Materials Literature
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Liposomes have been widely used delivery systems, particularly relevant to the development of cancer therapeutics. Numerous liposome-based drugs are in the clinic or in clinical trials today against multiple tumor types; however, systematic studies of liposome interactions with solid or metastatic tumor nodules are sc…
Two new dithiazolylethenes, 1a {1,2-bis[5′-methyl-2′-(2′′-pyridyl)thiazolyl]perfluorocyclopentene} and 2a {1,2-bis[4′-methyl-2′-(2′′-pyridyl)thiazolyl]perfluorocyclopentene}, have been synthesized. Their photochromic behavior has been fully investigated in solution as well as in the crystalline phase. They display bot…
The modelling of dry knitted reinforcements for structural composite parts at the mesoscopic scale is essential to establish simulation tools related to shaping processes. Deformation modes of such structures are linked to the textile's manufacturing process, resulting in an anisotropic heterogeneous structure. This o…
1,10-Phenanthroline-appended cholesterol-based gelators (1 and 2) and their non-gelling reference compounds (1′ and 2′) were synthesized. It was shown that the gelation abilities of 1 and 2 are quite different, in spite of their structural similarity. Compound 1 can form gels with various kinds of organic solvents, wh…
Crystalline thin films of vanadium pentoxide have been deposited by dc sputtering using a vanadium target. Depending on the power applied, two set of samples thick characterized by a 00l or an h 00 preferred orientation have been synthesized. Investigation of their respective electrochemical properties as positive ele…
The lamellar phase in colloidal suspensions of positively charged platelets of layered double hydroxides (LDHs) was studied with synchrotron small angle X-ray scattering and optical observations.
The adhesion of plated metals on top of chemically treated epoxy layers for build-up purposes was examined. Specifically, the influence of wet chemical pretreatments on the adhesion of plated copper to epoxy polymer is investigated. This adhesion is related to the surface roughness of the polymer and the chemical comp…
A solid-oxide fuel cell/gas turbine hybrid system for auxiliary aerospace power is analyzed using 0-D and 1-D system-level models. The system is designed to produce 440kW of net electrical power, sized for a typical long-range 300-passenger civil airplane, at both sea level and cruise flight level (12,500m). In additi…
A wet chemistry procedure which couples chemical functionalization and a dispersion—centrifugation cycle was applied to the dissolution and purification of as-prepared electric-arc produced single-walled carbon nanotubes (SWNTs). It is validated that K2S2O8 treatment generates hydrophilic groups such as carboxyl and h…
The family of bismuth titanate, Bi4Ti3O12 (BIT) layered-structured ferroelectrics materials is attractive from the viewpoint of their application as electronic materials such as dielectrics, piezoelectrics and pyroelectrics, because they are characterized by good stability of piezoelectric properties, a high Curie tem…
We describe new developments in hybrid conjugated materials containing metal complexes or nanoparticles. Phosphino-oligothiophenes are useful building blocks for metal-containing polymers and oligomers, and as cross-linkable surface passivating groups for metal nanoparticles. These materials may find application as ne…
Diatom frustules have been identified as potential candidate materials for nanotechnology applications. However, for successful engineering applications, their mechanical properties must be fully determined. Toward this end, indentation hardness and elastic properties frustules of the centric diatom Coscinodiscus conc…
The tetraazamacrocyclic ligand TRITA(4-) is intermediate in size between the widely studied and medically used 12-membered DOTA(4-) and the 14-membered TETA(4-). The kinetic inertness of GdTRITA(-) was characterized by the rates of exchange reactions with Zn(2+) and Eu(3+). In the Zn(2+) exchange, a second order [H(+)…
The single crystals of a closed form spirooxazine spiro[azahomoadamantane-isoquinolinoxazine] were found for the first time to undergo photocoloration processes consistent with photochromism in the single crystalline phase.
In a diblock copolymer system the free energy field depends nonlocally on the monomer density field. In addition there are two positive parameters in the constitutive relation. One of them is small, with respect to which we do singular perturbation analysis. The second one is of order 1, with respect to which we do bi…
Surface quality, geometry confinement, internal integrity, and mechanical properties are of great importance for the applications of microstructures fabricated by localized electrochemical deposition. This study shows that the copper microcolumn grown by resuming the anode and cathode to a given separation when the sh…
Degrees of orientation of main chains and imide rings were quantitatively estimated for spin-coated films of six kinds of aromatic polyimides (PIs) using polarized attenuated total reflection (ATR)/Fourier transform infrared (FT-IR) spectroscopy. The degrees of chain orientation parallel to the film planes are signifi…
Lamellar-bridged silsesquioxanes were obtained by the acid-catalysed hydrolytic condensation of a series of bissilylated organobridged molecular precursors. It was found that exploiting cooperative effects between the molecular interactions created by long hydrophobic hydrocarbon chains and the H-bonding between urea…
The Ni60Nb15Ti15Zr10 glassy alloy was developed as a separator material for a proton exchange membrane fuel cell (PEMFC). The corrosion rate of the glassy alloy in sulfuric acid was approximately 3 digits lower than SUS316L. A precise groove forming of the glassy alloy can be achieved by hot-pressing in the supercoole…
Secondary ammonium salts namely dicyclohexylammonium 4-nitrocinnamate 1, 3-nitrocinnamate 2, 2-nitrocinnamate 3 and the corresponding benzoate salts namely dicyclohexylammonium 4-nitrobenzoate 4, 3-nitrobenzoate 5 and 2-nitrobenzoate 6 have been prepared and scanned for gelation. Salts 1 and 2 display excellent gelati…