Materials Literature
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Abstract The synthesis of secondary amine by the condensation of primary amines with aldehydes to form an imine intermediate, which then reacts with alkyl halides via alkylation to finally afford secondary amines after hydrolysis, is generally referred to as Decker‐Becker secondary amine synthesis and also known as Fo…
Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species.
Abstract Migration of alkyl groups in polyalkylbenzenes or polynuclear aromatic compounds in the presence of anhydrous aluminum chloride or the mixture of protonic acid and Lewis acid has been reported in the Baddeley isomerization reaction. It has been found that the amount of α‐isomer can be reduced by the addition…
Abstract The reaction between an organozinc halide and acyl halide to form ketone is generally known as the Blaise ketone synthesis. Organozinc chloride is known as Blaise reagent, which is formed by the reaction between anhydrous zinc chloride and a Grignard reagent and can be applied directly to the coupling with ac…
This SAE Recommended Practice provides test procedures, performance requirements, and guidelines for cleaners intended for use on motor vehicles.
Abstract Synthesis of 2‐substituted pyrroles (2‐pyrrole‐carboxylates or 2‐sulfonyl pyrroles) via the basic condensation between alkyl isocyanoacetate (or tosylmethyl isocyanide) and α,β‐unsaturated nitroalkenes (or β‐nitroacetates) is generally referred as the Barton‐Zard pyrrole synthesis. This reaction has been repo…
Abstract The synthesis of peptide involving the process of conversion of the amino acid into itsN‐carbobenzoxy derivative, activation of the carboxyl group, formation of peptide with the second amino acid, and deprotection via hydrogenolysis is known as Bergmann‐Zervas peptide synthesis. The reductive removal of the c…
Abstract The Brook rearrangement is a base‐catalyzed intramolecular migration of a silyl group from a carbon atom to an oxygen anion via a mechanism involving a hypervalent pentacoordinate silicon species with retention of the configuration at the silicon atom and inversion of the configuration at the carbon atom. The…
Abstract Any process involving the breakage of two π bonds and the formation of two s bonds to form a four‐membered ring structure in general belong to [2+2] cycloaddition. There are various chemical reactions based on [2+2] cycloaddition. The cycloaddition of olefins under photochemical conditions is known as photoch…
The efficiency of Eu3+ luminescence by energy transfer from an antenna ligand can be strongly dependent on the metal ion coordination geometry. The geometric component of the Eu(III) sensitization has been probed using series of tetradentate 1,2-HOPO derivatives that are connected by bridges of varying length and geom…
We investigate the electrical transport in mesoscopic structures of La$_{0.67}$Ca$_{0.33}$MnO$_3$ in the regime of the metal-insulator transition by fabricating microbridges from strained and unstrained thin films. We measure current-voltage characteristics as function of temperature and in high magnetic fields and wi…
The finite element simulation of dynamic wetting phenomena, requiring the computation of flow in a domain confined by intersecting a liquid-fluid free surface and a liquid-solid interface, with the three-phase contact line moving across the solid, is considered. For this class of flows, different finite element method…
We report a method to pattern monolayer graphene nanoconstriction field effect transistors (NCFETs) with critical dimensions below 10 nm. NCFET fabrication is enabled by the use of feedback controlled electromigration (FCE) to form a constriction in a gold etch mask that is first patterned using conventional lithograp…
Uniaxial hot pressing has been used to obtain ceramics based on zinc oxide, and their optical, x-ray-structure, luminescence, and scintillation characteristics have been studied. It is shown that, by changing the concentration of the dopant (Ga) and the codopant (N), it is possible to change the intensities of the edg…
As it was discovered earlier the crystal lattice of ternary hexagonal RTX compounds exhibits a criticality for specific values of the ratio of the lattice parameters c/a around the interval of 0.565 - 0.575. To explore this effect in more detail, we have prepared polycrystalline samples of Ce1-xYxPdAl and SmPdAl and m…
The objective of this study was to determine the photothermal and photochemical tissue response to carbon nanotube inclusion in laser therapy using experimental and computational methods. In this study, we specifically considered varying types and concentrations (0.01-1 mg/ml) of carbon nanotubes (CNTs), e.g., multi-w…
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Research of ionic liquids (ILs) is one of the most rapidly growing fields in the past years, much of which has the ultimate aim of large scale industrial application [1]. Due to their unique properties such as negligible vapor pressure at room temperature, stable liquid phase over a wide temperature range and stabilit…
Ionic liquid (IL) N-hexylpyridinium bis(trifluoromethylsulfonyl)imide ([C6py][NTf2]) was synthesized by ion exchange method. The density and surface tension of air- and water- stable hydrophobic IL [C6py][NTf2] were measured and the recorded temperature was in a range of T = (283.15 – 338.15) K. The viscosity was meas…