Materials Literature
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The use of metal ion-induced polymerizations of a ditopic ligand offers a facile route to the preparation of organic/inorganic hybrid materials. Such metallo-supramolecular polymers potentially offer the functionality of the metal ion along with the processibility of a polymer. We report, herein, the preparation of ge…
In the present study, we show the isolation and characterization of the protein haemoporin, which constitutes the second most abundant protein fraction in the haemolymph of the marine gastropod Aplysia californica. Although Aplysia is commonly used to investigate the molecular basis of learning, not much is known abou…
Chlorine gas evolution was investigated by bubbling O 2 gas into molten CaCl 2 at temperatures higher than 1173 K, although a thermodynamic analysis shows almost no progress of the reaction 2CaCl 2 + O 2 = 2CaO + Cl 2 . To break the thermodynamic limitation, chlorine gas slightly evolved was quickly removed from the r…
Abstract Multifunctional molecules were designed to produce microgels with specific structures. Both static light scattering and dynamic light scattering were employed to determine the fractal dimension of the microgels. The protein, avidin, was strongly bound to four biotin moieties. Biotin was attached covalently to…
Single bubble sonoluminescence (SBSL) is realized in air-saturated water at ambient pressure and room temperature. The behavior is similar to SBSL in degassed water, but with a higher spatial variability of the bubble position. A detailed view on the dynamics of the bubbles shows agreement between calculated shape sta…
We have reported the relaxation dynamics of charge carriers in mixed alkali fluoride glasses of compositions 50ZrF4–10BaF2–2YF3–3AlF3–(35−x)LiF–xNaF; where 0⩽x⩽35. We have analyzed the relaxation data for these mixed alkali glasses, taken in the frequency range from 10 Hz to 2 MHz and in the temperature range from roo…
We report the electrical and thermal transport properties, including electric resistivity (ρ), Seebeck coefficient ( S ) and thermal conductivity (κ) of icosahedral Al 70 Pd 22.5 Re 7.5 quasicrystals in the temperature range between 10 and 300 K. Four Al 70 Pd 22.5 Re 7.5 samples with a resistivity ratio ranging from…
Neutron scattering measurements were carried out for liquid Se, liquid Te, and liquid Te50Se50. The results are discussed in the context of semiconductor-to-metal transition. As to liquid Te50Se50, the vibrational modes show a remarkable change when the semiconductor-to-metal transition occurs by temperature increase.…
In this work, the ground states of Cd i O i clusters ( i = 1−9, 12, 15) are studied. Ringlike structures have been found to be the global minima for clusters as large as i = 7, and three-dimensional structures (clustertubes and spheroids) are observed to be the global minima for larger ones ( i = 8, 9, 12, 15). This t…
Strong analogies between inorganic porous materials and polymeric swollen gels have been demonstrated. The thermoporosimetry technique, based on the shift of the transition temperature for a confined solvent with respect to free solvent, has been applied in determining the degree of swelling in elastomers. Prior to th…
ZnO microrods (whiskers) were fabricated by a simple thermal oxidation method. The morphologies of the samples were detected by the scanning electron microscope, which showed the ZnO microrods were about 30 μm long with a diameter of 1–2 μm. In the photoluminescence (PL) spectra, only the exciton related emission band…
The continuously reorientable (XY-like) ferroelectric polarization density of a chiral smectic liquid crystal is shown experimentally to produce nearly complete screening of the applied electric field in an appropriate cell geometry. This screening, combined with the expulsion of polarization charge for large polariza…
Vibrational spectroscopy using polarized incident radiation can be used to determine the orientation of X-H bonds with respect to coordinates such as crystallographic axes. The adaptation of this approach to polymer fibers is described here. It requires spectral intensity to be quantified around a 180 degrees range of…
Stacking faults containing microtwins in (111)-oriented diamond layers grown on a high-pressure high-temperature (HPHT)-synthesized diamond substrate by chemical vapor deposition start to form just on the substrate. The microtwins in the stacking faults form on the {1̄11} plane, not on the (111) substrate plane. To ex…
Ab initio calculations of the reaction of ground-state atomic oxygen [O(3P)] with an allyl radical (C3H5) have been carried out using the density functional method and the complete basis set model. On the calculated lowest doublet potential energy surface, the barrierless association of O(3P) to C3H5 forms three energ…
Using efficient simplified continuum amphiphile models-AB dimers, A2B2 tetramers, and A4B4 octamers-as models for diblock copolymers, surfactants and liquid crystals, the phase behavior of the corresponding lamellar systems is investigated by large-scale parallelized dissipative particle dynamics type of molecular dyn…
Nanocomposites are realized by chemical reduction whereby the conducting magnetic particles of Fe–Co alloy are generated within the insulating ferrimagnetic BaCo2Fe16O27 or Ba2Co2Fe12O22 hexaferrite matrix. Transmission electron microscopy revealed that metal nanoparticles precipitate coherently as thin flakes along t…
Intramolecular photoinduced charge-separation and charge-recombination processes of tetrathiafulvalene-(spacer)-naphthalenediimide-(spacer)-tertrathiafulvalenetriads (TTF-(sp)-NIm-(sp)-TTF), which have been designed to change the length and kind of the spacers, have been investigated in various solvents by time-resolv…
Pressure–composition isotherms have been obtained for Ti 0.1 Zr 0.9 Mn 0.9 V 0.1 Fe 0.5 Ni 0.5 , (Ti 0.1 Zr 0.9 ) 1.1 Mn 0.9 V 0.1 Fe 0.5 Ni 0.5 , Ti 0.1 Zr 0.9 (Mn 0.9 V 0.1 ) 1.1 Fe 0.5 Ni 0.5 and Ti 0.1 Zr 0.9 Mn 0.9 V 0.1 Fe 0.55 Ni 0.55 having the C14 type hexagonal structure in the temperature and pressure range…
We show that the concentrations of the species C2 (X 1Σg+), C2 (a 3Πu), and C2H exhibit a significant increase when the argon content grows up to 95% in medium pressure (0.75 Torr) radio frequency (rf) (13.56 MHz) produced C2H2 (1%)/H2/Ar plasmas of interest for the synthesis of nanodiamond thin films within plasma en…