Materials Literature
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We present an extensive study of the oxyborate material ${\text{Co}}_{5}\text{Ti}{({\text{O}}_{2}{\text{BO}}_{3})}_{2}$ using x-ray, magnetic, and thermodynamic measurements. This material belongs to a family of oxyborates known as ludwigites which presents low-dimensional subunits in the form of three leg ladders in…
Abstract A number of symmetrical and unsymmetrical azoalkanes of the general formula R′−N = N−R and related azoxy, hydrazone as well as azine derivatives have been synthesized in order to assess their potential as novel flame retardants for polypropylene alone or in combination with commercially available flame retard…
A new and efficient route to the recently reported 3-nitro-2-ethyldibenzofuran caging group was developed. Furthermore, its installation on a thymidine phosphoramidite is described. This caging group is efficiently removed through light-irradiation at 365 nm.
Dispersion of an aqueous H(2)PtCl(6) solution into a trifluorotoluene (TFT) solution of a polystyrene-block-poly(2-vinylpyridine)-block-poly(ethylene oxide) (PS-b-P2VP-b-PEO) triblock copolymer produced an emulsion-induced hollow micelle (EIHM), comprising a water nanodroplet stabilized by PEO, H(2)PtCl(6)/P2VP, and P…
Low molecular weight gelator molecules consisting of aliphatic acid, amino acid (phenylglycine), and omega-aminoaliphatic acid units have been designed. By varying the number of methylene units in the aliphatic and omega-aminoaliphatic acid chains, as defined by descriptors m and n, respectively, a series of positiona…
The effect of (001) TiO 2 anatase support on the electronic and catalytic properties of a V 2 O 5 monolayer is analyzed using density functional theory (DFT). The catalyst is represented by both clusters and periodic slabs. Using two experimentally relevant models of monolayer V 2 O 5 /TiO 2 (anatase) catalyst, both w…
Polylactide (DL)/polyethylene glycol/silicate nanocomposite blended biodegradable films have been prepared by solvent casting method. Rheological and thermal properties were investigated for both neat amorphous polylactide (PLA-DL form) and blend of montmorillonite (clay) and poly (ethylene glycol) (PEG). Melt rheolog…
ZnO has shown great promise for application in optoelectronic devices, in which the modulation of conductivity is crucial to device performance. In this paper, we have applied the Monte Carlo method to analyze the mobility of single-crystalline and polycrystalline MgZnO/ZnO heterostructure thin film layers. The effect…
A family of rare-earth cobalt phosphides La 1− x Pr x Co 2 P 2 (0 ≤ x ≤ 1) that belong to the ThCr 2 Si 2 structure type has been prepared and characterized by structural and magnetic methods and electronic band structure calculations. All studied quaternary phases exhibit multiple magnetic transitions, leading to an…
We first succeeded in preparing ferromagnetic materials of SmCo(5) nanoparticles in sizes of single nanometers by a chemical route using a polyol process. In order to produce ferromagnetic SmCo(5) nanoparticles with a CaCu(5)-type structure, the chemical preparation was conducted under a molar ratio of 1:1.3 of Sm:Co…
Preferential interactions between self-assembled monolayers (SAMs) terminated with amine functional groups and single-walled carbon nanotubes (SWNTs) were exploited to produce nanotube networks (SWNTnts) via spin coating. We provide insight into the mechanisms of this system while simultaneously demonstrating a facile…
A promising method for the production of few-layer graphene (FLG) is microwave plasma-enhanced chemical vapour deposition (MW PECVD). However, the growth mechanism of PECVD-synthesized FLG is not completely understood. The aim of this work was to investigate the initial stages of the growth process of FLG deposited by…
Nanoscale Ag semishell arrays with controlled size and tunable interparticle distance were prepared by combining nanosphere lithography with reactive ion etching. First, a large-area ordered monolayer of polystyrene (PS) nanospheres was deposited on glass substrates using the Langmuir−Blodgett (LB) technique. The PS s…
In this paper, we report the functionalization of the surface of multiwalled carbon nanotubes (MWNTs) with Au dendrimer encapsulated nanoparticles (DENs). The results show that, when pristine MWNTs having hydrophobic surfaces are exposed to DENs, the dendrimers aggregate on the MWNT surface. However, when the MWNTs ar…
The process of coherent creation of particle-hole excitations by an electric field in graphene is quantitatively described beyond linear response. We calculate the evolution of current density, number of pairs and energy in ballistic regime for electric field $E$ using the tight-binding model. While for ballistic flig…
Two types of oppositely charged short peptides comprised of a hydrophobic N-fluorenyl-9-methoxycarbonyl (FMOC) tail and a peptide backbone were designed and prepared via a standard solid phase peptide (SPPS) technique. When mixing these two oppositely charged peptides in water at a neutral pH, a supramolecular hydroge…
A new class of highly luminescent nine-coordinated europium(III) tris(beta-diketonate) bis[(ethylenedioxythiophene)pyrazolyl]pyridine (L) complexes has been synthesized and the photophysical properties studied: 1 = Eu(hfac)(3)(L); 2 = Eu(tta)(3)(L); 3 = Eu(btfac)(3)(L). The solid-state structure of complex 1 has been…
A simple synthesis of dipolar one- and two-dimensional chromophores bearing two or three 4H-pyran-4-ylidene moieties is reported. Whereas the pyranylidene fragments acting as donors are proaromatic, the spacer one is not. In the linear derivatives, chain elongation gives rise to a sharp increase in the second order no…
The NR/MWCNT nanocomposites were prepared by incorporation of MWCNT at different loading using two different methods, i.e., mechanical and solution mixing. For NR/MWCNT that prepared by mechanical mixing method, the results show that the scorch and cure time decrease with increasing MWCNT loading. The tensile modulus…
Multifrequency electron paramagnetic resonance (EPR) and high resolution transmission electron microscopy (HRTEM) investigations were performed on small (2 nm) cubic ZnS nanocrystals (quantum dots--QDs) doped with 0.2% mol ${\text{Mn}}^{2+}$, self-assembled into a mesoporous structure. The EPR data analysis shows that…