Materials Literature
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We report the infrared and optical reflectance spectrum of semiconducting N-dimethyl thiomorpholinium (tetracyanoquinodimethane${)}_{2}$ at temperatures above and below the structural phase transition. Polarized measurements were made on several faces of large single crystal samples. For polarization close to the tetr…
Abstract For the purpose of developing a simple and quantitative description of the rate of reactions occurring in the Thermal DeNO x process, the kinetics of the homogeneous reaction between NO and NH 3 with excess of O 2 has been studied in an isothermal plug flow reactor. Temperature windows of NO reduction were ob…
In this work Fourier transform infrared spectroscopy was used to analyze samples of the passivating film produced on the anode during phenol electrolysis. Work by other researchers with p‐tertbutyl‐phenol was extended to the acidic region where the main product was found to be a 1,2,4 substituted ether‐linked polymer.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrigins of the double emission of the tetranuclear copper(I) cluster Cu4I4(pyridine)4: an ab initio studyMarcello Vitale, William E. Palke, and Peter C. FordCite this: J. Phys. Chem. 1992, 96, 21, 8329–8336Publication Date (Print):October 1, 1992Publication History Published…
Coatings of refractive index that vary between 1.22 and 1.44 were prepared from combinations of a colloidal silica suspension and a polysiloxane solution. The polysiloxane acted both as a binder and a filler for the colloidal silica particles. Increasing ratios gave coatings of lower porosity, hence higher refractive…
An approach using two spin-orbit (s.o.) coupling parameters for the g factors and the zero-field splitting of $^{4}$${\mathit{A}}_{2}$(${\mathit{t}}_{2}^{3}$) and $^{2}$E(${\mathit{t}}_{2}^{3}$) terms of ${\mathrm{Cr}}^{3+}$ clusters with trigonal symmetry is presented. The theory is applied to ${\mathrm{Cr}}^{3+}$ in…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStereocomplex formation between enantiomeric poly(lactic acid)s. 6. Binary blends from copolymersHideto Tsuji and Yoshito IkadaCite this: Macromolecules 1992, 25, 21, 5719–5723Publication Date (Print):October 1, 1992Publication History Published online1 May 2002Published ini…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNMR study of solution structures and dynamics of lanthanide(III) complexes of DOTASilvio Aime, Mauro Botta, and Giuseppe ErmondiCite this: Inorg. Chem. 1992, 31, 21, 4291–4299Publication Date (Print):October 1, 1992Publication History Published online1 May 2002Published inis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyelectrolyte adsorption: a subtle balance of forcesHenrica G. M. Van de Steeg, Martinus A. Cohen Stuart, Arie De Keizer, and Bert H. BijsterboschCite this: Langmuir 1992, 8, 10, 2538–2546Publication Date (Print):October 1, 1992Publication History Published online1 May 200…
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
The deviation from Cure-Weiss behavior has been investigated in lead magnesium niobate relaxor ferroelectrics. At high temperatures, the susceptibility was found to follow the Curie-Weiss relationship. A Curie constant and temperature of 1.2\ifmmode\times\else\texttimes\fi{}${10}^{5}$ and 398 K, respectively, were obt…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHyperbranched polyphenylenesYoung H. Kim and Owen W. WebsterCite this: Macromolecules 1992, 25, 21, 5561–5572Publication Date (Print):October 1, 1992Publication History Published online1 May 2002Published inissue 1 October 1992https://pubs.acs.org/doi/10.1021/ma00047a001http…
An algorithm is presented for the accurate and rapid generation of multiple protein sequence alignments from tertiary structure comparisons. A preliminary multiple sequence alignment is performed using sequence information, which then determines an initial superposition of the structures. A structure comparison algori…
The structures observed for many inorganic solids are the result of a compromise between the conflicting requirements of chemical bonding and threedimensional geometry. The ideal chemical structure and bond geometry can be predicted using the bondvalence model which is developed in some detail. The constraints imposed…
Atomic and molecular size devices are the ultimate goal of those working on, for example, nanoscale patterning and templating techniques. The various approaches to nanophase materials with stringent requirements of size, shape, and dimensionality are discussed, recent highlights are described, and teh advantages to be…
Interest in the properties of thin-film organic materials, especially regard ing organized monoand multilayer assemblies, has grown enormously in recent years. The impetus for this renaissance-the relevance of such structures and materials to biological interfaces and membranes, corrosion protection, electrochemistry…
The results of X-ray structural, IR and Raman spectroscopic, and thermodynamic studies of alkali metal molybdates and tungstates A2MnO3n+1 (A = Li, Na, K, Rb, Cs; M = Mo, W) are reviewed and analysed. The dependence of the vibrational spectra, activation energies, and crystal lattice energies on features of the struct…
The collagenous dermis of the white rhinoceros forms a thick, protective armour that is highly specialized in its structure and material properties compared with other mammalian skin. Rhinoceros skin is three times thicker than predicted allometrically, and it contains a dense and highly ordered three-dimensional arra…
SrTiO3 thin films having perovskite structure were fabricated by sol-gel technique with a post-deposition rapid thermal annealing treatment at 550 °C for 60 s. The films exhibited good structural, dielectric, and insulating properties. The measured dielectric constant and loss factor at 100 kHz were 225 and 0.008, res…
Nuclear transport theory predicts the formation of unstable bubbles and rings in the central collision between equal-mass heavy ions. This phenomenon occurs around a beam energy of E/A\ensuremath{\approxeq}50 MeV/nucleon and is due to the compression of the nuclei in the early stage of the collision. As observable con…