Materials Literature
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Chitosan-gold hybrid nanospheres were prepared through a direct facile approach that utilized cross-linked composite nanospheres consisting of low-molecular-weight chitosan (LWCS) and ethylenediaminetetraacetic acid (EDTA) as a precursor reaction system. EDTA was employed not only to construct the counterion interacti…
We have covalently attached multiple photoluminescent silicon nanoparticles (SNs) to streptavidin molecules. Conjugation of SNs to a target protein is achieved using the multistage photoassisted procedure. In a first step, the terminal hydrogen in the freshly prepared SNs is substituted with an alkane monolayer that s…
CaCO 3 superstructures with complex forms and hierarchical surface textures were mineralized in the presence of peptide type block copolymer poly(ethylene glycol)- b -poly( l -glutamic acid) (PEG- b -pGlu) as a crystal growth modifier in dimethyl formamide (DMF) solution. Spindle-like CaCO 3 crystals with a rather smo…
The ins and outs of it: The external and internal surfaces of mesoporous materials can be modified independently by exploiting the wetting behavior of the pores modified with a hydrophobic activated monolayer. To demonstrate the principle, porous silicon photonic crystals were modified with ligands promoting cell adhe…
Abstract The purpose of this study is to propose a correlation between IR spectra and the urea fraction of waterborne polyurethanes (PUs) to investigate the side reaction, that is, isocyanate–water reaction, during polymerization. This method is based on the decomposition of the spectrum in amide I range, that is, 160…
A general and facile method to prepare monodisperse, water dispersible PEM-coated and naked emulsions (5CB, silicone, and paraffin oil) is demonstrated. The presented approach paves the way for the formation of monodisperse emulsions of various materials of controlled size and surface functionality.
A series of three novel ZnPc-C60 conjugates (Pc=phthalocyanine) 1 a-c bearing different spacers (single, double, and triple bond) between the two electroactive moieties was synthesized and compared to that of ZnPc-C60 conjugate 2, in which the two electroactive moieties are linked directly. The synthetic strategy- tow…
In this paper, we present the influence of temperature on the Kirkendall effect-related evolution of coaxial ZnO/Al 2 O 3 one-dimensional heterostructures based on a solid-state reaction. Controllable fabrication of spinel ZnAl 2 O 4 -based nanotubes and porous nanowires can step-by-step be achieved from ZnO/Al 2 O 3…
The effects of temperature, pH, and salt concentration on the layer-by-layer (LBL) deposition of sodium poly(styrene sulfonate) (PSS)/poly[2-(dimethylamino)ethyl methacrylate] (PDEM) were investigated by use of a quartz crystal microbalance with dissipation (QCM-D). At pH 4, the frequency change (Deltaf) gradually dec…
Abstract Novel three dimensional cubic Fm 3 m mesoporous aluminosilicates (AlKIT‐5) with very high structural order and unprecedented loadings of Al in the silica framework have been successfully prepared for the first time by using non ionic surfactant as a template in a highly acidic medium. The obtained materials h…
By using acetyl tributyl citrate (ATBC) as the plasticizer of poly(lactic acid) (PLA) and carbon black (CB) as conductive filler, electrically conductive polymer composites (CPC) with different CB and ATBC contents were prepared. FTIR revealed that the interaction existed between PLA/ATBC matrix and CB filler and ATBC…
Oxygen and argon plasmas were used to modify multiwalled carbon nanotubes (CNTs) to improve their interfacial interaction with subsequently deposited Pt nanoparticles. In contradistinction to what was found in the case of highly oriented pyrolytic graphite (HOPG), X-ray photoelectron spectroscopy (XPS) confirms the in…
This paper reports on the characterization and preliminary comparison of gold nanoparticles of differing surface modification and shape when used as extrinsic Raman labels (ERLs) in high-sensitivity heterogeneous immunoassays based on surface enhanced Raman scattering (SERS). ERLs are gold nanoparticles coated with an…
BACKGROUND: Drug eluting stents prevent vascular restenosis but can delay endothelial healing. A rabbit femoral artery model of stenosis formation after vascular injury was used to study the effect of intramural delivery of alpha(v)beta(3)-integrin-targeted rapamycin nanoparticles on vascular stenosis and endothelial…
Building bridges: Two arylimido derivatives of hexamolybdate, containing unprecedented bridging imido ligands, have been synthesized and structurally characterized. Their 1H NMR and UV/Vis spectra distinguish them from related terminally coordinated derivatives. Such compounds extend the range of organoimido polyoxome…
We report the first scanning tunneling microscope (STM) investigation, combined with density functional theory calculations, to resolve controversy regarding the bonding and structure of chlorine adsorbed on Au(111). STM experiments are carried out at 120 K to overcome instability caused by mobile species upon chlorin…
We report methods to predict the intrinsic aqueous solubility of crystalline organic molecules from two different thermodynamic cycles. We find that direct computation of solubility, via ab initio calculation of thermodynamic quantities at an affordable level of theory, cannot deliver the required accuracy. Therefore,…
Despite the utility and promise of carbon nanotubes (CNTs), their production is generally based on empirical principles. There are only a few CNT formation models that predict the dependence of their growth on various synthesis parameters. Typically, these do not incorporate a detailed mechanistic consideration of the…
Discrete dislocation dynamics simulations in three dimensions are performed on micro-sized bending beams and the results are compared with experiments. A strong size dependence of the flow stress σf (or bending moment) is found. The flow stress scales approximately inversely with the beam thickness t. The simulations…
The phase diagram gadolinium fluoride - lutetium fluoride was determined by differential scanning calorimetry (DSC) and X-ray powder diffraction analysis. Both pure components undergo a reversible first order transformation to a high temperature phase. The mutual solubility of both components is unlimited in the ortho…