacrylate (GMA) functionalized acrylonitrile‐butadiene‐styrene core–shell impact modifiers (R‐ABS) with varied GMA content, crosslinking degree of rubber phase, core–shell ratio, and initiator type in toughening of poly(butylene terephthalate) (PBT) was investigated. Results sho…
The adsorption mechanism of a series of macroporous adsorption resins ( p -(CH 3 NH)PhL (L = NH 2 , OH, COOH)) with rutin have been investigated using density functional theory calculations at B3LYP/6-31G(d,p) level of theory. Solvent effects on these species were explored using calculations that included a polarizabl…
The novel complex hydride YLiFeH6 with the Fe–H complex anion ([FeH6]4−) was synthesized by hydrogenation of YFe2 together with additional Li. Li adjusts the original imbalanced charge between Y3+ and [FeH6]4− by donating an electron to convert into Li+ during the hydrogenation, resulting in the formation of the well…
Abstract Well‐dispersed poly(methyl methacrylate) (PMMA)–bentonite clay composite was synthesized by emulsion polymerization using methyl methacrylate (MMA) monomer and 3% sodium carbonate treated bentonite clay. The composite lost its transparency normally encountered with the neat PMMA. The composite was characteriz…
β-Tetraethylsulfanyl-substituted [28]hexaphyrin 5 was prepared and converted to the corresponding β-tetraethylsulfonyl [28]hexaphyrin 6 and tetraethylsulfanyl [26]hexaphyrin 7. Both 5 and 6 are antiaromatic molecules with figure-of-eight structures while the major conformer of 7 is an aromatic species with a rectangul…
The mechanisms of formation of organically modified (phenyl, vinyl, and methyl) silica materials with cubic Pm3n and hexagonal p6m periodic mesostructures obtained in one step in the presence of the cetyltrimethylammonium bromide (CTA(+)B) surfactant are reported in this study. Understanding the way these complex mate…
In this paper, we clarify the physical mechanism for the phenomenon of negative output differential resistance (NDR) in short-channel graphene FETs through nonequilibrium Green's function simulations and a simpler semianalytical ballistic model that captures the essential physics. This NDR phenomenon is due to a trans…
Abstract The crystallization behavior of a polyamide 6/organo‐modified montmorillonite (PA 6/OMMT) nanocomposite has been investigated by scanning chip calorimetry and wide‐angle X‐ray scattering, with emphasis placed on the evaluation of the effect of supercooling/cooling rate on the crystal/mesophase polymorphism of…
Abstract Lithium fluoride (LiF) produced in single crystals and doped with proper activators is a highly sensitive phosphor used in several applications such as integrated optics, colour centre laser and radiation dosimetry. In this work, we have developed a new synthetic chemical co-precipitation route for the synthe…
Camber evolution and stress development during co‐firing of asymmetric bilayer laminates, consisting of porous Ce 0.9 Gd 0.1 O 1.95 gadolinium‐doped cerium oxide ( CGO ) and La 0.85 Sr 0.15 MnO 3 lanthanum strontium manganate ( LSM )‐ CGO were investigated. Individual layer shrinkage was measured by optical dilatomete…
Chalcogenide glasses have been widely studied due to their extraordinary transparency in the mid‐infrared region. Their transparency, combined with tailorable thermo‐mechanical properties, makes them ideal candidates for various optic applications. Extrinsic impurities within the glass matrix can impede their integrat…
Tricalcium diyttrium trisilicon oxide, Ca(3)Y(2)(SiO(4))(3) doped with Eu(2+) and Eu(3+) belongs to a very limited number of hosts able to accommodate both Eu(3+) and Eu(2+) ions, which might make it useful for white light emitting diodes (WLEDs) based on UV chip technology. In this contribution we present a detailed…
Conjugated polymer nanoparticles with incorporated antifade agents were prepared, and ensemble and single particle measurements showed that incorporation of antifade agents effectively improves the fluorescence quantum yield and photostability of the conjugated polymer nanoparticles, likely by a combination of triplet…
Abstract Adding a nucleating agent is one of the best ways to accelerate the crystallization rate of poly(L‐lactic acid) (PLLA) so as to obtain a high degree of crystallinity during the process, which will improve the heat distortion temperature of final products. In the work reported, N, N′‐bis(benzoyl)sebacic acid d…