I. Połeć、A. Henckens、Ludwig Goris 等 10 位作者2003-02-13Journal of Polymer Science Part A Polymer Chemistry
Abstract A new synthetic procedure toward substituted dithiophthalides, 5,6‐dialkyloxydithiophthalide and 5,6‐dithioalkyldithiophthalide, is presented. 5,6‐Dithiooctyldithiophthalide was obtained from 4,5‐dichlorophthalic acid in an eight‐step reaction with an overall yield of 26%. 5,6‐Dioctyloxydithiophthalide was ob…
Synthesis and properties of polymersOrganometallic Compounds Synthesis and CharacterizationOrganic Chemistry Cycloaddition Reactions
Unyong Jeong、Hee Hyun Lee、Hoichang Yang 等 7 位作者2003-02-13Macromolecules
The kinetics and mechanism of morphological transition from nonequilibrium lamella to cylinder microdomain in a polystyrene- block -poly(ethylene- co -but-1-ene)- block -polystyrene (SEBS) triblock copolymer were studied by using time-resolved synchrotron small-angle X-ray scattering (SAXS), transmission electron micr…
Polymer crystallization and propertiesRheology and Fluid Dynamics StudiesBlock Copolymer Self-Assembly
I. Balteanu、O. Petru Balaj、Brigitte S. Fox 等 6 位作者2003-02-13Physical Chemistry Chemical Physics
Absolute bimolecular rate constants for radiative stabilization of CO on gold cluster anions are measured by Fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometry, employing a sequence of reaction gas pulses to acquire sufficient product intensities of these exceedingly inefficient reactions. While some…
Advanced Chemical Physics StudiesCatalytic Processes in Materials ScienceNanocluster Synthesis and Applications
Paul G. Hoertz、Rachael A. Carlisle、Gerald J. Meyer 等 6 位作者2003-02-13Nano Letters
Two new organic rigid-rod linkers, dimethyl 5-(1-pyrenylethynyl)isophthalate and dimethyl 5-(4-(1-pyrenylethynyl)-phenylethynyl)isophthalate, were used to couple pyrene to the surface of TiO 2 (anatase) and ZrO 2 nanoparticle thin films. The rigid-rods increase the extinction coefficient and shift to the red the long-…
Organic Electronics and PhotovoltaicsQuantum Dots Synthesis And PropertiesPhotochromic and Fluorescence Chemistry
Bruno Jousselme、Philippe Blanchard、N. Gallego-Planas 等 8 位作者2003-02-13Journal of the American Chemical Society
A photodynamic molecular architecture has been synthesized by covalent fixation of a photoisomerizable azobenzene group at two fixed points of a conformationally flexible pi-conjugated quaterthiophene chain. The crystallographic structure shows that the two systems lie in parallel planes with a short interplane distan…
Supramolecular Chemistry and ComplexesLuminescence and Fluorescent MaterialsPhotochromic and Fluorescence Chemistry
Shiping Zhang、Jing Yang、Xiaoyun Liu 等 5 位作者2003-02-13Biomacromolecules
A new biodegradable copolyester, poly(butylene succinate-co-butylene malate) P(BS-co-BM), has been preliminarily prepared with optically active centers and lateral hydroxyl functional groups via a four-step synthetic strategy. First, an optically active benzyl-protected dimethyl malate was synthesized from a starting…
Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis
Aoli Wu、Paula M. Vilarinho、Ian M. Reaney 等 4 位作者2003-02-13Chemistry of Materials
This article reports on the early stages of nucleation and growth and texture development of the perovskite phase in PZT(52/48) seeded and unseeded sol−gel thin films. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) revealed that, in seeded films, the perovskite phase nucleates and grows at the film…
Ferroelectric and Piezoelectric MaterialsPerovskite Materials and ApplicationsMicrowave Dielectric Ceramics Synthesis
M. K. Balakirev、I.V. Kityk、В. А. Смирнов 等 5 位作者2003-02-13Physical Review A
A giant reversible increase $(>~{10}^{3}$ times) of the optical second-order harmonic's (SH) absorption by optical poling of oxide glass was found. The SH's absorption kinetics manifested anisotropy with respect to polarization of the pumping (poling) light. The observed absorption exerts the influence of optical p…
Glass properties and applicationsPhotorefractive and Nonlinear OpticsPhase-change materials and chalcogenides
Yongbing Lou、Anna Cristina S. Samia、Jonathan E. Cowen 等 7 位作者2003-02-13Physical Chemistry Chemical Physics
Cu1.8S quantum dots were prepared by using a single-source-precursor type method and investigated in the light of opto-electronic applications. With femtosecond time-resolved transient absorption measurements, the electron relaxation as well as their trapping dynamics could be evaluated. The measurements reveal that t…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications
Derek Ho、C. J. Glinka2003-02-13Chemistry of Materials
With Hansen's solubility parameters, δ o 2 = δ d 2 + δ p 2 + δ h 2, the correlation between the degree of exfoliation of organically modified clays and the solvent in which the clay platelets are dispersed/mixed has been analyzed. It has been found that the dispersion force of the solvent, reflected by δ d, is the pri…
Polymer Nanocomposites and PropertiesSurfactants and Colloidal SystemsClay minerals and soil interactions
Ulrich Häußermann、S. I. Simak、Rajeev Ahuja 等 4 位作者2003-02-13Physical Review Letters
Structural competition in boron group elements has been studied by means of ab initio calculations. For boron we predict a structural change $\ensuremath{\alpha}\mathrm{\text{\ensuremath{-}}}\mathrm{B}\ensuremath{\rightarrow}\ensuremath{\alpha}\mathrm{\text{\ensuremath{-}}}\mathrm{G}\mathrm{a}$ accompanied by a nonmet…
Metal and Thin Film MechanicsBoron and Carbon Nanomaterials ResearchMXene and MAX Phase Materials
Hyun Chul Lee、Hae Jin Kim、Soo Hyun Chung 等 6 位作者2003-02-13Journal of the American Chemical Society
Alumina nanotubes, nanofibers, and nanorods were synthesized through a new method based on a surfactant-driven hydrothermal process, but without adding any organic solvent. Our procedure provides a single-step, low-temperature route to different alumina nanostructures with thermal stability by varying the nature of su…
Advanced ceramic materials synthesisMesoporous Materials and CatalysisAnodic Oxide Films and Nanostructures
I Roch、Ph. Bidaud、Dominique Collard 等 4 位作者2003-02-13Journal of Micromechanics and Microengineering
In this paper, we present the fabrication process of a shape memory alloy (SMA) thin film in both monolithic and hybrid configurations. This provides an effective actuation part for a gripper made of SU-8 thick photoresist. We also extensively describe and discuss the assembly of the SMA thin film with the SU-8 mechan…
Advanced Sensor and Energy Harvesting MaterialsShape Memory Alloy TransformationsAdvanced Materials and Mechanics
Hyunjung Kim、W. Rühm、Laurence Lurio 等 8 位作者2003-02-13Physical Review Letters
The dynamics of supported polymer films were studied by probing the surface height fluctuations as a function of lateral length scale using x-ray photon correlation spectroscopy. Measurements were performed on polystyrene (PS) films of thicknesses varying from 84 to 333 nm at temperatures above the PS glass transition…
Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesFluid Dynamics and Thin Films
Michał Kruk、Mietek Jaroniec、Sang Hoon Joo 等 4 位作者2003-02-13The Journal of Physical Chemistry B
A series of SBA-15 silicas was synthesized using triblock copolymer templates with the same length of poly(propylene oxide) block (PO m; m = 70) and different average lengths of poly(ethylene oxide) blocks (EO n, n = 17−28). The average EO n length was varied by mixing EO 20 PO 70 EO 20 copolymer with either EO 5 PO 7…
Mesoporous Materials and CatalysisPolyoxometalates: Synthesis and ApplicationsCovalent Organic Framework Applications
Michel Cloître、Régis Borrega、Fabrice Monti 等 4 位作者2003-02-13Physical Review Letters
The local dynamics and the nonlinear rheology of soft colloidal pastes are shown to exhibit a remarkable universal behavior in terms of a unique microscopic time scale. This variable is associated with structural relaxation under the combined action of local frictional forces and elastic driving forces. These results…
Material Dynamics and PropertiesRheology and Fluid Dynamics StudiesPickering emulsions and particle stabilization
Kuiyang Jiang、A. Eitan、Linda S. Schadler 等 10 位作者2003-02-13OpenAlex
Gold nanoparticles were selectively attached to chemically functionalized surface sites on nitrogen-doped carbon (CN x ) nanotubes. A cationic polyelectrolyte was adsorbed on the surface of the nanotubes by electrostatic interaction between carboxyl groups on the chemically oxidized nanotube surface and polyelectrolyt…
Carbon Nanotubes in CompositesNanopore and Nanochannel Transport StudiesNanotechnology research and applications
I‐Chun Liu、Raymond Chien‐Chao Tsiang2003-02-12Journal of Polymer Science Part A Polymer Chemistry
Abstract A gel permeation chromatography (GPC) calculation method has been developed to determine the absolute molecular weight of a star‐shaped styrenic block copolymer with GPC–ultraviolet/refractive index calibrated with linear polystyrene standards. To illustrate the simplicity of this method, we have synthesized…
Advanced Polymer Synthesis and CharacterizationSurfactants and Colloidal SystemsPolymer Surface Interaction Studies
Saowaroj Chuayjuljit、C. Kunsawat、Pranut Potiyaraj2003-02-12Journal of Applied Polymer Science
Abstract In packaging applications, blocking is always found in low‐density polyethylene (LDPE) films. Practically, such problems can be solved by incorporation of antiblocking agents, for example, silica and talc. The objective of this research was to explore the possibility of using silica from rice husk ash (RHA si…
Concrete and Cement Materials ResearchPolymer Nanocomposites and PropertiesNatural Fiber Reinforced Composites
Dehui Yin、Yong Zhang、Yong Zhang 等 6 位作者2003-02-12Journal of Applied Polymer Science
Abstract Methacrylic acid (MAA) and methyl methacrylate (MMA) were used as additives for peroxide‐cured styrene–butadiene rubber (SBR) filled with three inorganic fillers with different particle sizes and surface activity, for example, MgO, Mg(OH) 2 , and BaSO 4 . The experimental results show that the introduction of…
Polymer Nanocomposites and PropertiesPolymer composites and self-healingSilicone and Siloxane Chemistry