Materials Literature
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The synthesis and crystal structure of 1-deoxy- d -lactose is described, as is its use as an additive in the crystallization of d -lactose. This has resulted in the formation of αβ- d -lactose for the first time at room temperature. Single-crystal analysis shows differences between this analysis and the structure prev…
The magnetic transition coupled with the martensitic transition in Ni 50 Mn 34 In 16 alloy is studied through magnetization measurements. The field-induced martensite to austenite transition has been studied in detail, and the method of using inverted Arrott's plots ( H / M versus M 2 plots) to distinguish between the…
Abstract Propargyl cellulose with regioselective functionalization pattern was synthesized by nucleophilic displacement reaction of 6‐ O ‐toluenesulfonyl ester of cellulose (degree of substitution, DS 0.58) with propargyl amine. The novel 6‐deoxy‐6‐aminopropargyl cellulose provides an excellent starting material for t…
Phosphoryl transfer is a key reaction in many aspects of metabolism, gene regulation, and signal transduction. One prominent example is the phosphoenolpyruvate:sugar phosphotransferase system (PTS), which represents an integral part of the bacterial sugar metabolism. The transfer between the enzymes IIA (Glc) and IIB…
A one-dimensional model, called generalized cylinder (GC), is employed to analyze the diffusion−reaction problem in catalytic pellets of different shapes and nonlinear kinetics. The fitting parameter (σ) of the GC model was adjusted by matching the behavior of the actual pellet at high reaction rates. The errors of th…
By using the density functional theory method, we calculate the 13 C NMR isotropic chemical shifts of the semiconducting and semimetallic infinite single-walled carbon nanotubes (SWNTs). We find that the 13 C chemical shifts of SWNTs with the diameter smaller than 1.4 Å can be classified into two distinct groups accor…
The development of adhesive as well as antiadhesive surfaces is essential in various biomaterial applications. In this study, we have used a multidisciplinary approach that combines biological and physicochemical methods to progress in our understanding of cell-surface interactions. Four model surfaces have been used…
Carbon-nanotube resonance is clearly observed at ≈10–13 GHz. After binding of streptavidin to a biotinylated nanotube (see image), the electrical resonance frequency of the sensor exhibits a dramatic shift to a lower frequency. Simulation results suggest that the resonance frequency shift can be ascribed to a change i…
Ab initio local spin density approximation calculations were performed to study the magnetic properties of hydrogenated boron nitride nanotubes (H-BNNTs). It is found that the adsorption of a single H atom on the external surface of BNNT can induce spontaneous magnetization in the H-BNNTs, whereas no magnetism is obse…
Abstract We report on a systematic study of the influence of laser irradiation on the Raman spectra of HiPco‐produced single‐wall CNTs. Specifically, we have examined the Raman response of bundled CNTs to: i) laser power density; ii) exposure time and iii) photon energy (1.96 and 2.33 eV). Our results show that irreve…
A theoretical approach based on a tight-binding model is developed for studying the effects of finite concentration gas adsorption (for what are known as diatomic, triatomic and quadratomic gas molecules in the general forms denoted by XY, XY 2 and XY 3 , respectively) on electronic properties of armchair graphene nan…
GaAs wafers have been decorated with Ag nanoplates through direct galvanic reaction between aqueous AgNO 3 solutions and GaAs, resulting in Ag nanoplate/GaAs composite surfaces with varying hydrophobocity after the Ag nanoplates are coated with self-assembled monolayers of alkyl thiol molecules. By carefully controlli…
Structural complexity inherited from a microbial synthesis of glycolipids was translated into unique poly(sophorolipid) biomaterials. ROMP polymerization of natural diacetylated lactonic sophorolipids gave a high molecular weight polymer with asymmetric bola-amphiphilic repeating units. The poly(sophorolipid) chain al…
Abstract Conducting polypyrrole (PPy)‐montmorillonite (MMT) clay nanocomposites have been synthesized by the in situ intercalative polymerization method. The PPy‐MMT nanocomposites are characterized by field‐emission scanning electron microscopy (FE‐SEM), transmission electron microscopy (TEM), X‐ray diffraction (XRD)…
Semiconductor nanoparticles or quantum dots are being increasingly utilized as fluorescent probes in cell biology both in live and fixed cell assays. Quantum dots possess an immense potential for use in multiplexing assays that can be run on high content screening analysers. Depending on the nature of the biological t…
Abstract A series of bioactive amphiphilic peptide derivatives that contain the RGD (Arg‐Gly‐Asp) sequence have been designed and prepared by the standard solid‐phase peptide synthesis (SPPS) technique. The influence of the molecular structure and pH change on the morphology of the amphiphilic peptide derivatives in a…
We perform a systematic study of electronic structures and potential profiles based on the ab initio calculations for LaAlO 3 /SrTiO 3 (001)-stacking thin films [(TiO 2 –SrO) 2 (AlO 2 –LaO) n and (SrO–TiO 2 ) 2 (LaO–AlO 2 ) n ( n =1,2,3,4,5)] with and without atomic position relaxation. To eliminate artifacts from per…
Abstract Novel luminescent electrospun (ES) fibers have been successfully prepared from a conjugated rod–coil block copolymer, poly[2,7‐(9,9‐dihexylfluorene)]‐ block ‐poly(methyl methacrylate) (PF‐ b ‐PMMA) using a single‐capillary spinneret. Experiment results indicate that PF‐ b ‐PMMA ES fibers prepared from THF, TH…
A fruitful synthesis: A facile and robust approach is reported for synthesizing raspberry-like core/shell biocomposites (see image) by the co-assembly of bionanoparticles with poly(4-vinylpyridine). This method allows the formation of hierarchically assembled composite colloids using both spherical and rodlike bionano…
Abstract The effect of zeolite 5A on the crystalline behavior of polypropylene (PP) in PP/β‐nucleating agent system was investigated with X‐ray diffractometer (XRD), differential scanning calorimeter (DSC), and polarized light microscope (PLM) in this study. Zeolite 5A has less effect on crystalline phase of PP/β‐nucl…