Materials Literature
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All-electron GW calculations of Si, diamond, and SiC were carried out to obtain the quasiparticle energy spectra, for the first time, including both valence and core levels, corresponding to the ultraviolet and X-ray photoemission spectra (UPS and XPS). We used an all-electron mixed basis approach, in which wave funct…
The novel bimetallic Fe(II)Ag(I) thermal-induced spin crossover coordination polymer {Fe(II)(3,5-dimethylpyridine)(2)[Ag(I)(2)(CN)(3)][Ag(I)(CN)(2)]}(n) was synthesized by one-pot reactions between 3,5-dimethylpyridine and K[Ag(I)(CN)(2)] in the presence of Fe(II) salt (FeSO(4).(NH(4))(2)SO(4).6H(2)O). Magnetic studie…
The search for natural, biocompatible and degradable materials amenable to be used in biomedical/analytical applications has attracted attention, either from the environmental or medical point of view. Examples are the polysaccharides extracted from natural gums, which have found applications in the food and pharmaceu…
Brighter SERRS nanotags ideal for improved SERRS imaging were prepared by the controlled addition of electrolyte producing a dimer enriched solution, which was incubated with a Raman reporter before being stabilised by a polyethylene glycol (PEG) shell.
Pseudohexagonal and single-crystal-like aragonite tablets, found in nacre, could be uniformly fabricated through a temperature-varying approach for the first time, indicating the triplet twinning nature and implying a potential significance in biomineralization.
This study evaluates two mechanical properties, tensile strength and tear strength, of maxillofacial materials reinforced with functional polyhedral silsesquioxane (POSS) nanoparticles at 0.0, 0.5, 1.0, 2.0, and 5.0% (mass/mass) loading. Adding POSS was found to significantly affect the overall tensile strength and ex…
To investigate the influence of the spatial placement of the organic functional groups in mineralization, an amphiphilic peptide assembled monolayer with strictly arrayed carboxyl groups was applied to a mineralization system of calcium phosphate.
The Hencky strain is a logarithmic strain extended to a three-dimensional analysis. By considering logarithm of matrix, components of the Hencky strain are calculated for tensile and shear deformations. ECAP (Equal-Channel Angular Pressing) and HPT (High Pressure Torsion) are giant straining processes based on simple…
The chemical stability and electrical properties of three promising perovskite-related structures , , and were tested in air, humidified and , as well as in . Powder X-ray diffraction studies confirmed the formation of a cubic perovskite-like structure. The change in the lattice constant was consistent with B-site sub…
Modular oxacyclophanes featuring m-terphenyl units scaffold inter-pi-system interaction in face-to-face stacked or orthogonal orientations, leading to distinct photophysical properties.
We have designed a conventional one-step organic coupling synthetic method to prepare a series of 10H-phenothiazine (PTZ) derivative fluorophores and investigated their optical behavior under alkaline conditions. The unexpected proton detachment at N-10 position (10N-H) of these PTZ derivatives provides switching betw…
Among the carbon allotropes newly discovered during the last few decades, carbon nanotubes (CNTs) have attracted enormous attention due to their structural and electronic properties with strong one dimensional character. The physical and chemical features of such systems are intrinsically rich and complex, and can onl…
Analytical expressions for the central k 0 and noncentral k 1 force constants of two-dimensional (graphene, silicene) and three-dimensional (diamond, silicon) structures have been obtained within the previously proposed model of the binding energy of carbon atoms in graphene. The Kleinman internal displacement paramet…
gamma-Irradiation of gelatin and collagen hydrogels can be used for sterilization and mechanical stabilization, providing biomaterials suitable for both tissue engineering and drug-delivery systems. Controversial results have been reported regarding the extent of irradiation-induced cross-linking and degradation, whic…
Solid-State (31)P NMR studies reveal that phosphinine ligands employed for the stabilisation of gold nanoparticles react in part during the synthesis, and that the particles are stabilised by a mixture of intact phosphinine units together with several other surface-bound species. The spectral data of these species are…
Thin layers of Pd and its alloys with Pt, Au and Rh were prepared by electrodeposition on a Au substrate. Hydrogen electrosorption by the obtained electrodes was studied in 0.5 M H(2)SO(4) solution using cyclic voltammetry and chronoamperometry. The influence of the alloying process on selected thermodynamic (the amou…
Silver particles have been prepared by reduction of silver nitrate with ascorbic acid in acidic aqueous solution containing a low concentration of a commercial polynaphthalene sulfonate polymer (Daxad 19) as dispersant agent. The reduction has been induced and controlled by the slow addition of ascorbic acid at a fixe…
Compared with conventional fibrous filters made of microfibers, the nanofibrous filters exhibit some special performances. Here, PVA nanofibrous membrane with thickness 28.37um was made by electrospinning 8% PVA solution on conventional cotton scaffold. The air filtration test system was built to test the filtration p…
Three new phenyltin-substituted polyoxometalates, ((CH3)2NH2)4[Sn(C6H5)PW11O39] (1), K7[Sn(C6H5)P2W17O61] (2), and ((CH3)2NH2)6K[Sn(C6H5)(H2O)P2W20O70(H2O)2] (3), have been synthesized and characterized by single crystal X-ray diffraction, 31P and 1H NMR, and FT-IR spectroscopy. Significantly, the mono-substituted phe…
Highly-textured n-type ZnO:Cu films with room-temperature ferromagnetism have been hydrothermally grown in aqueous solution at 90 °C using PLD-derived ZnO seed layers on different substrates (quartz, silicon, glass and sapphire). The crystallinity of the ZnO seed layers on different substrates plays an important role…