Materials Literature
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We examine the stability of lamellar stacks in the presence of an electric field, , applied normal to the lamellae. Calculations are performed with self-consistent field theory (SCFT) supplemented by an exact treatment of the electrostatic energy for linear dielectric materials. The calculations identify a critical el…
An unexpected, mild, efficient bromination ring-opening method has been developed for convenient synthesis of various novel biladienes or brominated porphyrins by controlling the amounts of NBS used.
Trapping effects in CdSiO 3 :In 3+ long afterglow phosphor based on photoluminescence (PL) and thermoluminescence (TL) curves are studied. The results of TL show that two intrinsic defects associated with peaks at 346 and 418 K appear in the undoped CdSiO 3 phosphor; whereas only one strong cadmium vacancy V'' Cd defe…
Although weak rocks (meaning the domain of hard soil/soft rock) occur frequently in construction projects all over the world, only few, and mostly unsatisfactory, durability testing methods exist. In various construction projects it became evident that especially slake durability of weak rocks varies strongly from spo…
Ultrathin Langmuir-Schaeffer (LS) films were fabricated from blends of regioregular poly(3-hexylthiophene) (P3HT) and highly monodispersed dodecanethiolate-capped gold nanoparticles (Au NPs) mixed in varying weight ratios. The morphology of the ultrathin films was investigated by UV-visible absorption spectroscopy, at…
We report a simple and rapid aqueous route to crystalline nanoparticles of PbS and CdS using single-source precursors and a conventional household pressure cooker.
Organo-vermiculites with large d-spacing, advantageous for the synthesis of polymer nanocomposites, were prepared by exchanging the mineral inorganic cations for quaternary alkylammonium ions. The interlayer Mg2+ of the pristine vermiculite was exchanged by Na+ in advance to enhance the exchange with the organic catio…
Abstract In this paper, the mechanisms of scale formation from oilfield water are presented. An accurate model for predicting the scaling phenomena due to mixing of incompatible waters, changes in thermodynamic, kinetic and/or hydrodynamic conditions in oilfield operations is suggested. This model can predict scaling…
This work demonstrates the ability of sol-gel derived materials to support the differentiation of neuronal cells, and investigates the physiochemical interactions between the surface and extracellular matrix proteins as a mediator of the effects of surface features on differentiation. We have applied fluorescence reso…
BACKGROUND: Discovery of tumor-selective antibodies or antibody fragments is a promising approach for delivering therapeutic agents to antigen over-expressing cancers. Therefore it is important to develop methods for the identification of target- and function specific antibodies for effective drug delivery. Here we de…
Abstract Cellulose is a biodegradable polymer produced sustainably in large quantities by nature. It has been used by mankind for centuries because of its favorable properties, but suffers disadvantages such as the high cost of production and limited processibility. For example, it cannot be melted and is only soluble…
One of the most serious problems in fluorescence bio-imaging is the limitation of observation time due to color-fading of the fluorescence probes and damages on the bio system, both of which are caused by the excitation ultraviolet irradiation. This problem can be solved by using an upconversion emission of rare-earth…
The organoclays Wyoming montmorillonite (SWy-1, Mon), W. R. Grace vermiculite (Ver), and Tung-Wei (Tw) soil montmorillonite were prepared to sorb or remove chlorophenoxy propionic acids (CPA) pollutants such as 2,4-dichlorophenoxy acid (2,4-DP), 2,4,6-tri chlorophenoxy acid (2,4,6-TCP), and pentachlorophenoxy propioni…
The pyrochlore based bismuth stannate, Bi2Sn2O7, is a material with important applications in catalysis and gas sensing. The thermodynamically stable α phase has 352 atoms in the unit cell and is one of the most complex oxide crystal structures to have been solved by powder diffraction. We have performed a full atomic…
Reaction of 2,3-dioxochlorins with benzeneselenic anhydride (BSA) results in the formation of unusual ring-contracted azetine derivatives that further react with BSA to afford porpholactones.
Novel bent‐shaped mesogens based on substituted naphthalene‐2,7‐diol, possessing a double bond at the end of terminal branches, have been synthesized and characterized. A variety of banana‐mesophases has been found, depending on the type of lateral substitution. Increasing the length of the alkyl chain leads to the ap…
The BLM-system for studying the electrophysical properties of bilayer lipid membranes (BLM) was applied to investigate interactions between polyamidoamine (PAMAM) dendrimers and lipid bilayers. The cationic PAMAM G5 dendrimer effectively disrupted planar phosphatidylcholine membranes, while the hydroxyl PAMAM-OH G5 an…
New amphiphilic comb-dendritic block copolymers were developed as building blocks that self-assemble into stable vesicular structures with narrow size distribution.
Anodic polarization tests were performed in 0.9% NaCl and 1% lactic acid solutions to characterize the relationship between the corrosion behavior and the microstructures of cast Ti-Ag (5-40% Ag) alloys. The anodic polarization curves for the Ti-Ag alloys up to 17.5% Ag were similar to those for pure titanium in both…
对 Escherichiacoli 和克积极的葡萄球菌 aureus 微生物的 polyaniline (PAni ) 的优秀抗菌剂性能在黑暗、可见的轻条件下面被表明了。在 PAni 分子和细菌之间的静电的坚持可以为 PAni 的抗菌剂反应起一个很重要的作用，由于我们的调查，进行 PAni ，它的 composites/blends 被相信作为抗菌剂代理人的一种新类型有用，为改进人的健康和生活环境的自我清洗以及多功能的材料。