Zhao Dai、Xinlin Yang、Wenqiang Huang2006-10-20Polymer International
Abstract Narrow‐disperse or monodisperse poly{[poly(ethylene glycol) methyl ether acrylate]‐ co ‐(acrylic acid)} (poly(PEGMA‐ co ‐AA)) microspheres were prepared by distillation precipitation polymerization with ethyleneglycol dimethacrylate (EGDMA) as crosslinker with 2,2′‐azobisisobutyronitrile as initiator in neat…
Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesSynthesis and properties of polymers
Sudipa Panigrahi、Subrata Kundu、Soumen Basu 等 9 位作者2006-10-20Nanotechnology
We herein report a facile one-pot synthesis, stabilization, redispersion and Cu–S interaction of L-cysteine and dodecanethiol (DDT) protected copper organosol in toluene from precursor copper stearate using sodium borohydride in toluene under a nitrogen atmosphere. Surface modification of the synthesized copper organo…
Gold and Silver Nanoparticles Synthesis and ApplicationsMolecular Junctions and NanostructuresNanocluster Synthesis and Applications
Isabel Pastoriza‐Santos、Jorge Pérez‐Juste、Susana Carregal‐Romero 等 5 位作者2006-10-20Chemistry - An Asian Journal
Metallodielectric composites with tunable optical properties were prepared by layer-by-layer assembly of gold nanorods on polystyrene (PS) spheres and subsequent deposition of SiO2 or TiO2 encapsulating shells through a sol-gel process. The optical properties of the core-shells were tailored in the visible and the nea…
Gold and Silver Nanoparticles Synthesis and ApplicationsPolymer Surface Interaction StudiesNanomaterials for catalytic reactions
S. Heinbuch、F. Dong、J. J. Rocca 等 4 位作者2006-10-20The Journal of Chemical Physics
Pure neutral (CO2)n clusters and mixed (CO2)n(H2O)m clusters are investigated employing time of flight mass spectroscopy and single photon ionization at 26.5 eV. The distribution of pure (CO2)n clusters decreases roughly exponentially with increasing cluster size. During the ionization process, neutral clusters suffer…
Advanced Chemical Physics StudiesDiamond and Carbon-based Materials ResearchNonlinear Optical Materials Studies
M.G. Hutchins、O. Abu-Alkhair、M.M. El-Nahass 等 4 位作者2006-10-20Journal of Physics Condensed Matter
Thin films of amorphous tungsten trioxide, a-WO 3 , have been thermally evaporated onto glass substrate held at 350 K. Annealing at 723 K caused the formation of polycrystalline tungsten trioxide, c-WO 3 , with a monoclinic structure. The dark DC electrical conductivity of both a-WO 3 and c-WO 3 was studied over a tem…
ZnO doping and propertiesThin-Film Transistor TechnologiesTransition Metal Oxide Nanomaterials
Galina O. Gladchenko、Maksym V. Karachevtsev、V.S. Leontiev 等 7 位作者2006-10-20Molecular Physics
Aqueous suspensions of ultrasonically fragmented double-stranded (fds-) DNA and single-walled carbon nanotubes (SWNTs) have been investigated by UV- and IR-absorption, NIR-emission and Raman spectroscopy. According to gel-electrophoresis, the lengths of the polymer fragments were 100–500 base pairs. Analysis of IR and…
Carbon Nanotubes in CompositesNanopore and Nanochannel Transport StudiesNanotechnology research and applications
Xueze Wang、Bin Yao、Zian Wei 等 12 位作者2006-10-20Journal of Physics D Applied Physics
A lithium (Li) and nitrogen (N) dual-doped p-type ZnO film (ZnO : (Li,N)) was deposited on c-plane sapphire by RF-magnetron sputtering of Zn–2 at.% Li alloy using mixed gases of oxygen and nitrogen and then annealing in N 2 flow. It has a carrier concentration of 3.07 × 10 16 cm −3 and Hall mobility of 1.74 cm 2 V −1…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsCopper-based nanomaterials and applications
Jian Xu、Dehu Cui、Ting Zhu 等 8 位作者2006-10-20Nanotechnology
We report in this paper the growth of PbS shells over colloidal PbSe nanocrystal quantum dots (NQDs) with monolayer-precision. The technique of successive ion layer adsorption and reaction (SILAR) has been adapted to the growth of high-quality core–shell nanocrystals. The core–shell infrared NQDs were ligand-exchanged…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications
N. Sivakumar、A. Narayanasamy、N. Ponpandian 等 7 位作者2006-10-20Journal of Physics D Applied Physics
Nanocrystalline Ni 0.5 Zn 0.5 Fe 2 O 4 spinel ferrite with a grain size of 50 nm was prepared by using the ceramic method. The grain size was further reduced to 14 nm by milling the as-prepared ferrite particles in a high-energy ball mill. From the impedance spectroscopy studies we have observed that the dc electrical…
Multiferroics and related materialsMagnetic Properties and Synthesis of FerritesMagneto-Optical Properties and Applications
Minghui Chai、Aaron K. Holley、Michael Kruskamp2006-10-20Chemical Communications
A water-soluble self-assembly has been formed by associating adipic acid molecules onto the surface of the third generation poly(propyleneimine) dendrimer and this system has been used to encapsulate fluorescein.
RNA Interference and Gene DeliveryLuminescence and Fluorescent MaterialsDendrimers and Hyperbranched Polymers
Tansir Ahamad、Vikrant Kumar、Nahid Nishat2006-10-20Polymer International
Abstract A polymeric ligand (thiourea‐formaldehyde resin ‐ TUFR) bearing nitrogen and sulfur donor groups was synthesized by the polycondensation of thiourea and formaldehyde in acidic medium and its polychelates were prepared in alcoholic solution of metal ions such as Mn(II), Co(II), Ni(II), Cu(II) and Zn(II). The T…
Epoxy Resin Curing ProcessesThermal and Kinetic AnalysisPolymer Synthesis and Characterization
Jayeeta Bhaumik、Zhen Yao、K. Eszter Borbas 等 5 位作者2006-10-20The Journal of Organic Chemistry
Imidazole-substituted metalloporphyrins are valuable for studies of self-assembly and for applications where water solubility is required. Rational syntheses of porphyrins bearing one or two imidazol-2-yl or imidazol-4-yl groups at the meso positions have been developed. The syntheses employ dipyrromethanes, 1-acyldip…
Supramolecular Chemistry and ComplexesPorphyrin and Phthalocyanine ChemistryLuminescence and Fluorescent Materials
Wolfgang H. Binder、Oskar W. Smrzka2006-10-20Angewandte Chemie International Edition
Too much fiber? Protein fibers play an important role in cellular processes, but are also involved in protein-folding diseases, such as Alzheimer's disease. Modern screening and validation models allow the investigation of the aggregation and deaggregation kinetics of protein fibers (see scheme). These studies can ser…
Proteins in Food SystemsConnective tissue disorders researchSupramolecular Self-Assembly in Materials
Hua He、Huifeng Qian、Chaoqing Dong 等 5 位作者2006-10-20Angewandte Chemie International Edition
Blinking marvelous! In contrast to quantum dots (QDs) synthesized in organic solutions, CdTe QDs synthesized in aqueous solutions containing thiopropionic acid do not blink. The fluorescence of these QDs is steady under continuous laser excitation (see picture, the gray line is the background intensity). The presence…
Perovskite Materials and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films
Lee Chow、S. Shishiyanu、Oleg Lupan 等 4 位作者2006-10-20ECS Transactions
A novel aqueous relatively low-temperature thin film growth technique has been developed to fabricate a new generation of smart and functional nanostructured metal oxide thin film materials. This chemical synthetic route uses stable and inexpensive metal inorganic salts and environment-friendly solvents. The nanomater…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsTransition Metal Oxide Nanomaterials
Hua He、Huifeng Qian、Chaoqing Dong 等 5 位作者2006-10-20Angewandte Chemie
Schwankungsfrei: Anders als in organischen Lösungsmitteln hergestellte Quantenpunkte (QDs) zeigen CdTe-QDs aus wässriger Thiopropionsäure-Lösung eine gleichmäßige Fluoreszenz unter kontinuierlicher Laseranregung (siehe Abbildung; graue Linie: Hintergrundintensität). Die Gegenwart von Thiogruppen auf der QD-Oberfläche…
2D Materials and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films
A. Jákli、Guangxun Liao、I. Shashikala 等 5 位作者2006-10-20Physical Review E
Liquid-crystal phases with both solid and liquid characteristics are unique, since they exhibit chirality on both molecular and mesoscopic levels under special circumstances. We have studied binary composites formed by mixing of a chiral dimer (B-Ch), in which a bent core is covalently linked to a promesogenic cholest…
Liquid Crystal Research AdvancementsSynthesis and Properties of Aromatic CompoundsPlant Reproductive Biology
Shuang Yang、Dadong Yan、Hong-Ge Tan 等 4 位作者2006-10-20Physical Review E
The depletion effect between two spherical colloidal particles in nonadsorbing polymer solutions is investigated using the self-consistent field theory. The density distributions of polymer segments, the depleted amount and depletion potential are calculated numerically in bispherical coordinates. The effects of chain…
Material Dynamics and PropertiesSurfactants and Colloidal SystemsElectrostatics and Colloid Interactions
D. M. Heyes、Michael Cass、A. C. Brańka2006-10-20Molecular Physics
A study of the soft-core to hard-core percolation properties of the hard-sphere fluid as a function of hard core (sphere) packing fraction, ζ, has been made using the Molecular Dynamics computer simulation method. The interparticle separation between the soft shells to achieve percolation, σ p , exhibits a monotonic d…
Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesTheoretical and Computational Physics
Kylie Catchpole2006-10-20Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences
The world has recently been waking up to the urgent need to move away from fossil fuels and towards a low-carbon economy. To achieve this, we need a way of producing electricity that is efficient, widely applicable and cheap. At the same time, there has recently been an appreciation of the tremendous scope for making…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanowire Synthesis and Applications