Materials Literature
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The boron nitride (BN) nanotube has a very wide band gap and can shield the nanowire encapsulated inside its cavity from outside interference. Our calculations indicate that transition metal wires can be inserted inside a variety of zigzag BN nanotubes exothermically. In particular a cobalt wire and the BN tube intera…
Abstract A thermally induced shape memory polymer based on epoxidized natural rubber (ENR) was produced by curing the ENR with 3‐amino‐1,2,4‐triazole as a crosslinker in the presence of bisphenol‐A as a catalyst. Dynamic mechanical and tensile analysis was conducted to examine the variation of glass transition tempera…
A covalently assembled monolayer of 5,10,15-{ p -[9-methoxy-three(oxyethylene)]phenyl}-20-( p -hydroxyphenyl) porphyrin molecules was fabricated on silica substrates already functionalized with a covalent 4-ClCH 2 C 6 H 4 SiCl 3 monolayer. The surface chemical characterization was carried out by angle resolved X-ray p…
Abstract The structural, electric and electronic properties of copolymers derived from mixtures of N ‐methylpyrrole and 3,4‐ethylenedioxythiophene (EDOT) with various concentration ratios have been investigated and, additionally, compared with those of the corresponding homopolymers. The electropolymerization kinetics…
Alkylketene dimer (AKD), a kind of wax, has been known to form fractal surfaces spontaneously and show super water-repellency. Such formation of water-repellent and fractal surfaces was also found in this work for triglycerides. Since the crystal phase transitions of these waxes were well studied, we studied the forma…
A stable 1:1 host-guest complex is formed between a silicon(IV) phthalocyanine conjugated axially with two permethylated beta-cyclodextrin units and a tetrasulfonated porphyrin. The complex exhibits a light-harvesting property and works as an efficient photosensitizing system, killing HT29 human colon adenocarcinoma c…
The association of amylose-primer surfactants was controlled by changing the amphiphilicity with a chain-elongation reaction triggered by the addition of phosphorylase. By using this property, the micelle-to-vesicle transition of mixed lipid/ primer systems can be controlled.
Likes attract: Site-specific recognition of the nanophase-separated surface of a PEOm-b-PMA(Az)n film (PEO=polyethylene oxide, PMA(Az)=polymethacrylate with azobenzene-based liquid-crystalline side-chain) by hydrophilic and hydrophobic gold nanoparticles (Au NPs) was studied. The hydrophilic and hydrophobic Au NPs wer…
The NMR spectra of 19F and 53Cr have been obtained at low temperatures in a heterometallic substituted antiferromagnetic (AF) ring Cr7Cd with an S=3/2 ground state and compared with the spectra in a homometallic Cr8 AF ring with an S=0 ground state. From the analysis of the spectra one can derive directly model indepe…
Graphene, a single sheet of graphite, has attracted tremendous attention due to recent experiments which demonstrate that carriers in it are described by massless fermions with linear dispersion. In this Brief Report, we consider the possibility of Wigner crystallization in graphene in the absence of an external magne…
Abstract Multi‐walled carbon nanotube (MWNT)‐reinforced polyimide nanocomposites were synthesized by in situ polymerization of monomers in the presence of acylated MWNTs. The acyl groups associated with the MWNTs participated in the reaction through the formation of amide bonds. This process enabled uniform dispersion…
The mechanical performance of a novel antifouling and fouling-release coating, based upon hyperbranched fluoropolymer-poly(ethylene glycol) amphiphilic crosslinked networks (HBFP-PEG), has been investigated thoroughly before and after swelling in water. It is shown that the elastic modulus ( E ) depends on the relativ…
High-quality multi-walled carbon nanotubes (MWCNTs) were efficiently synthesized on the CaCO 3 supported Fe−Co catalyst with catalytic chemical vapor deposition method using acetylene as carbon source. The relationship between the catalyst structure and the carbon nanotube growth was systematically studied by using mu…
Tapered ZnO nanorod, herein called nanoneedle, arrays have been grown on ZnO-coated silicon substrate by a hydrothermal downward growth process. The ZnO seed layer facilitated the growth of aligned nanorods. The nanoneedles were grown with the substrate placed flush with the surface of the reaction solution and facing…
Abstract Gold nanoparticles (Au NP ) with carboxyl groups on their surface were used in combination with PAH for the layer‐by‐layer coating of CaCO 3 microparticles, followed by the dissolution of the CaCO 3 core. SEM, TEM, and confocal microscopy are used to characterize the hybrid nanoparticles/polyelectrolyte capsu…
Results of temperature-dependent magnetic susceptibility and powder x-ray diffraction (XRD) measurements on ${\mathrm{Ni}}_{2}{\mathrm{Mn}}_{1.05}{\mathrm{Ga}}_{0.95}$ and ${\mathrm{Ni}}_{2.13}{\mathrm{Mn}}_{0.87}\mathrm{Ga}$ magnetic shape memory alloys are compared. The transformation behavior of these two alloys is…
Ever being a large curiosity, a series of simple "planar tetracoordinate carbon (ptC)" molecules have been recently characterized by experiments. Incorporation of such exotic ptC units into the assembled molecular materials, which will bridge the isolated clusters in molecular beams and the potential solid materials,…
We study thermal rectifying effect in two-dimensional systems consisting of the Frenkel Kontorva lattice and the Fermi-Pasta-Ulam lattice. It is found that the rectifying effect is related to the asymmetrical interface thermal resistance. The rectifying efficiency is typically about two orders of magnitude which is la…
Nanoaperture arrays in a silver film were quantitatively evaluated, for the first time, to determine the absolute Raman scattering enhancement factors as a function of aperture lattice spacing using a nonresonant analyte. The arrays, with 200 nm diameter apertures and varying spacing in a 50 nm thick silver film, resu…
Abstract Fully crosslinked, stable poly[cyclotriphosphazene‐ co ‐(4,4′‐sulfonyldiphenol)] (PZS) microspheres have been prepared via the polycondensation between hexachlorocyclotriphosphazene and 4,4′‐sulfonyldiphenol by precipitation polymerization. The diameter of the PZS microspheres ranged from 0.6 to 1.0 µm with t…