Materials Literature
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A wide variety of electroactive materials are accessible based on a cyclopentadithiophene skeleton. This Feature Article describes the synthesis of these materials, examines their intriguing properties (i.e. high electrical conductivity, low band-gap and extended π-conjugation) and discusses the complex relationship b…
Supramolecular synthesis, by combining molecules through non-covalent interactions, makes it possible to build up extremely sophisticated supramolecular assemblies in the solid state and offers endless architectural possibilities.
The microstructure and properties of a novel magnesia phosphate cement (MPC) with large amounts of fly ash were studied in the present work. For comparison purposes, reference specimens without the incorporation of fly ash were also investigated. The effect of fly ash content on the properties of MPC was studied with…
Dislocation structure in rapidly solidified Mg97Zn1Y2 ribbon with the long period stacking order (LPSO) phase is investigated by conventional transmission electron microscopy. In the grain with the LPSO phase there are no a dislocations lying on the basal plane, and a number of c+a dislocations are visible. On the oth…
Controlled release formulation of an herbicide, 2,4-dichlorophenoxyacetate (24D) was developed by the virtue of the formation of organic–inorganic nanohybrid material and its ion exchange property. The inorganic Zn–Al layered double hydroxide (ZAL) was used as a matrix, hosting an active agent or a guest, 24D by self-…
Silicon micro- and nanostructures are found in integrated circuits, sensors, and actuators, and the performance and reliability of many of these devices are affected by thermal conduction. Conduction processes in micro- and nanostructures are complicated by phonon interactions with grain and material boundaries. Phono…
Siloxane-based organic–inorganic hybrid monoliths with well-defined macropores and/or mesopores have been synthesized by a sol–gel process, accompanied by polymerization-induced phase separation. Using aklyltrialkoxysilanes and alkylene-bridged alkoxysilanes, two different categories of organosiloxane networks have be…
The use of N-methyldiethanolamine (mdaH2) in reactions with Fe(III) and Ni(II) sources has led to Fe22 and Ni24 products; the clusters are the highest and second-highest, respectively, homometallic clusters for these metals to date, and possess S = 0 and S = 6 ground states, respectively.
Environmentally compatible polymers (green polymers) are the key to sustainable developments for our rich and convenient life. In order to develop green polymers, it is essential to understand that na
Recent progress in understanding and controlling spintronic properties of (Ga,Mn)As and related compounds is contrasted to diverging experimental and theoretical results concerning the origin of high temperature ferromagnetism discovered in an ample class of magnetically doped wide‐band‐gap semiconductors.
High-quality Ce3+-doped Y3Al5O12 (YAG:Ce3+) phosphors were synthesized by a facile sol-gel combustion method. In this sol-gel combustion process, citric acid acts as a fuel for combustion, traps the constituent cations and reduces the diffusion length of the precursors. The XRD and FT-IR results show that YAG phase ca…
The electrochemical properties of CdSe quantum dots with electrochemically inactive surface ligands (TOPO) have been investigated in comparison with the analogous nanocrystals containing electrochemically active oligoaniline ligands. The TOPO-capped nanocrystals have been studied in a wide size range (from 3 to 6.5 nm…
The results of experimental investigation of the chemical phase composition, crystal structure, and magnetic properties of the manganite La0.70Sr0.30MnO3−γ (0 ≤ γ ≤ 0.25) with perovskite structure depending on the concentration of oxygen vacancies are presented. It is found that the mean grain size of the stoichiometr…
We demonstrate the two-dimensional silicon backbone structure of siloxene nanosheets, which produces relatively monodisperse nanosheets with a thickness of 0.7 nm and lengths in the range 100-200 nm; the thickness is an order of magnitude smaller than that of previously reported silicon nanoparticles prepared by a var…
Heterogeneous chiral Mn(salen) catalysts axially immobilized on mesoporous materials via phenyl sulfonic groups result in remarkably higher ee values (up to 95%) for asymmetric epoxidation of unfunctionalised olefins.
Films of brucite-type cobalt hydroxide with nanorod morphology and hydrotalcite-type cobalt hydroxide with nanosheet morphology films were fabricated by heterogeneous nucleation in a chemical bath using water and a mixed solution of water–methanol as solvents, respectively. Since oxygen is around 25 times more soluble…
Abstract Poly(methyl methacrylate)/single‐walled carbon nanotube (PMMA/SWNT) composites were prepared via in situ polymerization induced either by heat, ultraviolet (UV) light, or ionizing (gamma) radiation. The composites dissolved in methylene chloride and then cast into films exhibited enhanced transparency as comp…
The synthesis, structural and magnetic characterisation of a new polymetallic cobalt complex are reported; the magnetic behaviour is unusual.
The first members of the classes of the organorhenium(VII) oxides and organomolybdenum(VI) oxides were described during the 1960s and 1970s. However, despite the fact that methyltrioxorhenium(VII)(MTO) is probably the best examined organometallic oxide known, many of its derivatives as well as the Mo congeners were no…
Single-crystal Cr2O3 with regular mesopores has been synthesized using mesoporous silica KIT-6 as a template and characterized by using XRD, HRTEM and nitrogen adsorption/desorption.