Materials Literature
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Large high-quality type-II a diamond crystals in size of about 4.0 mm have been grown under the condition of 5.5 GPa and 1200–1300 degrees C by using the temperature gradient method in a domestic cubic anvil high-pressure apparatus. The Fe 55 Co 16 Ni 25 alloy (KOV) is used as the solvent metal, and Ti with the conten…
A phenomenological model is developed to describe the isotropic-chiral-smectic-C phase transition. The anomalous part of the heat capacity of the chiral-smectic-C liquid crystals above the isotropic-chiral-smectic-C phase transition is calculated using Landau's fluctuation theory. The temperature dependence of the hea…
The influence of succinylation on lysozyme is studied using circular dichroism, fluorescence spectroscopy, and differential scanning calorimetry. The spectroscopic data reveal that at room temperature the structures of succinylated lysozyme and native lysozyme are similar. However, the calorimetric results show that t…
Complexes of Mn(II) with 1,10-phenanthroline (phen) and 2,2'-bipyridine (bipy) are investigated by means of electrospray ionization (ESI) mass spectrometry. Under the conditions used, [MnL(n)]2+ with n = 2 and 3, [MnL(n)Cl]+ with n = 0-2, and [Mn2L(n)Cl3]+ with n = 2 and 3 are produced (where L = phen or bipy). The co…
Abstract Electrochemical deposition of polybithiophene (PbT) films on suitably roughened silver and copper electrodes enabled us to record surface‐enhanced Raman scattering (SERS) spectra of oxidized and reduced species showing the important changes in the spectral features of the different oxidation states of the pol…
We report a theoretical study of the multiple oxidation states (1+, 0, 1-, and 2-) of a meso,meso-linked diporphyrin, namely bis[10,15,20-triphenylporphyrinatozinc(II)-5-yl]butadiyne (4), using Time-Dependent Density Functional Theory (TDDFT). The origin of electronic transitions of singlet excited states is discussed…
As a candidate scaffold material for cardiac tissue engineering, Type I collagen material shows different mechanical properties due to the differences in the structural features such as orientation of fibril alignment and the environmental factors such as ultraviolet (UV) irradiation. In this article one-dimensional t…
The synthesis of the entire silyl-germyl sequence of molecules (H(3)Ge)(x)SiH(4)(-)(x) (x = 1-4) has been demonstrated. These include the previously unknown (H(3)Ge)(2)SiH(2), (H(3)Ge)(3)SiH, and (H(3)Ge)(4)Si species as well as the H(3)GeSiH(3) analogue which is obtained in practical high-purity yields as a viable al…
Biodegradable macromolecular Gd(III) complexes, Gd-DTPA cystine copolymers (GDCP), were grafted with PEG of different sizes to modify the physicochemical properties and in vivo MRI contrast enhancement of the agents and to study the effect of PEG chain length on these properties. Three new PEG-grafted biodegradable ma…
AIMS: To assess how a 10 year extension of the follow up period affected cancer incidence in the Swedish leather tanning cohort. METHODS: A cohort of 2027 tannery workers (of which 482 were women) who had been employed for at least one year between 1900 and 1989 at one of three Swedish leather tanneries, was establish…
We present low-temperature heat and charge transport as well as caloric properties of a ThAsSe single crystal. An extra -AT(1/2) term in the electrical resistivity, independent of magnetic fields as high as 14 T, provides evidence for an unusual scattering of conduction electrons. Additionally, both the thermal conduc…
The interaction of poly(methacrylic acid) (PMAA) brushes with oppositely charged surfactants has been studied as a function of the polymer brush graft density, the surfactant concentration, and the surfactant alkyl chain length at neutral pH. The changes in the degree of dissociation of the polyacid α and in the amoun…
Dentritic microstructures formed by gold nanoparticles have been fabricated by a wet-chemical protocol. HAuCl 4 was reduced in an aqueous surfactant solution of 3- heptadecafluoroctylsulfonylaminopropyltrimethylammonium iodide (CF 3 (CF 2 ) 7 −SO 2 NH−(CH 2 ) 3 N + (CH 3 ) 3 I -, HFOTAI) and the solution was allowed t…
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Abstract Deep ultraviolet resonance Raman spectroscopy was demonstrated to be a powerful tool for structural characterization of protein at all stages of fibril formation. The evolution of the protein secondary structure as well as the local environment of phenylalanine, a natural deep ultraviolet Raman marker, was do…
The activity and stability of lanthanum- or copper-containing cerium oxide sorbents for hot reformate gas desulfurization were investigated in this work. Reformate gas, derived from the catalytic partial oxidation or autothermal reforming of heavy fuels such as JP-8, is rich in hydrogen and CO and may also contain up…
A phenanthroline ligand has been covalently modified at the 2 and 9 positions by an aminophenylhexamolybdate substituent. The 1H NMR spectrum indicated a strong electron-withdrawing effect of the hexamolybdate (Mo6O19(2-)) moiety on the phenanthroline ligand. UV-vis and cyclic voltammetry showed extended conjugation o…
We demonstrate that wettability of poly(ethylene glycol) (PEG) surfaces can be controlled using nanostructures with various geometrical features. Capillary lithography was used to fabricate PEG nanostructures using a new ultraviolet (UV) curable mold consisting of functionalized polyurethane with acrylate group (MINS1…
We report a systematic and comprehensive investigation of the electronic structures and chemical bonding in a series of ditungsten oxide clusters, W2O(n)- and W2O(n) (n = 1-6), using anion photoelectron spectroscopy and density functional theory (DFT) calculations. Well-resolved photoelectron spectra were obtained at…
Recent experiments have established the generality of superabundant vacancies (SAV) formation in metal hydrides. Aiming to elucidate this intriguing phenomenon and to clarify previous interpretations, we employ density-functional theory to investigate atomic mechanisms of SAV formation in fcc hydrides of Ni, Cu, Rh, P…