Materials Literature
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The polyaniline emeraldine salt of paratoluenesulfonic acid (PAni-pTS) is dispersed in polyvinylbutyral coatings adherent to an iron surface. Such dispersions are shown to effectively inhibit corrosion-driven coating delamination (cathodic disbondment) when 5% w/v (0.86 M) aqueous chloride electrolyte contacts a penet…
Magnetic carbon nanotube (CNT) composites have been successfully fabricated by employing a one-step approach, in which ferrocene decomposed at high temperatures of 350 °C, 425 °C, 500 °C, and transformed into iron oxides to deposit on CNTs. The resulting products were characterized by X-ray diffraction, X-ray photoele…
The gadolinium(iii) complex of S-SSSS-NO(2)BnDOTMA exhibits water exchange kinetics that are optimal for use in high relaxivity or targeted contrast agents. However, the synthesis of this ligand is hampered by the steric encumbrance imparted upon the cyclen ring by the nitrobenzyl substituent. A relatively simple modi…
PART I: INTRODUCTION. Chapter 1: Creation and Development of Thermoplastic Elastomers, and Their Position Among Organic Materials (E. Marechal). Chapter 2: Polycondensation Reactions in Thermoplastic Elastomer Chemistry: State of the Art, Trends, and Future Developments (E. Marechal). PART II: POLYESTER-BASED THERMOPL…
Bismuth-doped is used as red phosphors with very high efficiency and appropriate emission wavelength. These red phosphors have been synthesized by homogeneous coprecipitation and solid-state reaction without any flux, which may be used in the field of white LEDs (light-emitting diodes). The crystal structure of bismut…
Rapid and highly sensitive trace analysis of cyanide water pollutant in an alligator teeth-shaped PDMS microfluidic channel was investigated using surface-enhanced Raman spectroscopy. Compared with previously reported analytical methods, the detection sensitivity was enhanced by several orders of magnitude.
We present here the experimental results from research conducted on negative refraction and focusing by a two-dimensional (2D) left-handed metamaterial (LHM) slab. By measuring the refracted electromagnetic (EM) waves from a LHM slab, we find an effective refractive index of -1.86. A 2D scanning transmission measureme…
Mesoporous carbons with high surface area, large pore diameter, and enhanced mesoporosity have been synthesized by a soft colloidal template route with various aniline/cetyltrimethylammonium bromide (CTABr) ratios and investigated as an electrocatalytic support for methanol oxidation by cyclic voltammetry. The mesopor…
A single solid oxide fuel cell (SOFC) with a La 0.8 Sr 0.2 Ga 0.83 Mg 0.17 O 2.815 (LSGM) electrolyte 200 μ m thick with H 2 as fuel gave 1.4 W ∕ cm 2 peak power density at 800 ° C . With a La 0.4 Ce 0.6 O 1.8 (LDC) buffer layer 20 μ m thick between the electrolyte and the two electrodes, a 30 -day test showed essenti…
The photodynamic activities of a porphyrin-C60 dyad (P-C60) and its metal complex with Zn(II) (ZnP-C60) were compared with 5-(4-acetamidophenyl)-10,15,20-tris(4-methoxyphenyl)porphyrin (P), both in homogeneous medium-bearing photooxidizable substrates and in vitro on the Hep-2-human-larynx-carcinoma cell line. This st…
The incorporation of thioether groups in the structure of a Mn12 single-molecule magnet, [Mn12(O12)(L)16(H2O)4] with L = 4-(methylthio)benzoate, is a successful route to the deposition of well-separated clusters on native gold surfaces and to the addressing of individual molecules by scanning tunnelling microscopy.
Bifunctional periodic mesoporous organosilicas with large heterocyclic bridging groups and mercaptopropyl surface ligands located on the pore walls are reported. These materials were synthesized by co-condensation of tris[3-(trimethoxysilyl)propyl]isocyanurate, 3-mercaptopropyltrimethoxysilane and tetraethyl orthosili…
The oxygen reduction reaction (ORR) was experimentally investigated using the Koutecky-Levich approach on AA2024-T3, high-purity aluminum, and high-purity copper. The ORR on a heterogeneous AA2024-T3 electrode exhibited charge-transfer, mixed, and mass-transfer-controlled regimes that were successfully modeled in each…
A novel surfactant-encapsulated terbium-substituted heteropolyoxotungstate complex [L1]13[Tb(SiW11O39)2].30H2O (SEC-1) bearing mesomorphous groups was successfully prepared by the ionic self-assembling route, exhibiting characteristic thermotropic liquid-crystalline behavior.
In the rapidly growing field of tissue engineering, the functional properties of tissue substitutes are recognized as being of the utmost importance. The present study was designed to evaluate the effects of static mechanical forces on the functionality of the produced tissue constructs. Living tissue sheets reconstru…
This article deals with the aspects of interfacial and surface characterization of natural fibers and their composites. Vegetable fibers and their composites have attracted the attention of scientists worldwide because of their favorable properties. The different chemical modifications of natural fibers and characteri…
This article is focused on mesoporous hybrid organic–inorganic materials prepared in the presence of structure-directing agents. We attempt to show that they are currently the best supports for exploring polyfunctional materials, which can provide a route to interactive materials. We define interactive materials as na…
also serve as a basis for advanced study or specialized investigation of the theory and practice of the unit operations and unit processes covered.
Rehydration of Mg-Al hydrotalcite in the liquid phase using ultrasounds or a high stirring speed leads to nanoplatelets with surface areas of 400 m(2) g(-1), displaying catalytic activities in aldol condensations up to 8 times higher than the best catalytic system reported in the literature.
Calix[4]arene derivatives supported on monolayer protected gold clusters show a remarkable enhanced binding efficiency towards quaternary ammonium salts in homogeneous solution of apolar solvents with respect to the corresponding unsupported hosts.