Simple-cubic microcubes assembled by palladium nanocubes
We report a method to prepare nanocube-based super-crystals, which not only have a well-defined structure but also have a well-defined shape and size.
Materials Literature
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Speedy fabrication of free-standing layer-by-layer multilayer films by using polyelectrolyte complex particles as building blocks
A novel method for speedy fabrication of free-standing layer-by-layer (LbL) multilayer films in salt free media, and without the need for a sacrificial sublayer is described by using two different polyelectrolyte complex (PEC) nanoparticles as LbL self-assembly building blocks. Negatively charged polyelectrolyte compl…
Preparation and characterization of second order non-linear optical properties of new “push–pull” platinum complexes
In this contribution, we report the synthesis and characterization of the second order non-linear properties of a series of unconventional terpyridyl and dipyridylphenyl platinum complexes. These new platinum complexes consist of a tridentate ligand substituted by a high electron acceptor, and a chloro or an arylacety…
PARABOLOIDAL REFLECTOR IN CHIRAL MEDIUM SUPPORTING SIMULTANEOUSLY POSITIVE PHASE VELOCITY AND NEGATIVE PHASE VELOCITY
Focused high frequency electromagnetic waves reflected from a PEC paraboloidal surface placed in homogeneous, reciprocal and isotropic medium with high chirality parameter are analyzed.The value of the chirality parameter is set such that it simultaneously supports modes of negative and positive phase velocities.Prese…
Dynamically switchable biointerfaces
Smart surfaces can alter their macroscopic properties on demand. Over the past decade, a variety of approaches have been pursued to create reversibly switchable surfaces, which were triggered by several different stimuli. For instance, stimuli-responsive polymers or self-assembled monolayers (SAMs) can be employed to…
An Improved Process for the N‐Demethylation of Opiate Alkaloids using an Iron(II) Catalyst in Acetate Buffer
Abstract An improved process to N‐demethylate opiate alkaloids utilising a solution of the ferrous porphyrin, tetrasodium 5,10,15,20‐tetra(4‐sulfophenyl)porphyrinatoiron(II) [=Fe(II)‐TPPS ( 8 )], in acetate buffer is described. This method provided the corresponding N‐demethylated opiates in good yield with high repro…
Engineering noncovalent spin–spin interactions in an organic-pillared spin cage
A prism-shaped spin cage, in which two radical panels were aligned in a face-to-face fashion at a distance of 6.8 A, efficiently induced through-space metal-radical spin-spin interaction by encapsulation of a planar copper complex.
Free flow electrophoresis for the separation of CdTe nanoparticles
Nanoparticles with narrow size distribution are the cornerstones for better quantum electronics and optics, biological applications, and therapeutic devices. In this communication, we present a new and simple means to separate CdTe nanoparticles into more mono-dispersed size groups by the free-flow electrophoresis (FF…
Mathematical approach for the assessment of similarity factor using a new scheme for calculating weight
The objective of the present work was to propose a method for calculating weight in the Moore and Flanner Equation. The percentage coefficient of variation in reference and test formulations at each time point was considered for calculating weight. The literature reported data are used to demonstrate applicability of…
Dynamic Pulse Power and Energy of Ionic-Liquid-Based Supercapacitor for HEV Application
Asymmetric electrochemical double-layer carbon supercapacitors ͑AEDLCs͒ with N-methoxyethyl-N-methylpyrrolidinium bis͑tri-fluoromethanesulfonyl͒imide ͑PYR 1͑2O1͒ TFSI͒ ionic-liquid electrolyte can safely cycle above room temperature with maximum cell voltage as high as 3.7 V over several thousand cycles and are thus p…
The mechanism of quenching of the lanthanide excited state for optical probes using sensitised emission
The mechanism of quenching of the excited state of terbium and europium complexes by electron-rich reductants occurs by formation of an exciplex involving the triplet excited state of the sensitising chromophore.
First Principles Study on Intrinsic Vacancies in Cubic and Orthorhombic CaTiO<SUB>3</SUB>
The structural relaxations and the formation energies of intrinsic defects in cubic and orthorhombic CaTiO3 were investigated by a first principles projector-augmented wave method. It was found that cations and oxygen vacancies in both phases cause extra levels near the valence band maximum and the conduction band min…
Microfluidic syntheses of well-defined sub-micron nanoporous titania spherical particles
Monodispersed titanium dioxide-octadecylamine hybrid spherical particles (particle size of 470 nm and coefficient of variation of 5.0%), which were subsequently converted to be nanoporous, were successfully synthesized by the microfluidic reaction of titanium tetraisopropoxide and octadecylamine.
Reversible photoisomerisability and particle size changes of mill-dispersed azobenzene crystals in water
Azobenzene crystals exhibited E/Z photoisomerisability at a level of ca. 30%, accompanied by particle size changes, when they were milled in water to fabricate submicron-sized particles.
Synthesis of monoclinic monazite, LaPO4, by direct precipitation
The direct synthesis of LaPO4 and La0.96Sr0.04PO4monazite using nitrates and phosphoric acid to produce uniform and non-agglomerated monazite powders without the formation of any intermediate hydrated rhabdophane phase (LaPO4·½H2O) is described.
In situ investigation of molecular kinetics and particle formation of water-dispersible titania nanocrystals
Metal oxide nanoparticles can be fabricated under high control via nonaqueous sol-gel synthesis. This route has been shown to lead to highly crystalline, uniform nanostructures, which explains the high and growing interest it is receiving. The underlying mechanisms are, however, so far only rudimentarily understood on…
Synthesis, mesomorphism and electrochemical properties of tetrasubstituted zinc and copper phthalocyanines
We describe the synthesis of highly soluble, tetrasubstituted zinc and copper phthalocyanines exhibiting liquid crystalline properties. These compounds were characterized using elemental analysis, MS, 1H-NMR, FTIR and UV-Vis absorption spectroscopy. The liquid crystalline properties of phthalocyanines (Pcs) were studi…
Optical and electrical properties of aluminum doped zinc oxide thin films at various doping concentrations
Aluminum (Al) doped zinc oxide (ZnO) thin films have been prepared using sol-gel spin-coating method at various doping concentrations. The thin films were characterized using UV-Vis-NIR spectrophotometer and current-voltage (I-V) measurement system for optical and electrical properties respectively. The results show a…
Magnetization-induced second harmonic generation in a three-dimensional manganese octacyanoniobate-based pyroelectric ferrimagnet
The magnetization-induced second harmonic generation (MSHG) is observed using a three-dimensional MnII–NbIV pyroelectric ferrimagnet, [{MnII(H2O)2}{MnII(pyrazine)(H2O)2}{NbIV(CN)8}]·4H2O, in which electric polarization is along the b-axis and the magnetic easy axis is along the a-axis. The SH intensity gradually incre…
Photocatalytic Properties of TiO[sub 2] Nanostructures Fabricated by Means of Glancing Angle Deposition and Anodization
Structural, optical, and photocatalytic properties of various nanostructures prepared by glancing angle deposition (GLAD) and by electrochemical anodic oxidation of Ti have been studied. The nanorods were prepared on unheated glass substrates by using reactive sputtering of Ti in the GLAD regime. nanotubes and brush-t…