Materials Literature
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Phospholipid-linked mesoporphyrins separated by spacer methylene groups (C n ), PE-C n -MnMPMME ( n = 0, 5, 11) (Chart 1) were synthesized. Manganese porphyrin-mediated electron transfers across a liposomal membrane and on a glassy carbon (GC) electrode covered with a phospholipid bilayer membrane were examined to pro…
The theoretical analysis of the steady state amperometric response for a conducting polymer microelectrode is discussed. The coupled processes of first order chemical reaction and substrate diffusion within the polymer film are examined. The pertinent reaction/diffusion equation is developed and analytical solutions f…
Abstract A range of duplex and austenitic stainless steels and high grade cobalt and nickel base alloys were immersed in natural sea water off the West Coast of Scotland for periods of up to 18 months. This paper assesses the effect of biofouling by microorganisms and macrospecies on the electrochemical corrosion resp…
The synthesis, solution redox behaviour and intramolecular charge transfer properties of novel D(CH–CH)nA compounds (n = 0, 1, 3; D and A are 1,3-dithiole and nitrofluorene moieties, respectively) are reported.
Experimental and theoretical studies have been made on the nature of concentrated ozone. We proved that ozone with concentrations above 50 vol% can produce a passivated layer on the surface of stainless steel, which is considerably inactive to ozone decomposition. The ozone decomposition rate is strongly dependent on…
A protein-protein association regulated by phosphorylation of tyrosine is examined by NMR structural studies and biochemical studies. Binding of glyceraldehyde-3-phosphate dehydrogenase (G3PDH) and aldolase to the N-terminus of human erythrocyte anion transporter, band 3, inhibits enzyme activity. This inhibition is r…
(1998). Fundamentals of Human Hair Science. The Journal of The Textile Institute: Vol. 89, No. 4, pp. 715-715.
The all-syn oligocondensed bicyclo[2.2.2]octenes 3, 5, 20 and 29 with two to five etheno bridges show interaction of their π-orbitals by σ-overlap. This laticyclic conjugation reveals itself in the PE and UV spectra of the series as well as in the site selectivity of the Diels–Alder reaction with inverse electron dema…
Micro-single crystal diffraction techniques employing synchrotron radiation are used to determine the structures of the disordered template (4-piperidinopiperidine) within the recently synthesised, chabazite-related cobalt aluminium phosphate known as DAF-5; the structural details revealed are inaccessible by high-res…
A systematic study has been made of the liquid crystalline properties of two types of copper complexes derived from enamino-β-ketonate and iminopropyl-β-ketonate Schiff bases that exhibit mesomorphism. These complexes are structurally similar, and all have a bimetallic center as an expanded core group. The mesophase s…
The dependence of the hydrolysis and condensation kinetics of y-ureidopropyltrimethoxysilane on the pH in the water-methanol system at 23 °C was investigated by FTIR spectroscopy. Hydrolysis rate constants were calculated by nonlinear regression of the absorbance vs. time data for the CH3 rocking spectral band of the…
The electrochemical immobilization of a pH sensitive fluorescein derivative was achieved by preparing a fluorescein-substituted thiophene species, followed by its electropolymerization on a Pt electrode.
In previous works, authors have noted that corrosive wear was mainly determined by electrochemical dissolution, where the wear volume was equivalent to the corrosion volume calculated according to Faraday's law with the anodic current density obtained by potential pulse method. However, the corrosion volume has not ac…
This paper explores the basic mechanisms of fibre dehydration and the relationship between fibre structure and drying rate. Three fractions of water within the cell wall were found : bulk water located in large macropores, freezing bound water located in the micropores formed by the amorphous polymer network, and nonf…
An original device design including an aluminum–porous silicon light emitting diode connected with a photodetector by an alumina waveguide has been developed. Distinct photoconductivity and photovoltaic effects have been clearly revealed from current–voltage curves of the photodetector. The comparison of external ligh…
There is an increasing interest in developing Mg-based nanocrystalline hydrogen storage materials by mechanical alloying because Mg and its alloys have high storage capacity and their slow kinetics can be improved significantly by ball milling. However, their hydrides are still too stable for most practical uses. Impr…
The electron donor properties of the anti-thyroid drug carbimazole towards the soft Lewis acid I2 and the hard hydrogen-bond donor 4-fluorophenol are studied. Diiodine forms only a sulfur coordinated charge-transfer complex with carbimazole (formation constant ca. 1400 dm3 mol–1 in CCl4), while 4-fluorophenol forms bo…
The thermal expansion coefficients of various perovskite-type oxides have been estimated by re-evaluating the parameters used in the Ruffa's method. The Morse potential has been used to evaluate the thermal expansion coefficient assuming the Debye model for the frequency distribution of the Morse oscillator. The param…
Fifteen new steroidal glycosides were obtained from the roots of Metaplexis japonica M. (Asclepiadaceae). These glycosides were confirmed to have ramanone, 12-O-acetylramamone, pergularin, 12-O-acetylpergularin and deacylmetaplexigenin as the aglycone and 2, 6-dideoxyhexopyranoses as the sugar sequence by spectroscopi…
Chemical implantation of palladium(II) has been carried out under mild conditions by reacting trans-Pd(O 2 CNEt 2 ) 2 (NHEt 2 ) 2 with the silanol groups of amorphous silica, carbon dioxide and secondary amine being released in the process. The palladium-containing silica has been characterized and the coordination en…