Materials Literature
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We investigated ethanol adsorption on TiO2(110) surfaces with scanning tunneling microscopy (STM) at 78 K. The ethanol was deposited by pulse injection. The STM images show that the ethanol molecules adsorbed above Ti4+ sites formed rows in the [001] direction even in the case of multilayer adsorption. Ethanol desorbe…
We examined graphene on sapphire with various thicknesses of a gold layer. Raman maps were used to study distribution of the doping levels and stress in graphene on sapphire substrate.
We report an environmentally-friendly approach to the synthesis of hybrids based on porous graphene and metal nanoparticles. The nitrogen-doped porous graphene (N-PG) and Pd nanoparticles decorated N-PG (Pd/N-PG) was synthesized by a plasma method. The N-PG was characterized by X-ray photoelectron spectroscopy and Ram…
Bis(diphenylphosphino)alkanes quantitatively react with excess 1-bromododecane to prepare novel phosphonium gemini surfactants with spacer lengths ranging from 2 to 4 methylenes (12-2/3/4-12P). Dodecyltriphenylphosphonium bromide (DTPP), a monomeric surfactant analog, was readily water soluble, however, in sharp contr…
Herein we report on the facile preparation of brominated SWCNTs based on two complementary reductive activation routes. The respective brominated SWCNTs are highly reactive and can be used in nucleophilic substitution reactions and represent versatile starting materials for the generation of sidewall functionalized SW…
A new oligomer having fluorenylene and quinolinylene groups was straightforwardlysynthesized by Suzuki reaction and proven to be readily soluble in common organicsolvents. The chemical structure of the copolymer was confirmed and characterized by 1H nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR),d…
Nanoscale farmland-like surfaces of NbO <sub>2</sub> nanorods with multi-growth directions were synthesized and purple-blue photoluminescence and low-field emissions were shown.
Creation of hierarchical pores is achieved by introducing self- and extra-porogenes in MOF-based porous carbons, which leads to promising electrode materials for supercapacitors.
Two series of Cd-Ln clusters: nano-drum [Ln₈Cd₂₄L₁₂(OAc)₄₈] and nano-double-drum [Ln₁₂Cd₄₄L₂₀Cl₃₀(OAc)₅₄] (Ln = Nd and Yb) were prepared using a flexible Schiff base ligand bearing two aryl-Br groups. Chloride (Cl(-)) ions, together with the interactions of Br with other electronegative atoms, play a key role in the f…
Redox active peptides synthesized <italic>via</italic> selenoester mediated native chemical ligation with a propensity to self-assemble in aqueous medium. A gel–sol transition of self-assembled peptide in a reducing environment makes it a versatile candidate for the development of functional biomaterials.
The article deals with the creation of models for the analysis of plastic zones generation in ductile cast iron. The aim is the study of the microplasticization process near the graphite particles border. In creating the graphite particle model there is randomly chosen shape and orientation of the particle. The basic…
With the initial motivation of optimizing hydrogen storage in beryllium nanocrystals, we have thoroughly and systematically studied the structural, cohesive, and electronic properties of Ben and BenHxn (n = 2-160, x = 0.1-2.4) nanoparticles as a function of both size (n) and hydrogen content (x), using density functio…
Magnetic nanoparticles (MNPs) have great potential in biomedical applications because of their magnetic response offers the possibility to direct them to specific areas and target biological entities. Magnetic separation of biomolecules is one of the most important applications of MNPs because their versatility in det…
We present a simple template carbonization method to produce nanoporous carbons in which potassium biphthalate and magnesium powder serve as the carbon source and hard template, respectively. It reveals that increasing the carbonization temperature can lead to an increase in crystallinity but porosity and the resultan…
Biodegradable copolymers of <sc>l</sc> -lactic acid and ε-caprolactone were prepared in SFBAILs: the effect of ILs and the mechanism.
The luminescence of semiconductor nanostructures is strongly dependent on their size, dimensions, morphology, composition, or defects, and their band emissions can be properly and selectively tailored through the rational manipulation of these parameters during material growth. Using spatially-resolved cathodoluminesc…
As the increasing demands of compact and space-saving electronics, capacitors with high energy-storage density are eagerly desired. One of the greatest challenges in the development of new high energy density materials is to increase dielectric permittivity. In this present work, we present some first results relative…
A 3-D cellular automaton finite difference (3-D CAFD) model to predict the solidification grain structure and the microsegregation was developed. In the present model, a new approach to calculate the solute concentration distribution was developed. Moreover, the CA cell including the grain boundary was newly defined.…
Plasma Electrolytic Oxidation (PEO) is a surface treatment for the production of ceramic oxide coatings with great properties, such as high wear and corrosion resistance, on metal substrates, particularly aluminum and magnesium alloys. Formation of PEO coatings involves complex processes and mechanisms that are diffic…
Graphene platelets (GnPs) were surface modi- fied with a long-chain surfactant B200, and then com- pounded with polymethyl methacrylate (PMMA). B200 provided an anchor into GnPs and a bridge into the matrix, thus creating molecular entanglement between matrix and GnPs. The interface modification promoted the dispersio…