Materials Literature
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We demonstrate that gold nanoparticles can become catalytically active for the electrochemical hydrogen oxidation reaction by a sonication treatment. Experimental data and theoretical calculations indicate that the activity arises from the supercooled molten state of gold nanoparticles which are enriched with coordina…
Three supramolecular complexes of FePc and CoPc with pyrazine in crystalline form have been obtained. In the case of FePc the biaxial ligation by pyrazine with the formation of FePc(pyz)2 (I) has been observed, whereas in the case of CoPc, depending on the thermal conditions, mono- and biaxial ligation by pyrazine are…
A series of nunchaku-like molecules containing both an azo chromophore and a rigid biphenylene unit (AZBP-X, X = CA, CN, and NT) was designed and synthesized in this study. The azo compounds were amorphous solids at room temperature with glass transition temperature (Tg) values of 98, 87, and 79 °C for AZBP-CA, AZBP-C…
The present study shows that alumina nanotopography affects monocyte/macrophage behavior. Human mononuclear cells cultured on alumina membranes with pore diameters of 20 and 200 nm were evaluated in terms of cell adhesion, viability, morphology, and release of proinflammatory cytokines. After 24 hours, cell adhesion w…
The fabrication of high performance organic thin-film transistors based on hexamethylenetetrathiafulvalene is reported. The evaporated polycrystalline films on polystyrene-treated substrates were highly oriented along the b-axis, where the grains are composed of three-dimensional brickwork stacks of molecular planes l…
Surface-enhanced Raman scattering (SERS)-active Ag substrates were popularly employed for evaluating the structural situation of analytes because SERS-active Ag substrates can demonstrate more significant SERS effects than Au and Cu substrates. However, the stability of SERS-active Ag substrates is an issue of concern…
The unique attributes of water are discussed, focusing on its physical interaction forces that operate and between water molecules and other materials to which it can establish a close contact, such as cellulose or paper. Selected scientific principles of the water interactions relevant to water damage focusing on wat…
Poly(ε-caprolactone)s of controlled molecular weight and low molecular weight distribution were prepared via anionic ring-opening polymerization using a tetra-functional initiator. The prerequisite for crosslinking was achieved by end-capping of the arms with acrylate groups. Novel biodegradable polyester resins were…
Heats of adsorption Q of n-alkanes C6–C9 on ZrO2 modified with gold and nickel nanoparticles were determined experimentally. The Q values were found to be higher on average by 7 kJ/mol on the modified samples as compared to the pure support. Density functional theory with the PBE functional and the pseudopotential for…
The synthesis of new phthalocyanine iron(ii) (FePc) based coordination complexes , their structural characterization by multinuclear NMR ((1)H, (13)C, (15)N, (31)P, (57)Fe), and their use as improved sensitive and cheap optical NO(2) sensors is described. delta((15)N) and delta((57)Fe) values obtained via HMQC NMR met…
In contrast to the conventional bottom‐up syntheses of boron nanostructures, a unique top‐down and greener synthetic strategy is presented for boron nanorods involving nontoxic boron oxide powders ultrasonically smelted in liquid lithium under milder conditions. The product was thoroughly characterized by energy dispe…
Morphological selection of the self-assembled nanostructure of zwitterionic porphyrins between nanorod and nanosheet by the small displacement of the peripheral anionic position is demonstrated based on the J-aggregates of zwitterionic porphyrin isomers, meso-tetrakis(5-sulfonatothienyl)porphyrin diacid and meso-tetra…
Flower-like LaPO4:Ln3+ (Ln = Ce, Tb) hierarchical architectures composed of polygon prisms originated from the same center have been prepared by direct precipitation in solution-phase under moderate conditions. CTAB and citric acid were chosen as surfactant and chelating reagent, respectively. It is found that the add…
Nanocrystalline powders of the composition Pb(Zr 0.52 Ti 0.48 )O 3 were obtained by Mechanical alloying (high‐energy ball milling). X‐ray diffraction studies show that these compounds are completely into the perovskite phase. Detailed studies of electrical and mechanical properties of PZT as a function of temperature…
Poly(2-methacryloyloxyethyl phosphorylcholine) (poly(MPC)) was grafted from various polymeric substrates to prepare protein-resistant materials. The poly(MPC) chain length was adjusted via the ratio of monomer to sacrificial initiator in solution. The surfaces were characterized by water contact angle and X-ray photoe…
A promise of nano-structured solid electrolytes (SEs) to present enhanced ionic conductivity necessary for low-temperature solid oxide fuel cell applications arises from the hypothesis that interfaces in these materials accelerate the ionic transport. However an in-depth knowledge of ionic dynamics in the interfacial…
We study the problem of the Zitterbewegung of electrons in a bilayer graphene system with a perpendicular magnetic field stimulated by a short Gaussian laser pulse. We investigate the response of electrons in the occupied Landau level and find that the dipole moment shows an evident oscillatory behavior while the prod…
Vapor-grown carbon fiber (VGCF) reinforced aluminum matrix composites were fabricated by plasma sintering method, and their mechanical and thermal properties were investigated. The aluminum powders with average diameters of 1 μm, 3 μm and 30 μm were chosen as the matrix. The monolithic aluminum blocks were also fabric…
A new nanostructure of double-layer thin films (DLTFs) has been introduced to Bi2Se3 as thermoelectric films through a facile one-step and low-temperature solution route. The Bi2Se3 DLTFs consist of a (001) orientational inner layer and a (110) orientational outer layer with controllable thicknesses. The controllable…
Systematic explorations of new phases in the Ln(III)-V(V)-Se(IV)-O systems by hydrothermal syntheses led to four new quaternary compounds, namely, Nd(2)(V(V)(2)O(4))(SeO(3))(4)·H(2)O (1), Ln(V(V)O(2))(SeO(3))(2) (Ln = Eu 2, Gd 3, Tb 4). The structure of Nd(2)(V(V)(2)O(4))(SeO(3))(4)·H(2)O features a 3D framework compo…