Materials Literature
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Azobenzene derivatives containing polymers deform when exposed to light with a wavelength in the principle absorption band associated with trans−cis isomerization of the azobenzene derivative molecule. When such polymers cover a metallic nanoparticle exposed to light near its surface plasmon resonance, which also happ…
The structural and elastic properties of BiMnO(3) with monoclinic (C 2/c) and orthorhombic (Pnma) ferromagnetic (FM) structures have been studied by first-principles calculations within LDA + U and GGA + U approaches. The equilibrium volumes and bulk moduli of BiMnO(3) phases are evaluated by equation of state (EOS) f…
Results are reviewed from a study on retention and running of water and other liquids on tilted, polymer coated surfaces. The polymer is a thermally-stripped, solvent-borne acrylic composed primarily of the monomer 2-ethylhexyl acrylate, providing a soft and viscoelastic substrate absent of contaminants. It is shown t…
Nanocomposites of novolac phenolic resin with a series of organoclays based on sodium montmorillonite exchanged with various amine compatibilizers were fabricated via melt processing. The effects of the amine structure on the resulting morphology and physical properties were investigated by employing wide-angle X-ray…
Abstract Starting with the nearly spherical endohedral M@Si 16 cage‐like clusters (M = Sc − , Ti, V + ) in their fullerene‐like isomerical form with D 4 d symmetry, we study the trends in the formation of [Ti@Si 16 ] n , [Sc@Si 16 K] n , and [V@Si 16 F] n aggregates as their size increase ( n ≤ 9). We identify special…
In this paper, we investigate the cation-exchange properties of a self-assembled hybrid material towards trivalent ions, lanthanides (La(3+), Eu(3+), Gd(3+), Yb(3+)) and Fe(3+). The bis-zwitterionic lamellar material was prepared by sol-gel process from only 3-aminopropyltriethoxysilane (APTES), succinic anhydride, an…
Single-walled carbon nanotube (SWCNT) samples were rigorously purified by high temperature oxidation, acid treatment, ultrasonication, neutralisation and filtration process. By a very simple wet chemical route, SWCNT bundles were hybridised with freshly prepared ZnS nanocrystals of average size 2.00 nm. Characterisati…
Abstract A systematic study on the surface‐enhanced Raman scattering (SERS) for 3,6‐bi‐2‐pyridyl‐1,2,4,5‐tetrazine (bptz) adsorbed onto citrate‐modified gold nanoparticles (cit‐AuNps) was carried out based on electronic and vibrational spectroscopy and density functional methods. The citrate/bptz exchange was carefull…
Abstract Adsorption of nitrogen and oxygen in nanoporous carbons (NPC) is simulated using grand canonical Monte Carlo simulations, where the Steele potential (developed for gas interactions with graphite) is used to represent gas–carbon interactions. NPC models used for the adsorption simulations are developed using a…
Hollow polyelectrolyte microcapsules prepared by layer-by-layer assembly of polyelectrolytes onto colloidal particles and subsequent core removal are investigated concerning their uptake capacity and the exchange dynamics of aromatic alcohols, that is, hydroquinone and phenol. Diffusion coefficients of the alcohols in…
The structures of many disordered materials are not ideally random, but contain structural order on the scale of 1-3 nm. However, such nanoscale order, called medium-range order, cannot be detected by conventional diffraction methods in most cases. Fluctuation transmission electron microscopy (FTEM) has the capability…
Abstract The room temperature electrical conductivity of polyaniline (PANI) was found to increase remarkably after it was heated in tetrahydrofuran (THF) with refluxing for a certain period and then doped with methanesulfonic acid (MSA). The enhanced electrical conductivity of PANI was attributed to a partially cross‐…
Abstract In this paper, a hybrid system consisting of metal nano‐particles dispersed on the surface of a dielectric layer is presented: a remote Expanding Thermal Plasma CVD system is used for the deposition of the inorganic (i.e. SiO 2 ) layers from hexamethyldisiloxane/oxygen mixtures in combination with an rf magne…
Abstract Ni 45 Co 5 Mn 36.6 In 13.4 ribbons were prepared by the melt spinning technique. They are in the austenitic state at the room temperature with a Cubic L2 1 structure and are composed of columnar grains growing perpendicular to the ribbon plane. A nearly single {001}〈100〉 cube component is formed at low wheel‐…
Development work for a compact hydrogen supply system with a thermal output of 65 kW applying ethanol as fuel was started by IMM in collaboration with Rosetti Marino, an Italian plant engineering company. The system concept is comprised of an ethanol steam reformer operated at 10 bar, water−gas shift for the reduction…
A new organic-organic nanoscale composite thin-film (NCTF) dielectric has been synthesized by solution deposition of 1-bromoadamantane and triblock copolymer (Pluronic P123, BASF, EO20-PO70-EO20), in which the precursor solution has been achieved with organic additives. We have used a sol-gel process to make a metal-i…
Layered tubes: The giant nanoporous molybdenum-oxide based polyoxometalates of the wheel and Keplerate type with unique features, which can be considered as the basis of a new type of nanochemistry and nanomaterials science and find a variety of applications, can be easily incorporated into nanotubular arrays with wel…
Hessian cloth (jute fabrics) reinforced poly(propylene) (PP) composites (45 wt% fiber) were prepared by compression molding and the mechanical properties were evaluated. Jute fabrics and PP sheets were treated with UV radiation at different intensities and then composites were fabricated. It was found that mechanical…
In this article, novel gel-forming materials based on oligomeric and polymeric electrolytes for not only water but also organic solvents, including ionic liquids, are highlighted especially the synthesis, derivatization, and physical property. The oligoelectrolytes with cationic pyridinium backbone can be very easily…
Abstract A novel poly(aniline‐ co ‐ o ‐aminophenol) (PAOA)/mesoporous silica SBA‐15 nanocomposite was synthesized and investigated for adsorption of Hg (II) from aqueous solutions of wide pH range. A chemical oxidation method was employed for polymerization of aniline and o‐aminophenol on an ordered SBA‐15 template to…