Materials Literature
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Nowadays, poly (vinyl alcohol) (PVA) hydrogels are being studied for several biomedical applications such as joint replacement, wound dressings and controlled drug-releasing devices, among others. Reinforced PVA hydrogels show good mechanical properties and are a suitable option to replace cartilages. Furthermore, the…
Two hexanuclear Cu(I) clusters [Cu(I)(3)(4-ptt)(3)](2)·3DMF·3H(2)O (1) and [Cu(I)(4-ptt)](6)·8DMF·7H(2)O (2) (4-Hptt = 5-(pyridin-4-yl)-1H-1,2,4-triazole-3-thiol, DMF = N,N-dimethylformamide), were synthesized and characterized. Compounds 1 and 2 with similar coordination environments are isomers, but their detailed s…
Brownmillerite SrCoO(2.5) (010) thin films synthesized by pulsed laser deposition became amorphous when reduced at low temperatures by CaH(2), indicating that the infinite-layer structure with the square planar Co(2+)O(4) configuration is unstable. Ferromagnetic and conducting perovskite SrCoO(3) epitaxial thin films,…
Chemically synthesized "pro-sensitizers" release the sensitizer in the presence of lipase or β-glucosidase, triggering a significant luminescence response from a lanthanide based hydrogel.
The comparison between physical properties and chemical structures of several polysiloxanes was studied at initial state and upon ageings. Techniques such as densimetry, gel permeation chromatography, FTIR spectroscopy, thermogravim- etric analysis coupled with IR spectroscopy and the new tool photo-DSC were used to g…
Flax fibers, along with a number of other plant fibers, are rich in cellulose, are relatively cheap, have low density, are highly biodegradable, and are easily renewable with the potential for many composites' reinforcement. However, natural fibers are hydrophilic in nature and covered with waxy substances and pectin,…
Short jute fiber (2 - 3 mm) reinforced polypropylene PP-based composites (20% fiber by weight) were fabricated using compression molding and the mechanical properties were evaluated. Tensile strength (TS), tensile modulus (TM), elongation at break (Eb%), flexural strength (FS), flexural modulus (FM), impact strength (…
Graphite nanosheets have been grown on Ni foam by radio-frequency plasma-enhanced chemical vapor deposition, which are used as substrates for electrodepositon of Ni(OH)2 with a porous and 3D nanostructure. The Ni foam/graphite nanosheets/Ni(OH)2 electrode has a high specific capacitance of 1667 F g−1 and the specific…
Tin oxide SnO 2 films were prepared by RF magnetron sputtering. The effects of oxygen partial pressure percentage on the SnO 2 property have been investigated to obtain relatively high-resistivity SnO 2 films which could be used as buffer layers to optimize the performance of CdTe/CdS solar cells. The oxygen partial p…
In this article, based on first-principles calculations, we systematically study functionalization induced diamondization of graphene bilayer and graphene-BN hybrid bilayer. With single-side functionalization, the diamondized structures are magnetic semiconductors. Interestingly, if both sides of the bilayer are funct…
We present a study of electrostatic gating of VO2 thin films in ionic-liquid-based electric double-layer transistor geometry. Devices were fabricated by lithographic patterning of VO2 thin films as channel on sapphire substrates, ionic liquid as gate dielectric, and Au as gate/source/drain electrode, respectively. A s…
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…