Materials Literature
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Abstract The present article reports the preparation and characterization of fluoroelastomer/multi‐walled nanotube hybrid nanocomposites prepared by conventional rubber mixing using a two‐roll mill. The morphology of the resulting hybrid nanocomposites were characterized by X‐ray diffraction (XRD), scanning (SEM) and…
Using the five-site transferable intermolecular potential (TIP5P) we perform molecular dynamics simulations to investigate the relationship between the excess entropy and anomalies of water. We find that the two-body excess entropy is an ideal quantity to predict the regions of structural, dynamic, and thermodynamic a…
Silver metal nanoparticles (Nps) are extensively used in different areas of research and technology due to their interesting optical, thermal and electric properties, especially for bare core and core-shell nanostructures with sizes smaller than 10 nm. Since these properties are core-shell size-dependent, size measure…
Eleven potential polyhydroxybutyrates (PHB) producers were successfully screened from treated palm oil waste water using acetate as sole carbon and energy sources and on nitrogen limiting media with Nile Blue A dye to screen for PHB accumulation. Orange fluorescence color, produced upon binding of the dye to polymer g…
The production of AlN by thermal reduction of Al 2 O 3 in a N 2 flow, with C/CH 4 as reducing agents, is investigated using concentrated thermal radiation as the energy source of high-temperature process heat. Samples were directly exposed to radiative fluxes equivalent to peak solar concentration ratios exceeding 450…
Abstract This article reports the synthesis and characterization of copolymers based on aniline and substituted anilines by using dodecylbenzene sulfonic acid as a dopant. The copolymers were soluble in organic solvents, such as methanol, ethanol, isopropanol, N ‐methylpyrrolidinone, dimethylsulphoxide, and have condu…
Abstract Natural fiber polyethylene composites containing kenaf fibers, wood flour, newsprint, and rice hulls at 25 and 50% (by weight) fiber content were sampled and studied using thermogravimetric analysis (TGA). The effects of fiber type and content, compatibilizer and heating rate on the thermal stability and degr…
Highly facile and efficient synthesis of a variety of meso-functionalized porphyrins was accomplished by PhI(OAc)(2)-NaAuCl(4) mediated direct nucleophilic substitution reactions of [5,10,15-triphenylporphyrinato]zinc(II) (Zn1) with different amines and thiophenols. When [5,15-dibromo-10,20-diphenylporphyrinato]zinc(I…
Radial elastic corrugation of multiwalled carbon nanotubes under hydrostatic pressure is demonstrated by using the continuum elastic theory. Various corrugation patterns are observed under a pressure of several GPa, wherein the stable cross-sectional shape depends on the innermost tube diameter D and the total number…
Moisture transmission properties are most important for fabric comfort. We have studied the moisture transmission properties of the plain-woven fabric produced with polyester–viscose-(PV) blended yarns. PV-blended yarns of varying blend proportion, yarn count and twist levels have been used for fabric manufacture. A t…
We report an effective method to fabricate two-dimensional (2D) periodic oxide nanopatterns using S-layer proteins as a template. Specifically, S-layer proteins with a unit cell dimension of 20 nm were reassembled on silicon substrate to form 2D arrays with ordered pores of nearly identical sizes (9 nm). Octadecyltric…
Novel hetero-pi-conjugated compounds (dibenzochalcogenaborins) with the same molecular framework, bearing a boron atom as an acceptor and chalcogen atoms as a donor, were synthesized, and systematic comparisons among these molecules were performed. X-ray crystallographic analysis of these molecules showed similar stru…
Single wall carbon nanotubes (SWNTs) have attracted attention because of their potential in a vast range of applications, including transistors and sensors. However, immense technological importance lies in enhancing the purity and homogeneity of SWNTs with respect to their chirality for real-world electronic applicat…
A realistic dynamics simulation study is reported for the photoisomerization of trans-azobenzene. The isomerization follows both n pi* (the HOMO --> LUMO) and pi pi* (the HOMO-1 --> LUMO) excitations. The simulation finds that for the pi pi* excitation, the relaxation of the S(pi pi*) state is immediately followed by…
Adsorption and oxidation of carbon monoxide over a Pd/Al2O3 catalyst layer was investigated both in gas phase and water. Both adsorption and oxidation of CO are significantly affected by the presence of liquid water. Water influences the potential of the metal particles as well as the dipole moment of the adsorbed CO…
Breiteste Schleife: Ein neuartiger Eisen(II)-Spincrossover-Komplex (siehe Schema) erzeugt eine 70 K breite thermisch induzierte Hysterese, die durch die Bildung eines 2D-Netzwerks aus Wasserstoffbrücken erklärt wird. Dies ist das erste Beispiel für einen Spincrossover-Komplex mit breiter Hysterese aufgrund eines Wasse…
Three-dimensional relief structures of CaCO 3 are formed by spontaneous two-step crystal growth on a polymer matrix in the presence of an acidic polymer. The first step is self-organization of thin-film crystals with flat surface displaying periodically changing crystallographic orientations. In the second step, the r…
Highly luminescent water-soluble InP/ZnS core−shell nanocrystals were prepared using a newly developed method that incorporates reactive phase transfer and photochemical processing. Poor-emitting InP nanocrystals (NCs, 2−4 nm) prepared solvothermally using toluene were transferred into alkaline aqueous solution contai…
The oxidative dehydrogenation (ODH) of ethane with CO 2 was successfully carried out over the Cr-based monolithic catalysts, which were prepared using FeCrAl alloy foil as support. High catalytic activity and stability can be drawn on these monolithic catalysts. For example, 66.5% ethane conversion and 99.5% ethylene…
Two glycodendrimeric phenylporphyrins were synthesized and their interaction with phospholipids was studied at the air-water interface and in liposome bilayers; such liposomes bearing glycodendrimeric porphyrin could constitute an efficient carrier for drug targeting in photodynamic therapy.