Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The current interest for natural fibers as an environmentally correct composite reinforcement has motivated the investigation of new possibilities. For instance, the fibers extracted from the petiole of the buriti palm tree were recently found to have adequate mechanical properties to reinforce polymer composites. The…
Orderly YPO4:Eu3+ olivary architectures with a length of about 8 μm and a diameter of about 5 μm have been synthesized successfully by a limited anion-exchange reaction (LAER) under hydrothermal conditions. These 3D olives in fact are composed of irregular tetragonal nanoflakes with an average size of 1500 × 1000 × 60…
Novel tetranuclear Cu(ii)-Ln(iii)-Cr(iii) complexes with oxamidate and oxalate bridges have been prepared using [Cu(L)], LnCl(3).6H(2)O and K(3)[Cr(ox)(3)] components (ox(2-) = oxalate) during the development of new multimetallic complexes as molecular magnets. Overall ferromagnetic properties have been observed in th…
The dynamics of single probe molecules on surface-tethered poly(N-isopropylacrylamide) (PNIPAM) layers is studied by fluorescence correlation spectroscopy. It is surprisingly observed that molecular surface dynamics on polymer layers is much slower than that on surfactant monolayers, despite stronger interfacial inter…
The luminescent lifetime of La2Zr2O7 and La2Hf2O7 has been determined as a function of temperature. We have shown that the luminescence of both materials can be used to determine the temperature of a surface up to 1073K. The results are qualitatively explained via multiphonon emission. Phonon energies and the number o…
Poly(amidoamine) (PAMAM) dendrimers are a family of water-soluble polymers with a characteristic tree-like branching architecture and a large number of surface groups, which have been used to immobilize a variety of therapeutic molecules for targeted drug delivery. Earlier studies showed that small cationic PAMAM-NH2…
We report the use of the RADA16‐I scaffold to mimic the ECM microenvironment and support tumor cell adherence and survival. Cellular morphology, proliferation, adhesion ability, and in vivo tumor formation were studied in the human hepatocellular carcinoma cell line HepG2 in the 3‐D RADA16‐I scaffold. No significant d…
Stable aqueous SWNT dispersion up to 92% was achieved using amino acid based amphiphiles through a structure-property investigation. The nanohybrids showed remarkable serum stability and biocompatibility to mammalian cells.
The mode of liquid crystal (LC) self-assembly of asymmetric three-arm star oligobenzoate mesogens has been investigated by torsional tapping mode AFM imaging, and by bulk and grazing-incidence X-ray diffraction. It was confirmed that the cubic liquid crystal phase has Imm symmetry and established that it consists of s…
The electrodeposition of Au–Ni alloys from near-neutral, sulfite-based electrolytes derived from a commercial bath for soft gold plating is investigated. Alloy compositions ranging from 0 to 90 atom % Ni were obtained by varying the deposition potential, with Ni content increasing with overpotential. Cathodic efficien…
The interaction of chloroform (CHCl(3)) with single-wall carbon nanotubes (SWCNT) is investigated using both first principles calculations based on Density Functional Theory and vibrational spectroscopy experiments. CHCl(3) adsorption on pristine, defective, and carboxylated SWCNTs is simulated, thereby gaining a good…
Thin films terminated with oligo(ethylene glycol) (OEG) could be photochemically grafted onto ultrathin silicon carbide layers that were generated on silicon substrates via carbonization with acetylene at 820 degrees C. The OEG coating reduced the non-specific adsorption of fibrinogen on the substrates by 99.5% and re…
π-Conjugated dendrimer-protected gold nanoparticles in stable colloidal form have been successfully prepared via simultaneous reduction of AuCl3 with oxidative polymerization of terthiophene (PT) and carbazole (PC) peripheral functionalized polyamidoamine (PAMAM) dendrimers. The hybrid dendrimer–metal materials were c…
Polyaniline (PANI) has been an effective matrix for hosting and preserving metal nanoclusters. In the case of gold, the tetrachloroaurate anion ( AuCl 4 − ) has a high affinity for the imine sites of PANI. Upon contact with PANI, AuCl 4 − is spontaneously reduced to metallic gold, but the size of the formed Au cluster…
We present a potent multifunctional molecular design concept for promoting the dispersion of carbon nanotubes (CNTs) in thermotropic liquid crystals (LCs), making CNT-in-LC dispersions of unprecedented stability possible and broadening the scope of potential applications.
Scintillating nanoparticles with a SiO2 core and a Gd2O3 shell, where either the core or the shell was doped with Eu3+, were synthesized with a solution precipitation process. Based on transmission electron microscopy (TEM) data, an ∼13 nm Gd2O3 shell was successfully coated onto ∼220 nm mono-dispersed SiO2 nanocores.…
Studies of complex permittivity and third harmonic generation were carried out for a Rochelle salt loaded porous alumina film within a temperature range from 80 to 325 K in comparison with studies of Rochelle salt single crystals. Only one peak of real part of permittivity corresponding to the lower (re-entrant) phase…
An innovative thermal analysis methodology is applied for the characterization of poly(ε-caprolactone) (PCL) nanocomposites containing layered silicates, needle-like sepiolite or polyhedral oligomeric silsesquioxane (POSS) nano-cages, aiming at assessing the key factors affecting nanofiller dispersion and nanocomposit…
Using ab initio tools, we investigate the structural and electronic properties as well as the NMR spectra of hybrid dithienylethene-naphthopyran photochromes synthesised by Frigoli and Mehl (Angew. Chem. Int. Ed., 2005, 44, 5048). All possible closed/open structures have been considered and in each case several confor…
In the last two decades, nanotechnology has been playing an increasing important role in supporting innovative technological advances to manage the corrosion steel. This paper reviews various recent patents and patent applications related to the management of steel corrosion, including the use of nanotechnology to pro…