Krzysztof Matyjaszewski、Peter J. Miller、Nisha Shukla 等 11 位作者1999-12-01OpenAlex
The atom transfer radical polymerization (ATRP) of styrene and acrylates from silicon wafers modified with an initiator layer composed of 2-bromoisobutyrate fragments is described. In the presence of the proper ratio of activating and deactivating transition-metal species, controlled radical polymerizations of styrene…
Advanced Polymer Synthesis and CharacterizationConducting polymers and applicationsPolymer Surface Interaction Studies
Seong Gyoon Kim、Won Tae Kim、Toshio Suzuki1999-12-01OpenAlex
We present a phase-field model (PFM) for solidification in binary alloys, which is found from the phase-field model for a pure material by direct comparison of the variables for a pure material solidification and alloy solidification. The model appears to be equivalent with the Wheeler-Boettinger-McFadden (WBM) model…
Metallurgical Processes and ThermodynamicsSolidification and crystal growth phenomenaAluminum Alloy Microstructure Properties
John M. Gosline、Paul A. Guerette、Christine Ortlepp 等 4 位作者1999-12-01OpenAlex
Spiders produce a variety of silks, and the cloning of genes for silk fibroins reveals a clear link between protein sequence and structure-property relationships. The fibroins produced in the spider's major ampullate (MA) gland, which forms the dragline and web frame, contain multiple repeats of motifs that include an…
Spider Taxonomy and Behavior StudiesSilk-based biomaterials and applicationsBiochemical and Structural Characterization
Kurt E. Sickafus、J. M. Wills、N. W. Grimes1999-12-01OpenAlex
This paper reviews the crystal structure of compounds with the general formula AB 2 X 4 , which crystallize with the same atomic structure as the mineral spinel, MgAl 2 O 4 . Three degrees of freedom associated with the detailed atomic arrangements of spinels are considered here: (i) the lattice parameter, a ; (ii) th…
Crystal Structures and PropertiesX-ray Diffraction in CrystallographyAdvanced Condensed Matter Physics
Heungsoo Kim、C. M. Gilmore、Alberto Piqué 等 8 位作者1999-12-01OpenAlex
High-quality indium–tin–oxide (ITO) thin films (200–850 nm) have been grown by pulsed laser deposition (PLD) on glass substrates without a postdeposition annealing treatment. The structural, electrical, and optical properties of these films have been investigated as a function of target composition, substrate depositi…
GaN-based semiconductor devices and materialsChalcogenide Semiconductor Thin FilmsZnO doping and properties
Lev D. Gelb、Keith E. Gubbins、Ravi Radhakrishnan 等 4 位作者1999-12-01OpenAlex
We review the current state of knowledge of phase separation and phase equilibria in porous materials. Our emphasis is on fundamental studies of simple fluids (composed of small, neutral molecules) and well-characterized materials. While theoretical and molecular simulation studies are stressed, we also survey experim…
Mesoporous Materials and CatalysisBlock Copolymer Self-AssemblyMaterial Dynamics and Properties
Fu Qiang Huang、James A. Ibers1999-11-30Inorganic Chemistry
Two mixed-chalcogen compounds LaCuSTe and SmCuSTe have been synthesized by the reactions of the elements at 1123 K. LaCuSTe crystallizes in a cell of dimensions a = 6.4955(8) Å, b = 7.7692(9) Å, c = 7.4665(9) Å, and beta = 95.045(2) degrees (T = 153 K) with four formula units in space group C(2)(h)()(5)-P2(1)/c of the…
Rare-earth and actinide compoundsIron-based superconductors researchInorganic Chemistry and Materials
Indrajit Ghosh、Rajesh K. Jain、Wolfgang G. Glasser1999-11-30ACS symposium series
Thermoplastic blends of several biodegradable polymers with lignin and lignin esters were prepared by solvent casting and melt processing. Among the biodegradable thermoplastics were cellulose acetate butyrate (CAB), a starch-caprolactone copolymer/blend (SCC), and poly(hydroxybutyrate) (PHB). Lignin esters included t…
Lignin and Wood ChemistryAdvanced Cellulose Research Studiesbiodegradable polymer synthesis and properties
Bert F. Sels、Dirk De Vos、Piet J. Grobet 等 6 位作者1999-11-30The Journal of Physical Chemistry B
Layered double hydroxides (LDHs) with the formula [Mg 0.7 Al 0.3 (OH) 2 ](NO 3 ) 0.3 were partially exchanged with MoO 4 2- and WO 4 2- and were used as heterogeneous catalysts for the decomposition of H 2 O 2 into singlet molecular oxygen ( 1 O 2 ). The oxometalate anions are present on the LDH as monomeric, tetrahed…
Layered Double Hydroxides Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsAdvanced Photocatalysis Techniques
David M. Walba、Lei Xiao、Patrick Keller 等 6 位作者1999-11-30Pure and Applied Chemistry
Abstract
Quantum optics and atomic interactionsMolecular spectroscopy and chiralityLiquid Crystal Research Advancements
Takoya Ikeda、Yanpeng Wu1999-11-30Pure and Applied Chemistry
Abstract
Liquid Crystal Research Advancements
Jonathan L. Sessler、Nicolai A. Tvermoes、Julian M. Davis 等 15 位作者1999-11-30Pure and Applied Chemistry
Abstract
Porphyrin and Phthalocyanine Chemistry
Mitsunori Yada、Hirohumi Kitamura、Akira Ichinose 等 5 位作者1999-11-30Angewandte Chemie International Edition
A novel family of mesoporous oxides of rare earth metals (Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) were synthesized with specific surface areas of 253-348 m(2) g(-1) and pore diameters of 2.5-3.0 nm (see Scheme). The mesoporous solids and their surfactant mesophase precursors are paramagnetic and exhibit a magnetic anomaly due…
Supercapacitor Materials and FabricationLayered Double Hydroxides Synthesis and ApplicationsMesoporous Materials and Catalysis
M. J. COOK1999-11-30Pure and Applied Chemistry
Abstract
Porphyrin and Phthalocyanine Chemistry
Kenji Kobayashi、Toshiaki Shirasaka、Azumi Sato 等 5 位作者1999-11-30Angewandte Chemie International Edition
Two different porous hydrogen-bonded networks are formed by self-assembly of the radially substituted host 1. In the network of type A, formed by 1 small middle dot4 Et(2)O, all OH groups of 1 are involved in hydrogen bonding, and the molecular sheets are stacked without translation to generate extended channels that…
Mesoporous Materials and CatalysisMetal-Organic Frameworks: Synthesis and ApplicationsSupramolecular Self-Assembly in Materials
Rahul R. Shah、Nicholas L. Abbott1999-11-30Journal of the American Chemical Society
We report that nematic liquid crystals (LCs) of 4-cyano-4‘-pentylbiphenyl (5CB) and p -methoxybenzylidene- p - n -butylaniline (MBBA) can be used to image reactants and products of reversible, acid−base reactions on surfaces with micrometer resolution. When supported on obliquely deposited films of gold, azimuthal ori…
Surfactants and Colloidal SystemsLiquid Crystal Research AdvancementsPhotonic Crystals and Applications
Koichi Tanaka、Fumio Toda、Eiko Mochizuki 等 7 位作者1999-11-30Angewandte Chemie International Edition
An intermolecular enantioselective photoreaction by a single-crystal-to-single-crystal transformation has been carried out for the first time, as is evident from X-ray structure analysis and X-ray powder diffractometric studies. This reaction, the dimerization of the title compound to cyclobutane derivative 1 (X=O, S)…
Crystallization and Solubility StudiesCrystallography and molecular interactionsPhotochromic and Fluorescence Chemistry
Olivier Kahn、Joulia Larionova≠、J. V. Yakhmi1999-11-30Chemistry - A European Journal
Reversible release or reabsorption of water like sponges, a process which is accompanied by a dramatic change of structure and magnetic properties, can be achieved by some molecular magnetic materials. When the sponges are hydrated, or wet, the structure consists of isolated units with a nonmagnetic ground state. When…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryLanthanide and Transition Metal Complexes
K. Doll、N. M. Harrison1999-11-30arXiv
We investigate the adsorption of chlorine on the Cu(111) surface with full potential all-electron density functional calculations. Chlorine adsorption at the fcc hollow sites is slightly preferred over that at the hcp hollow. The adsorption geometry is in excellent agreement with electron diffraction and ion scatterin…
Materials Science
M. Fornari、N. Marzari、M. Peressi 等 4 位作者1999-11-30arXiv
We investigate the electronic structure of over-coordinated defects in amorphous silicon via density-functional total-energy calculations, with the aim of understanding the relationship between topological and electronic properties on a microscopic scale. Maximally-localized Wannier functions are computed in order to…
Materials Science