Shin‐ichi Yusa、Kenichi Fukuda、Tohei Yamamoto 等 7 位作者2007-11-10Langmuir
Poly(N-isopropylacrylamide) (PNIPAM) with a narrow molecular weight distribution was prepared by reversible addition-fragmentation chain transfer (RAFT) radical polymerization. A dithioester group at the chain end of PNIPAM thus prepared was cleaved by treating with 2-ethanolamine to provide thiol-terminated PNIPAM wi…
Gold and Silver Nanoparticles Synthesis and Applications
Minfang Zhang、Masako Yudasaka、Kumiko Ajima 等 5 位作者2007-11-10ACS Nano
We show that light-assisted oxidation with hydrogen peroxide effectively and rapidly opens holes in carbon nanohorn walls and, more importantly, creates abundant oxygenated groups such as carboxylic groups at the hole edges. These oxygenated groups reacted with the protein bovine serum albumin. The obtained conjugates…
Carbon Nanotubes in CompositesElectrochemical sensors and biosensorsGraphene and Nanomaterials Applications
Jing An、Bin Tang、Xiaohua Ning 等 9 位作者2007-11-10The Journal of Physical Chemistry C
Successfully using the solution phase, we have prepared, in large quantities, uniform hexagonal silver nanoplates developed from silver triangular nanoprims by employing a photoinduced technique. The growth process was characterized by ultraviolet−visible (UV−vis) spectroscopy, transmission electron microscope (TEM),…
Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesNanomaterials and Printing Technologies
Jeremiah J. Gassensmith、Easwaran Arunkumar、L. W. Barr 等 8 位作者2007-11-10Journal of the American Chemical Society
Anthracene-containing tetralactam macrocycles are prepared and found to have an extremely high affinity for squaraine dyes in chloroform (log Ka = 5.2). Simply mixing the two components produces highly fluorescent, near-infrared inclusion complexes in quantitative yield. An X-ray crystal structure shows the expected h…
Supramolecular Self-Assembly in MaterialsMicro and Nano RoboticsModular Robots and Swarm Intelligence
Yuri Fedutik、Vasily V. Temnov、U. Woggon 等 5 位作者2007-11-10Journal of the American Chemical Society
We report about the synthesis and optical properties of a composite metal-insulator-semiconductor nanowire system which consists of a wet-chemically grown silver wire core surrounded by a SiO2 shell of controlled thickness, followed by an outer shell of highly luminescent CdSe nanocrystals. With microphotoluminescence…
Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesNanowire Synthesis and Applications
Liang Shi、Yeming Xu、Suikong Hark 等 8 位作者2007-11-10Nano Letters
Two-junction-nanowire arrays (SnO 2 capped ZnO nanowire arrays on Zn substrate) are synthesized using a two-step-solution-reaction. The bare single crystalline ZnO nanowires give reasonably intense band edge luminescence but also strong green emission likely due to surface defects. The SnO 2 capping treatment not only…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsGa2O3 and related materials
Bart A. J. Noordover、Robbert Duchateau、Rolf A. T. M. van Benthem 等 5 位作者2007-11-10Biomacromolecules
Citric acid (CA) was evaluated as a functionality-enhancing monomer in biobased polyesters suitable for coating applications. Model reactions of CA with several primary and secondary alcohols and diols, including the 1,4:3,6-dianhydrohexitols, revealed that titanium(IV) n-butoxide catalyzed esterification reactions in…
biodegradable polymer synthesis and propertiesPolymer composites and self-healingCarbon dioxide utilization in catalysis
Jian Zhang、Chad M. Shade、Demetra A. Chengelis 等 4 位作者2007-11-10Journal of the American Chemical Society
A strategy to sensitize and protect near-infrared (NIR) emitting Nd3+ and Yb3+ is presented. Combining protection provided by the inorganic matrix of NaYF4 nanocrystals and sensitization from tropolonate ligands capped on their surface, the lanthanide cation centered luminescence was observed through the ligand excita…
Luminescence Properties of Advanced MaterialsLanthanide and Transition Metal ComplexesInorganic Fluorides and Related Compounds
Siwar Zouari、Abdelwaheb Cheikh-Rouhou、Rafik Ballou 等 4 位作者2007-11-10arXiv
An unreported praseodymium substituted phase of the Bi-Ru-O system with formula Bi2.67Pr0.33Ru3O11was prepared. Its crystal structure and magnetic properties were investigated. Pr substituted occurs only on one of the two Bi sites. The magnetism of the compound is essentially dominated by a Pr3+ contribution. A non li…
Materials Science
A. Yu. Smirnov、S. Savel'ev、L. G. Mourokh 等 4 位作者2007-11-10arXiv
We propose using semiconductor quantum dots for a simulation of chemical reactions as electrons are redistributed among such artificial atoms. We show that it is possible to achieve various reaction regimes and obtain different reaction products by varying the speed of voltage changes applied to the gates forming quan…
Materials Science
Felice De Santis、Sergey Adamovsky、G. Titomanlio 等 4 位作者2007-11-10Macromolecules
A wide set of crystallization isotherms and the subsequent melting behavior of isotactic polypropylene (i-PP) were investigated using differential scanning calorimetry and nanocalorimetry with a very high rate in the cooling step. The latter technique offers, indeed, the distinct possibility to perform isothermal crys…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
P. Chin、Celso de Mello Donegá、Svetlana S. van Bavel 等 6 位作者2007-11-10Journal of the American Chemical Society
In this work we present the preparation of highly luminescent anisotropic CdTe/CdSe colloidal heteronanocrystals. The reaction conditions used (low temperature, slow precursor addition, and surfactant composition) resulted in a tunable shape from prolate to branched CdTe/CdSe nanocrystals. Upon CdSe shell growth the h…
Perovskite Materials and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films
Siwar Zouari、Laurent Ranno、Abdelwaheb Cheikh-Rouhou 等 4 位作者2007-11-10arXiv
The effect of cationic size mismatch at the A site at constant manganese valence on the structural and magnetic properties of a perovskite-type rare-earth manganate was investigated in the Pr0.9(Na1-xKx)0.1MnO3 solid solution system (0 <= x < 1). All members of this solid solution series are orthorhombic at room tempe…
Materials Science
M. Björck、Gabriella Andersson2007-11-10OpenAlex
GenX is a versatile program using the differential evolution algorithm for fitting X-ray and neutron reflectivity data. It utilizes the Parratt recursion formula for simulating specular reflectivity. The program is easily extensible, allowing users to incorporate their own models into the program. This can be useful f…
Enzyme Structure and FunctionX-ray Spectroscopy and Fluorescence AnalysisX-ray Diffraction in Crystallography
Akihiro Furube、Luchao Du、Kohjiro Hara 等 5 位作者2007-11-10OpenAlex
By using femtosecond transient absorption spectroscopy with visible pump and IR probe to observe generation of injected electrons, we could directly observe plasmon-induced electron transfer from 10 nm gold nanodots to TiO2 nanocrystalline film. It was revealed that the reaction time was within 240 fs and the yield wa…
Gold and Silver Nanoparticles Synthesis and ApplicationsCopper-based nanomaterials and applicationsLaser-Ablation Synthesis of Nanoparticles
M. Dolores Fernández、M. Fernández、M. J. Fernández 等 4 位作者2007-11-09Journal of Applied Polymer Science
Abstract Poly(vinyl alcohol) (PVAL) and vinyl acetate‐vinyl alcohol copolymers (VAVAL) were esterified with 3,5‐dinitrobenzoyl chloride using the cycled urea N , N ′‐dimethylpropyleneurea (1,3‐dimethyl‐3,4,5,6‐tetrahydro‐2(1H)‐pyrimidinone) (DMPU) as the solvent. Vinyl alcohol‐vinyl‐3,5‐dinitrobenzoate copolymers (VAL…
biodegradable polymer synthesis and propertiesMembrane Separation and Gas TransportSynthesis and properties of polymers
P. Solarz、M. Nikl、A. Kłos 等 8 位作者2007-11-09Crystal Research and Technology
Abstract Single crystals of GdCa 4 O(BO 3 ) 3 (GdCOB) pure and doped with Eu concentration of 1 and 4 at% were grown by the Czochralski and micropulling‐down methods. The distribution of Eu ions in GdCOB crystals was uniform. The substitutions of Eu 3+ in Gd, Ca(1) and Ca(2) cation sites and eventually formation Eu 2+…
Luminescence Properties of Advanced MaterialsCrystal Structures and PropertiesNuclear materials and radiation effects
Kun Gao、Rucheng Dai、Zengming Zhang 等 4 位作者2007-11-09Journal of Physics Condensed Matter
We have investigated the temperature and excitation energy dependence of Raman spectra of single-wall carbon nanotubes (SWCNTs). The measured Raman shifts for D and G bands of SWCNTs show a softening behavior upon increasing temperature (83–733 K). A theoretical model is developed to study the frequency shifts for the…
Carbon Nanotubes in CompositesGraphene research and applicationsMechanical and Optical Resonators
D. Schwarzenbach、Henrik Birkedal、M. Hostettler 等 4 位作者2007-11-09Acta Crystallographica Section B Structural Science
The structure of, and anisotropic thermal motions in, the red semiconductor tetrahedral layer structure of HgI(2) have been studied with neutron powder diffraction as a function of temperature from 10 to 293 K. Average thermal displacement parameters U(eq) of the two atoms are comparable in size at 10 K, but U(eq)(Hg)…
High-pressure geophysics and materialsCrystal Structures and PropertiesSolid-state spectroscopy and crystallography
T. Kanagasekaran、P. Mythili、P. Srinivasan 等 9 位作者2007-11-09Crystal Research and Technology
Abstract The 50 MeV Si 7+ ion irradiation induced modifications on structural, dielectric, optical and mechanical properties of Vertical Bridgman grown benzimidazole (BMZ) crystals were studied. The high resolution X‐ray diffraction studies show the quality of as grown BMZ and irradiated BMZ crystals. The dielectric c…
Metal and Thin Film MechanicsIon-surface interactions and analysisPolymer Nanocomposite Synthesis and Irradiation