Materials Literature
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A novel composite hierarchical hollow structure is reported. The as-prepared products consist of discrete WO(2) hollow core spheres with W(18)O(49) nanorod shells ("hollow urchins"). The products showed unusual magnetic behavior.
Organic nanodisks, a new type of organic nanoparticles suitable for creating polymer-polymer nanocomposites, are produced by controlled polymerization within the hydrophobic interior of bicelles (discoidal lipid aggregates) used here as recyclable scaffolds.
Spinodal decomposition in siloxane sol-gel systems has been investigated in a macroporous silica mould (pore diameter D = 2.74 µm) with a bicontinuous structure. Methyltrimethoxysilane (MTMS) and tetramethoxysilane (TMOS) have been employed as siloxane gel sources and as-sintered hydrophilic and octadecylsilylated hyd…
The ammonolysis of beta-Ga(2)O(3) to alpha-GaN and the oxidation of alpha-GaN to beta-Ga(2)O(3) have been studied by means of in situ X-ray absorption spectroscopy (XAS), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). In situ X-ray absorption measurements on polycrystalline powder parti…
Vaccination is a highly effective method and a cheap tool for preventing certain infectious diseases. Routine immunization programs protect most of the world's children from diseases that claim millions of lives each year. There are many practical problems impeding vaccine delivery, especially to maintain the cold cha…
Developments in biotechnology have seen the growing use of macromolecules containing proteins, peptides, vaccines, antigens, genes, and growth factors as therapeutic agents. Because these macromolecules are easily denatured and metabolized rapidly in vivo, their protection and controlled release are required. Biodegra…
Substitution reactions between [Yb(TPP)(OOCCH3)(CH3OH)2] (1) and neutral bidentate ligands NN led to the formation of monoporphyrinate ytterbium(III) complexes [Yb(TPP)(OOCCH3)(NN)] (TPP = 5,10,15,20-tetraphenylporphyrinate anion; NN = 4-methyl-1,10-phenanthroline (2), 1,10-phenanthroline (3), 4,7-dimethyl-1,10-phenan…
A shape-persistent macrocyclic molecule having glutamic acid and oligooxyethylene moieties exhibits a hexagonal columnar liquid-crystalline phase at ambient temperature through nanosegregation and the formation of intermolecular hydrogen bonding.
Large degradable dendrimers (MW > 30 kDA) were synthesized in a divergent manner utilizing a novel 1,3,5-triazaadamantane (TAA) monomer that can degrade under acidic conditions.
The family of layered organic salts X[Pd(dmit) 2 ] 2 are Mott insulators and form scalenetriangular spin-1/2 systems with antiferromagnetic exchange interactions J . Among them, EtMe 3 Sb[Pd(dmit) 2 ] 2 has a nearly regular-triangular spin system with J = 220-250 K. Our previous study proposed that a quantum spin-liqu…
Using solid state ring opening polymerization of oxirane by an amino substituted azobenzene derivative a film material with extremely high rate of holographic surface relief grating formation was obtained.
The electrochemical characteristics of carbon nanobeads (CNBs) heat-treated at 1000, 1500, 2000, and 2800 ° C were investigated. The discharge capacity was highest at the high rate ( 10 C ) in the 2000 ° C heat-treated CNBs. Electrochemical impedance spectrometry indicated that the charge-transfer resistance of 2000 °…
The characteristics of guided modes in the planar waveguides which the core or cladding consists of chiral nihility meta-materials are studied theoretically. The dispersion curves, electromagnetic fields, energy flow distribution and the power of several low-order guided modes in the chiral nihility waveguides are pre…
The synthesis of a series of shape-persistent macrocycles (SPMs) (1-4 and 6) comprising different numbers and/or spatial arrangement of meta-substituted tetrafluorobenzene and benzene subunits interlinked with diacetylenes is described. To increase their solubility, all five SPMs were functionalized by four peripheral…
A series of N-glycosylamine based organogelators were synthesized from 4,6-O-protected saccharides introducing pyridylamines. The gelation properties of these compounds were studied in regard to their molecular structure by scanning electron microscopy, differential scanning calorimetry, FT-IR spectroscopy and quantum…
Fibroin, the protein of silk, and hydrolyzed fibroin have recently been described to enhance insulin sensitivity and glucose metabolism in 3T3-L1 adipocytes. Here, we report that a series of synthetic peptides derived from the fibroin sequence have enhancing effects on glucose transport in normal and insulin-resistant…
Sputtered Co is investigated as a suitable contact metal for bulk , and the results are compared to sputtered Ni. The coefficient of thermal expansion of Co matches that of bulk used in our study, and the compatible interface favors the selection of Co as a contact metal. Significant Ni diffusion into was observed. In…
Three cyanide-linked Fe(iii)Mn(iii) bimetallic clusters, [(Tp)Fe(CN)(3)](2)[Mn(acphen)](2) [; acphen = N,N'-ethylenebis(2-hydroxyacetophenylideneiminato) dianion], [(Tp)Fe(CN)(3)](2)[Mn(5-Bracphen)](2) [; 5-Bracphen = N,N'-ethylenebis(5-bromo-2-hydroxyacetophenylideneiminato) dianion], and [(Tp)Fe(CN)(3)](2)[Mn(salen)…
T-shaped bolaamphiphiles composed of a 4,4′-disubstituted biphenyl core and terminal diol groups with laterally attached oligo(siloxane) and carbosilane units were synthesized and investigated with respect to their self-assembly into liquid crystalline superstructures (thermotropic mesophases). Two different types of…
We have investigated oxygen non-stoichiometric BiMnO3±δ samples. It was found that the oxygen deficient samples could not be prepared by the direct high-pressure high-temperature method and other methods should be developed for the preparation of BiMnO3−δ. It was confirmed that stoichiometric BiMnO3 adopts the monocli…