Materials Literature
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The combination of Ni2+, dipropylenetriamine (dipn), and [Cr(CN)6]3- affords the cyanide-bridged bimetallic assembly, [Ni(dipn)]3[Cr(CN)6]2.3H2O (1). This compound crystallizes in cubic space group Pa, with a = b = c = 20.9742(7) A and Z = 8. A three-dimensional network is constructed on the basis of a Cr8Ni12 cubane…
Fractionation effects and the formation of structured domains are investigated in polydisperse systems of attractive spherocylinders with the help of Monte Carlo simulations. For sufficiently high attractive interaction strength and pressure, the large rods in the system aggregate and form a highly ordered hexatic mon…
Different types of cyclodextrins (CDs) have been tested as mediators for the water phase transfer of organic-capped CdS nanocrystals (NCs), and alphaCD has been demonstrated to be the most effective system. The formation of a complex based on alphaCDs and colloidal NCs has been considered to be responsible for the pha…
This study evaluated the formation of chitosan-50:50 poly-lactic-co-glycolic acid (PLGA) blend matrices using controlled-rate freezing and lyophilization technique (CRFLT). An emulsion system was used in the presence of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC), a cellular component, as a stabilizer. Blended…
The phase behavior of lattice model dendrimers of generations from 2 to 5 in solution was studied using grand canonical Monte Carlo simulations. The critical properties were calculated using multihistogram reweighting techniques combined with mixed field finite-size scaling. Power law exponents were obtained for the c…
Abstract The self‐assembly of a lamella‐forming blend of a diblock copolymer and its respective homopolymers on periodically patterned substrates is investigated by a concerted experimental and theoretical approach. The substrate pattern consists of square arrays of spots that preferentially attract one component of t…
A zeroth-order dendrimer was formed using a tridentate bridging ligand, 2,4,6-tri-4-pyridyl-S-triazine, and the redox-active trinuclear ruthenium cluster Ru3O(OAc)6(CO)(py)(H2O). The electronic properties of this dendrimer were probed using cyclic voltammetry. IR spectroelectrochemistry was performed at both low (-30…
Four different organosilanes (octyltrihydroxysilane, butyltrihydroxysilane, aminopropyltrihydroxysilane, and thiolpropyltrihydroxysilane) adsorbed at a reconstructed Zn-terminated polar ZnO (0001) surface are studied via constant temperature (298 K) molecular dynamics simulations. Both single adsorbed silane molecules…
The influences of hydrostatic pressure and biasing electric field on the dielectric properties and phase behavior of a single crystal of the perovskite compound $\mathrm{Pb}({\mathrm{Sc}}_{0.5}{\mathrm{Nb}}_{0.5}){\mathrm{O}}_{3}$, (PSN) have been investigated. On cooling from high temperatures, the crystal first ente…
We have investigated the molecular dynamics of syndiotactic poly(methyl methacrylate) well above the glass transition by combining quasielastic neutron scattering and fully atomistic computer simulations. The incoherent scattering measured by backscattering on a sample with deuterated ester methyl groups has revealed…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTInduction of Helicity in Poly(n-hexyl isocyanate) with Terminal Chiral ResiduesG. Yogendra Nath, Shashadhar Samal, Sang-Yoon Park, C. N. Murthy, and Jae-Suk LeeView Author Information Department of Materials Science and Engineering…
Abstract Systematic DFT calculations have been carried out on the lacunary α‐Keggin polyoxometalate derivatives [PW 11 O 39 ] 7– , [XW 9 O 34 ] n – (X = Al III , Si IV , Ge IV , P V , As V , and Sb V ), [XW 9 M 2 O 39 ] n – , and [XW 9 M 3 O 40 ] n – (X = P V and Si IV , M = Mo VI , V V , Nb V , and Ta V ) to investig…
The connection between quantum size effects and the surface plasmon resonance of metal nanoclusters is introduced and the pros and cons of in situ and ex situ cluster analysis methods are outlined. A new method for estimating the size of nanoclusters is presented. This method combines core/shell cluster synthesis, UV-…
The solubility of salicylamide in methanol, acetonitrile, acetic acid, acetone, water, and ethyl acetate has been determined between (10 to 50) °C. The onset melting temperature and enthalpy of fusion has been determined by differential scanning calorimetry to 138.7 °C and 29.0 kJ·mol -1, respectively. Only the monocl…
The photochemical properties of organic ligands on the surface of nanocrystalline CdSe particles were examined. A number of thiols carrying a substituted cinnamate tail was synthesized. In solution, these cinnamate compounds undergo light-induced (374 nm) E-Z isomerization, followed by a nonphotolytic lactonization to…
The adsorption of monolayer and multilayer benzene on the Ag(111) surface was characterized using temperature programmed desorption (TPD). TPD spectra revealed two broad peaks at approximately 205 and approximately 150 K at submonolayer coverage and a sharper, multilayer peak at 140 K. Analysis of the coverage-depende…
The structural, electrical and dielectric properties of the spinel ferrite system ZnxCo1−xFeAlO4 (x = 0.2–0.5) have been studied by means of various experimental techniques. Polycrystalline samples of this series have been prepared by the double sintering ceramic method. The structural parameters such as the lattice c…
Epoxidation of single-walled carbon nanotubes (SWNTs) may be carried out by the reaction of SWNTs with either trifluorodimethyldioxirane or 3-chloroperoxybenzoic acid; the resulting O-SWNTs are spectroscopically similar to those formed by ozonolysis. Quantification of the epoxide substituents is possible through the c…
An overview of the CuI/IIY material is performed on the basis of the results obtained during the last 5 years on their structure (nature of the Cu species, siting, coordination …), their use and reactivity, based on TPR, XRD and various ex situ and in situ spectroscopies such as XAS, IR and EPR. A brief summary of pre…
Processing composites of carbon nanotubes into nanotube continuous fibers (NCFs) is an effective way of manipulating the anisotropic properties of the single-walled carbon nanotubes (SWNTs) as it becomes less difficult to transform the SWNTs into an aligned configuration when they are confined in a small diameter fibe…