Materials Literature
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Abstract Single crystals of two ternary thio‐germanates containing rare‐earth metals, Ln 4 (GeS 4 ) 3 ( Ln = Ce ( I ), Nd ( II )), have been isolated from the reaction of anhydrous rare‐earth trichloride ( Ln Cl 3 ) and ternary sodium thio‐germanate (Na 2 GeS 3 ) in evacuated quartz ampoules. We have determined the cr…
Siloxane polymers possess a unique set of properties that makes them highly suitable for optical applications. Our data present some of these properties, namely refractivity, dielectric properties, transmittance characteristics, and flexibility, for a variety of poly(dimethylsiloxane)s obtained by equilibrium ring-ope…
Abstract A spectral Galerkin method in the spatial discretization is analyzed to solve the Cahn‐Hilliard equation. Existence, uniqueness, and stabilities for both the exact solution and the approximate solution are given. Using the theory and technique of a priori estimate for the partial differential equation, we obt…
Abstract Chemical reduction of [1,2,5]thiadiazolo[3,4‐ c ][1,2,5]thiadiazole ( 2 ) with 1,1,2,2‐tetrakis(dimethylamino)ethene ( 3 ) leads to the [ 3 ] 2+ [ 1 2 ] 2– salt ( 4 ) whose X‐ray crystal structure reveals diamagnetic π‐dimers of the [1,2,5]thiadiazolo[3,4‐ c ][1,2,5]thiadiazolidyl radical anion ( 1 ). The int…
We investigate the kinetics of self-assembly by means of Brownian dynamics simulation based on a idealized fluid model (two ‘sticky’ spots on a sphere) in which the particles are known to form into dynamic polymer chains at equilibrium. To illustrate the slow evolution of the properties of these self-assembling fluids…
A high resolution coherent x-ray diffraction experiment has been performed on the charge-density wave (CDW) system K0.3MoO3. The 2kF satellite reflection associated with the CDW has been measured with respect to external dc currents. In the sliding regime, the 2kF satellite reflection displays secondary satellites alo…
New soluble and linear aromatic polyamide chains were produced by condensing 4-aminophenylsulfone with isophthaloyl chloride in dimethylacetamide as a solvent under an inert atmosphere. HCl produced as a byproduct was removed from the reaction mixture by precipitating with a stoichiometric amount of triethylamine. A c…
Modification and control of surface function on porous materials have been a very promising and appealing area of chemistry. In this paper, the reason as to why it is impossible to generate a strong basicity on silica and titania is explored in detail, and consequently, a new strategy was adopted to overcome this obst…
Transparent oxyfluoride glasses and β - PbF 2 nanocrystals containing glass-ceramics were prepared with varying Eu 3+ content (0.3, 0.4, 0.5 and 0.6%). The effect of Eu 3+ content on the preparation of glass-ceramics was investigated. From differential scanning calorimetry, the T x –T g ( T x —temperature of the onset…
Abstract Composite nanoparticles were prepared and characterized as a sustained delivery system for paclitaxel, an anticancer drug. Gold nanoparticles were used as building blocks for constructing the composite nanoparticles. An ionic interaction between the anionic gold nanoparticles and cationic chitosan was induced…
A top-gated single-wall carbon nanotube is used to define three coupled quantum dots in series between two electrodes. The additional electron number on each quantum dot is controlled by top-gate voltages allowing for current measurements of single, double, and triple quantum dot stability diagrams. Simulations using…
Self-assembled nanoparticles of cholesterol-modified O-carboxymethyl chitosan (CCMC) were prepared to be used as a novel carrier for paclitaxel (PTX) in this study. CCMC-6.9 was synthesized by the covalent conjugation of cholesterol to O-carboxymethyl chitosan with the succinyl linkage and the degree of substitution (…
Abstract The synergistic toughening effect of nucleating agent (NA) and ethylene–octene copolymer (POE) on polypropylene was studied in the present work. Two different nucleating agents, such as α‐form nucleating agent 1,3 : 2,4‐bis (3,4‐dimethylbenzylidene) sorbitol (DMDBS, Millad 3988) and β‐form nucleating agent ar…
The effects of reaction temperature (873−1223 K), carbon sources (CH 4, C 2 H 2, C 2 H 4, and C 2 H 6 ), and the amount of catalyst (2.5−20 g) on the physical properties (tube diameter, conversion, volume expansion, intensity ratio of the D- and G-band peaks ( I D / I G )) of multiwalled carbon nanotubes (MWCNTs) in a…
Indium tin oxide (ITO) nanofibers were successfully prepared via an electrospinning method, followed by annealing at 400 °C. Mixed solutions of ITO nanoparticle sol and polyethylene oxide (PEO) were used as precursors of the nanofibers. The PEO decomposed during annealing to yield ITO fibers. The fibers were character…
This work demonstrates the fabrication of metallic nanoprism (triangular nanostructure) arrays using a low-cost and high-throughput process. In the method, the triangular structure is defined by the shadow of a pyramid during angle evaporation of a metal etching mask. The pyramids were created by nanoimprint lithograp…
The sugar-modified Schiff base ligand benzyl 2-deoxy-2-salicylideneamino-alpha-D-glucopyranoside H 2L, prepared by condensation of salicylaldehyde and the monomeric chitosan analogue benzyl 2-deoxy-2-amino-alpha-D-glucopyranoside, reacts with copper(II) acetate to form a self-assembled, alkoxo-bridged tetranuclear hom…
Nearly monodisperse CdSe quantum dots with blue emission are obtained through an oxidation approach, in which CdSe particles can be etched into smaller ones. During the oxidation process, CdSe with yellow emission (546 nm) can be rapidly oxidized to blue emission (466 nm) due to its incompletely crystallized structure…
Long-range ordered noble-metal nanocrescent arrays of different sizes and shapes have been successfully fabricated by using both nanoimprint lithography and e-beam lithography techniques. Large surface enhanced Raman scattering (SERS) enhancements in the detection of rhodamine 6G (R6G) molecules on these arrays have b…
Platelet-derived growth factor (PDGF) exerts multiple cellular effects that stimulate wound repair in multiple tissues. However, a major obstacle for its successful clinical application is the delivery system, which ultimately controls the in vivo release rate of PDGF. Polylactic-co-glycolic acid (PLGA) microspheres (…