Thomas J. Cleij、Jennifer K. King、Leonardus W. Jenneskens1999-12-23Chemistry of Materials
Chemical modification of poly(methylphenylsilane) 1 using triflate chemistry gave two series of random copolymers with different composition ratios, viz., poly(methylphenyl- co -4-dimethylaminophenylmethylsilane)s 3 − 7 and poly(methylphenyl- co -4-bromophenylmethylsilane)s 8 − 9 . The optical and electronic propertie…
Organic Light-Emitting Diodes ResearchConducting polymers and applicationsSynthesis and characterization of novel inorganic/organometallic compounds
Marina S. Cruz、Lucy D. A. Chumpitaz、José Guilherme Lembi Ferreira Alves 等 4 位作者1999-12-23Journal of Chemical & Engineering Data
Kinematic viscosities data have been obtained as a function of temperature for poly(ethylene glycols) with different molecular weights. The viscosity measurements were performed at ambient pressure and several temperatures ranging from 293.15 (or above their melting points) to 363.15 K. A generalized correlation based…
Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesAdsorption, diffusion, and thermodynamic properties of materials
Guilford Jones、Valentine I. Vullev、Emory H. Braswell 等 4 位作者1999-12-23Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTMultistep Photoinduced Electron Transfer in a de Novo Helix Bundle: Multimer Self-Assembly of Peptide Chains Including a Chromophore Special Pair1Guilford Jones, Valentine Vullev, Emory H. Braswell, and Dan ZhuView Author Information Department of Chemistry and the Cen…
Porphyrin and Phthalocyanine ChemistrySupramolecular Self-Assembly in MaterialsPhotochromic and Fluorescence Chemistry
Jorge Pérez‐Juste、Florian Hollfelder、Anthony J. Kirby 等 4 位作者1999-12-23Organic Letters
[reaction: see text] We have analyzed the different catalytic effects of surfactant aggregates upon the rate-determining hydroxide ion induced deprotonation reaction of 1. Vesicles are more effective catalysts than micelles, most likely providing a more apolar microenvironment at the substrate binding sites. We sugges…
Porphyrin and Phthalocyanine ChemistryProtein Interaction Studies and Fluorescence AnalysisElectron Spin Resonance Studies
Mark Green、D. A. Neumann1999-12-23Chemistry of Materials
Synthesis of the Ruddlesden−Popper phase, LaCa 2 Mn 2 O 7 is presented. The difficulty in obtaining a single-phase material, free from a perovskite impurity, is highlighted. Powder X-ray diffraction indicates an orthorhombic symmetry. Powder neutron diffraction reveals a subtle rotation of the MnO 6 octahedra and redu…
Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics
Jie Ji、James M. Dickson、Ronald F. Childs 等 4 位作者1999-12-23Macromolecules
A general model for the formation of thin-film composite membranes, that considers both diffusion- and reaction-controlled interfacial polymerization, under non-steady-state conditions, has been developed. Special models for either diffusion-controlled or reaction-controlled interfacial polymerization with steady- and…
Membrane Separation TechnologiesPolymer Surface Interaction StudiesMembrane Separation and Gas Transport
A. K. Das、Helen P. Kilty、P. J. Marto 等 5 位作者1999-12-23ASME Journal of Heat and Mass Transfer
Hydrophobic coatings have been created through self-assembled monolayers (SAMs) on gold, copper, and copper-nickel alloy surfaces that enhance steam condensation through dropwise condensation. The monolayer is formed by chemisorption of alkylthiols on these metal surfaces. Due to their negligible thickness (10–15 Å),…
Surface Modification and SuperhydrophobicityHeat Transfer and Boiling StudiesNanomaterials and Printing Technologies
A. Govindaraj、B. C. Satishkumar、Manashi Nath 等 4 位作者1999-12-23Chemistry of Materials
Nanowires of Au, Ag, Pt, and Pd (1.0−1.4 nm diam) have been produced in the capillaries of single-walled carbon nanotubes (SWNTs). The nanowire is single-crystalline in some cases. Dispersions of the nanowires in alcohol show longitudinal plasmon absorption bands at different wavelengths, suggesting the presence of a…
Carbon Nanotubes in CompositesGraphene research and applicationsNanopore and Nanochannel Transport Studies
Hong Liu、Aniket Bhattacharya、Amitabha Chakrabarti1999-12-22The Journal of Chemical Physics
Results from molecular dynamics simulations of phase separation in a quenched polymer solution are presented for both two- and three-dimensional systems. Simulations clearly demonstrate the existence of a networklike pattern formation at an early to intermediate time regime for sufficiently dense polymer solutions. Th…
Material Dynamics and PropertiesTheoretical and Computational PhysicsBlock Copolymer Self-Assembly
Shigeru Kunugi、Tomoko Tada、Yoshihiro Yamazaki 等 5 位作者1999-12-22Langmuir
ADVERTISEMENT RETURN TO ISSUEPREVNoteThermodynamic Studies on Coil−Globule Transitions of Poly(N-vinylisobutyramide-co-vinylamine) in Aqueous SolutionsS. Kunugi, T. Tada, Y. Yamazaki, K. Yamamoto, and M. AkashiView Author Information Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsuga…
Hydrogels: synthesis, properties, applicationsAdvanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and properties
Wang Yongjun、Wang Jin-Feng、Chen Hongcun 等 7 位作者1999-12-22Journal of Physics D Applied Physics
The electrical properties of (Nb, Zn)-doped SnO 2 ceramics as an new varistor material were investigated. It was found that there exists a correlation between the nonlinearity of the current density versus the electrical field, the frequency properties of relative permittivity and resistivity. Samples doped with 1.0 m…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsDielectric properties of ceramics
Jakob Heier、Jan Genzer、Edward J. Krämer 等 6 位作者1999-12-22The Journal of Chemical Physics
We investigate the transfer of a chemical pattern on a substrate into a symmetric diblock copolymer thin film of poly(styrene-2-vinylpyridine) (PS-PVP). The substrates have patterns of self-assembled monolayers (SAMs) produced by microcontact printing H3C-terminated (H3C-) SAM stripes alternating with HO-terminated (H…
Block Copolymer Self-AssemblyFluid Dynamics and Thin FilmsNanofabrication and Lithography Techniques
S J Dhoble1999-12-22Journal of Physics D Applied Physics
A phosphor Sr 5 (PO 4 ) 3 Cl, doped with Eu 2+ is reported. This is shown to be at least twice as sensitive as the conventional CaSO 4 :Dy phosphor used in thermoluminescence dosimetry of ionizing radiations. It has a linear response, simple glow curve, emission peaking at 456 nm, negligible fading and excellent reusa…
Luminescence Properties of Advanced MaterialsRadiation Detection and Scintillator TechnologiesSolid-state spectroscopy and crystallography
R. K. Dwivedi、Devendra Kumar、Om Parkash1999-12-22Journal of Physics D Applied Physics
The valence compensated solid solution Sr 0.65 La 0.35 Ti 0.65 Co 0.35 O 3 has been found to exhibit dielectric relaxor behaviour with a very high value of the dielectric constant. In the present investigation, this composition has been prepared using different processing parameters and routes, viz (a) solid-state sin…
Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisDielectric properties of ceramics
Seiji Kurihara、Syugo Nomiyama、Takamasa Nonaka1999-12-22Chemistry of Materials
This paper summarizes an effect of trans−cis photoisomerization of a chiral azobenzene compound on a phase structure of the compensated nematic liquid crystal (LC) consisting of the chiral azobenzene compound, nonphotochromic chiral compound with opposite twisting ability, and a host nematic LC. The trans−cis photoiso…
Liquid Crystal Research AdvancementsPhotochromic and Fluorescence ChemistryMolecular spectroscopy and chirality
Joachim Krug、Paolo Politi、Thomas Michely1999-12-22arXiv
We develop a theory of nucleation on top of two-dimensional islands bordered by steps with an additional energy barrier $ΔE_S$ for descending atoms. The theory is based on the concept of the residence time of an adatom on the island,and yields an expression for the nucleation rate which becomes exact in the limit of s…
cond-mat.dis-nnMaterials Sciencecond-mat.stat-mech
Oscar Iglesias、Amilcar Labarta1999-12-22arXiv
We present the results of a Monte Carlo simulation of the ground state and magnetic relaxation of a model of a thin film consisting on a two-dimensional square lattice of Heisenberg spins with perpendicular anisotropy K, exchange J and long-range dipolar interactions g. We have studied the ground state configurations…
Materials Sciencecond-mat.stat-mech
José A. Rodríguez、Tomàš Jirsàk、Joseph Dvorak 等 5 位作者1999-12-22OpenAlex
Synchrotron-based high-resolution photoemission and X-ray absorption near-edge spectroscopy (XANES) have been used to study the interaction of NO 2 with polycrystalline surfaces of metallic zinc and zinc oxide. NO 2 exhibits a complex chemistry on metallic zinc. After adsorbing nitrogen dioxide, N, O, NO, NO 2, and NO…
ZnO doping and propertiesCatalytic Processes in Materials ScienceGas Sensing Nanomaterials and Sensors
Heinar G. Schmidt、Thomas M. Murphy、S. Lucht 等 4 位作者1999-12-21Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
The purpose of this work is the development of a method for the in-situ detection of chemicals in sea water. Raman scattering was chosen as it is a non-intrusive method yielding finger-printing spectra of the analytes. Surface-enhanced Raman scattering (SERS) is used to provide the sensitivity necessary for trace anal…
Gold and Silver Nanoparticles Synthesis and ApplicationsBiosensors and Analytical DetectionWater Quality Monitoring and Analysis
Alan M. Cassell、Nathan R. Franklin、Thomas W. Tombler 等 6 位作者1999-12-21ChemInform
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…
Carbon Nanotubes in CompositesGraphene research and applicationsFullerene Chemistry and Applications