Materials Literature
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For conventional superconductors, superconductivity is destabilized by magnetic field. However, in BETS-based two dimensional organic conductors, where BETS is bis(ethylenedithio)tetraselenafulvalene, superconductivity is induced by high magnetic fields parallel to the conducting layers. The overall features of the fi…
The structure of N,N-dimethylethylenediammonium pentachloroantimonate(III), [(CH3)2NH(CH2)2NH3][SbCl5], NNDP, was investigated at 100 and 15 K at ambient pressure, as well as at pressures up to 4.00 GPa at room temperature in the diamond-anvil cell. The stable structure at low temperatures and low pressures consists o…
A survey of crystallization conditions was carried out for 650 published protein-protein complexes in the Protein Data Bank (PDB) of the Research Collaboratory for Structural Bioinformatics (RCSB). This resulted in the establishment of a Protein Complex Crystallization Database (PCCD) and a set of configuration-space…
Liquid-phase catalytic oxidation of p -xylene to terephthalic acid was performed at 150−210 °C over Co−Mn−Br catalyst system. There was an interesting synergistic effect of cobalt and manganese catalyst. In the previous papers ( Ind. Eng. Chem. Res. 2005, 44, 261−266; 4518−4522; 7756−7760), a lumped kinetic scheme and…
DOTA-based complexes of gadolinium (Gd) bearing a thiol moiety on a propyl or hexyl arm were synthesized. It was hypothesized that these complexes would form reversible covalent linkages with human serum albumin (HSA), which contains a reactive thiol at cysteine-34. The binding constant of the hexyl complex to HSA was…
The in vivo fate of nanoparticles developed as drug delivery systems is influenced by the surface characteristics of the colloidal particles. In the present work, surface characteristics of a series of poly(isobutylcyanoacrylate) nanoparticles prepared by redox radical emulsion polymerization with polysaccharides of d…
We report the structural characterization and transport properties of highly-ordered epitaxial γ-Fe 2 O 3 thin films grown by a pure ozone-assisted molecular beam epitaxy method. X ray diffraction (XRD) measurements at a synchrotron facility indicated that the composition of films was close to that of γ-Fe 2 O 3 with…
Carbon nanosheets are a unique nanostructure that, at their thinnest configuration, approach a single freestanding graphene sheet. Temperature desorption spectroscopy (TDS) has shown that the hydrogen adsorption and incorporation during growth of the nanosheets by radio frequency plasma-enhanced chemical vapor deposit…
A review is given on theoretical studies concerning the pairing symmetry in organic superconductors. In particular, we focus on (TMTSF)$_2$X and $\kappa$-(BEDT-TTF)$_2$X, in which the pairing symmetry has been extensively studied both experimentally and theoretically. Possibilities of various pairing symmetry candidat…
Biocompatible fibers (see figure) are prepared by electrospinning branched poly(2-hydroxyethyl methacrylate) copolymers from methanol. These copolymers contain disulfide branch sites that can be cleaved using tripeptides such as glutathione. Cleavage reduces the copolymer molecular weight substantially, leading to com…
The use of X-ray crystallography to derive three-dimensional structures for structure-aided drug design (SADD) is a common activity in drug discovery today. In this process, the structures of inhibitors or other ligands of interest complexed with their macromolecular target are solved and the structural information is…
Hydrogen diffusion in single crystal and polycrystalline zinc oxide was investigated by deuterium diffusion and hydrogen effusion experiments. Deuterium concentration depth profiles were measured as a function of the passivation temperature, while in H effusion experiments the molecular hydrogen flux was measured as a…
Organic mixed valence compounds consisting of bisdiarylamino charge-bearing units with an oligothiophene bridge and oligothiophene radical cations have been compared using molecular modeling. The study has been performed with oligomers of 1 to 22 thiophene units. These two series of molecules have several properties i…
Isothermal and nonisothermal kinetics studies of thermal-induced gelation for waterborne polyurethane dispersions have been investigated rheologically. The change in the viscoelastic material functions such as elastic storage modulus, G ‘, viscous loss modulus, G ‘ ‘ and complex dynamic viscosity, η* during the gelati…
C1 - Journal Articles Refereed
A remarkable self-healing, toughening and strengthen-ing system, the sacrificial bonds and hidden length system,is widespread in nature: especially in glues in remarkablytough nanocomposite biomaterials such as bone, abaloneshell and diatoms. Abalone shell is 97% crystalline calciumcarbonate plates by weight, but is 3…
The relaxation dynamics of dipropylene glycol and tripropylene glycol (nPG-n=2,3) water solutions on the nPG-rich side has been studied by broadband dielectric spectroscopy and differential scanning calorimetry in the temperature range of 130-280 K. Two relaxation processes are observed for all the hydration levels; t…
Present status of experiments on charge ordering (CO) phenomena observed in organic molecular conductors is reviewed. Experimental techniques to detect and analyze the CO, i.e., NMR, X-ray and Infrared/Raman spectroscopy, are described and the experimental results in typical materials exhibiting CO are summarized. (DI…
We directly probe the microscopic structure, connectivity, and elasticity of colloidal gels using confocal microscopy. We show that the gel is a random network of one-dimensional chains of particles. By measuring thermal fluctuations, we determine the effective spring constant between pairs of particles as a function…
Since the first discovery of an organic superconductor, TMTSF 2 PF 6 (TMTSF = tetramethyltetraselenafulvalene) with the superconducting transition temperature ( T c )=0.9 K under 12 kbar, by the suppression of spin density wave (SDW) state, approximately 120 organic superconductors have been found. Among them, the hig…