Materials Literature
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The aim of this work is to prepare N-succinyl-chitosan (Suc-Chi) and measure physical-chemical properties for Suc-Chi as excipients. Suc-Chi were prepared via ring-opening reactions with succinic anhydride in Dimethyl Sulfoxide system. The physical-chemical properties of Suc-Chi, such as the degree of substitution (DS…
The effects of sulfur dioxide (SO(2)), sodium chloride (NaCl), and peroxymonosulfate or oxone (2KHSO(5).KHSO(4).K(2)SO(4) with active ingredient, HSO(5)(-)) on the sonochemical removal of nitric oxide (NO) have been studied in a bubble column reactor. The initial concentration of NO studied ranged from about 500 to 10…
The structure and thermoelectric properties of boron doped nanocrystalline Si0.8Ge0.2 thin films are investigated for potential application in microthermoelectric devices. Nanocrystalline Si0.8Ge0.2 thin films are grown by low-pressure chemical vapor deposition on a sandwich of Si3N4∕SiO2∕Si3N4 films deposited on a Si…
Liquid crystalline nanoparticles (LCNP) formed through lipid self-assembly have a range of attractive properties as in vivo drug delivery carriers. In particular they offer: a wide solubilization spectrum, and consequently high drug payloads; effective encapsulation; stabilization and protection of sensitive drug subs…
The encapsulated copper atoms inside a defected single-walled carbon nanotube escape from the tube through the defect hole as the temperature increases. This causes the partially confined copper nanowires (CNWs) to undergo special structural transformations from a solid to a distinguishable helical layered structure a…
Abstract In co‐continuous conductive polymer composites (CPCs) designed for heat generation by the Joule effect, thermal conductivity k m of the electrically insulating matrix is the limiting factor to obtain good heat dissipation. To prevent the establishment of non‐desirable high temperature gradient in heating elem…
Abstract The profound effect on flame retardancy of the blending of small amounts of clay with polymers is believed to be due to the formation of a protective clay‐rich char barrier on the surface of the pyrolyzing polymer during combustion. The mode of formation of this barrier is discussed, in view of recent results…
The first part of this article reviewed the applications of nanostructures derived from Pluronic block copolymers that have potentials in the field of biomedical sciences. Pluronic block copolymers are used not only in drug delivery systems but also in gene and cancer therapies. In the second part, the chemical modifi…
High-resolution X-ray diffraction reciprocal space mapping (HRXRD-RSM) was applied for the structural characterization of epitaxial BiFeO 3 thin film grown on SrRuO 3 -coated (001) SrTiO 3 single crystal substrate with a variety of film thicknesses ranging from 15 to 500 nm. Distinguishing monoclinic structure from rh…
Effects of copper salts containing different anions (SO(4)(2)(-), Cl(-), and NO(3)(-)) on the self-assembly of a designed peptide EAK16(II)GGH with affinity for Cu(2+) have been investigated. The peptide secondary structure, self-assembled nanostructures, and surface activity were observed to depend strongly on the ty…
Calorimetric data of primary crystallization is usually interpreted in the framework of the Kolmogorov [Dokl. Akad. Nauk SSSR 1, 355 (1937)], Johnson and Mehl [Trans. AIME 135, 416 (1939)], and Avrami [J. Chem. Phys. 7, 1103 (1939); 8, 212 (1940); 9, 177 (1941)] (KJMA) theory. However, while the KJMA theory assumes ra…
Abstract By optimizing seeding techniques and plasma parameters for deposition, nanocrystalline diamond (NCD) films were deposited on different sorts of substrates with varying parameters such as temperature and methane content. Results of this optimization process were analysed by SEM, XRD, Raman, and transmission me…
Foaming properties of monoglycerol fatty acid esters that have different alkyl chain lengths were studied in different nonpolar oils, namely liquid paraffin (LP 70), squalane, and squalene. The effect of the hydrocarbon chain length of the surfactant, the concentration, the nature of the oil, and the temperature on th…
An overview is given on nucleation phenomena of Pb(Zr,Ti)O3 (PZT) thin films on Pt(111)-based substrates. Emphasis is given on in situ growth methods, particularly in situ reactive sputtering from three metallic targets. Growth of PZT thin films is discussed from the point of view of the PbOx–TiO2 phase diagram, PbO v…
Photodynamic therapy is a method for treating several diseases, most notably cancer. Recent synthetic activity has created a number of phthalocyanines for potential use as photodynamic therapy photosensitizers. In this mini-review article, the background and the concepts in the development of new phthalocyanines are i…
The present report encompasses a thorough review of drug delivery to the brain with a particular focus on using drug carriers such as liposomes and nanoparticles. Challenges in brain drug delivery arise from the presence of one of the strictest barriers in vivo-the blood-brain barrier (BBB). This barrier exists at the…
Purpose To investigate the effect of halide ions on the corrosion inhibition of mild steel using polyvinyl alcohol (PVA) in H 2 SO 4 at 30‐60°C and to study the mechanism of action. Design/methodology/approach The corrosion rates were determined using the gravimetric (weight loss) and gasometric (hydrogen evolution) t…
Prestorage drying operations of high-burnup fuel may make Zircaloy-4 (Zry-4) fuel cladding more susceptible to failure, especially during fuel handling, transport, and post-storage retrieval. In particular, hydride precipitates may reorient from the circumferential to the radial direction of the cladding during drying…
The optoelectronic properties of semiconductor quantum-dot (QD) solids depend on the electronic structure of the building blocks and their interactions. Disorder may affect the coupling on a local scale. We have measured the density of states of 2D arrays of PbSe QDs site by site using scanning tunneling spectroscopy.…
A series of push-pull chromophores built around thiophene-based pi-conjugating spacers and bearing various types of amino donors and cyanovinyl acceptors have been analyzed by means of UV-vis-NIR, IR, and Raman spectroscopic measurements in the solid state as well as in solution. The intramolecular charge transfer (IC…