Materials Literature
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Sulphur-doped carbon was synthesized using a thiophene-based twin monomer. While tetra(thiophene-2-ylmethoxy)-silane can be converted into sulphur containing nanocomposites, which lead to microporous sulphur-doped carbon, it is possible to produce additional mesopores by the use of templates. Thus, a variety of sulphu…
Ammine aluminium borohydride system is found to release >12 wt% pure H(2) below 120 °C via a combined strategy of changing the coordination number and adopting mixed cations.
Shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS), which acts as the next generation of advanced spectroscopy, expands the versatility of surface-enhanced Raman spectroscopy (SERS). Here we present a facile one-step method to prepare functionalized core-shell nanoparticles for selective detection of tr…
The first example of metal hydrazinoborane, LiN2H3BH3, and its hydrazine borane adduct LiN2H3BH3·2N2H4BH3 were synthesized with their crystal structures successfully determined. The metal hydrazinoboranes exhibit dramatically improved dehydrogenation over the pristine hydrazine borane (N2H4BH3) with nearly complete de…
Raman spectroscopy has been already established as a powerful tool for characterizing the different types of carbon nanostructures, ranging from the highly ordered two-dimensional graphene and one-dimensional nanotubes, down to disordered materials, like nanographite and charcoal. Here we focus on the recent advances…
Hollow CuO nanospheres have been prepared via a reduction reaction of copper ions on porous Si nanowires combined with calcination in air and uniformly anchored on their surfaces. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) were employed to char…
A 1,3-dipolar cycloaddition reaction taking place quantitatively between propiolic acid "guests" and azide functions previously attached to binding sites within the cavity of a {Mo(132)}-type Keplerate reproducibly gives a 2 : 1 ratio of 1,4- and 1,5-triazoles.
A hierarchically micro/nanostructured alumina gel film was prepared by using a simple sol-gel process; upon self-assembly of fluoroalkyl phosphonic acid, a "non-sticky" superhydrophobic surface was obtained.
meso-Anisyl boron dipyrrins (BODIPYs) 1-6 containing one to six bromines at the pyrrole carbons have been synthesized by treating meso-anisyl dipyrromethane with 'n' equivalents of N-bromosuccinimide in THF at room temperature followed by oxidation with DDQ, neutralization with triethylamine and further complexation w…
The impact of sulfur-poisoning on the electrochemistry of anode-supported solid oxide fuel cells (SOFCs) has been analyzed via electrochemical impedance spectroscopy. Therefore, single cells manufactured by Forschungszentrum Jülich (FZJ) were operated with a reformate fuel. During operation, contents of H 2 S (0.1 and…
Hyperbranched and linear conjugated polysiloles incorporating arylene ethynylene subunits (6 and 7) were synthesized by the Sonogashira reaction. The two polymers possess unusual phenomena of PL, with gradual addition of water in their THF solution, the intensity of PL firstly increased and then decreased, this may be…
Although scientists have been studying nanoscience phenomena for many decades, technological developments in the second half of the twentieth century provided valuable tools that permitted researchers to study and develop materials in the nanoscale size range and helped formalize nanotechnology as a scientific field.…
For the purpose of increasing the coercivity of the Nd-Fe-B sintered magnets without Dy substitution, we explored a possibility of enhancing the coercivity by grain size reduction of the sintered body by employing the starting powder with an ultimately small particle size. To produce Nd-Fe-B alloy powder with such a s…
We describe the transport properties of mesoscopic devices based on the two dimensional electron gas (2DEG) present at the LaAlO3/SrTiO3 interface. Bridges with lateral dimensions down to 500 nm were realized using electron beam lithography. Their detailed characterization shows that processing and confinement do not…
Highly conductive graphene sheets were prepared by coating graphene oxide with polydopamine (PDA) followed by reduction with hydrazine. Polyacrylonitrile/graphene nanocomposites prepared via solution blending exhibit high electrical conductivities at very low graphene loadings owing to the good exfoliation and relativ…
Recent advances in graphene nanoribbon (GNR) electronic devices provide a concrete context for developing simulation methods, comparing theories to experiments, and using simulations to explore device physics. We present a review on modeling of graphene nanoribbon devices, with an emphasis on electronic and magnetores…
Friction has a direct relation with the energy efficiency and environmental cleanliness in all moving mechanical systems. To develop low friction coatings is extremely beneficial for preserving not only our limited energy resources but also the earth’s environment. This study proposes a new design for low friction car…
Inspired by naturally occurring superhydrophobic surfaces, a number of approaches have been attempted to create specific surfaces having both micro- and nanoscale textures. To bring the artificial superhydrophobic surfaces closer to practical applications, a widely usable and simpler method that is systematically deri…
We report a new strategy for shape control over the synthesis of gold nanoparticles (AuNPs) by using a photoresponsive surfactant based on a modified seed growth method. Owing to photoresponsive properties of the azo group, the designed surfactant, N(1),N(3),N(5)-tris[(4'-azobenzene-4-sulphonic acid)phenyl]benzene-1,3…
Using a range of optical techniques, we have probed the nature of orientational order in a thermotropic bent-core liquid crystal, which features a shape-persistent molecular architecture designed to promote a biaxial nematic phase. In the upper range of the nematic phase (enantiotropic regime), dynamic light scatterin…