Zhifeng Jia、Guolin Li、Qi Zhu 等 9 位作者2009-07-02Chemistry - A European Journal
Hybrid polymerization of glycidyl methacrylate (GMA) with potassium hydride (KH) and various oligo(ethylene glycol)s as the initiating system, in which both vinyl polymerization and ring-opening polymerization occur simultaneously, generates hyperbranched poly(ether-ester)s. The reaction process has been followed by a…
Advanced Polymer Synthesis and CharacterizationChemical Synthesis and AnalysisDendrimers and Hyperbranched Polymers
Hongtao Yu、Yi Liu、Stephanie L. Brock2009-07-02ACS Nano
The effect of bulk network density on the extent of quantum confinement (probed by optical band gap) in CdSe quantum dot gels is evaluated. The CdSe gels were produced from controlled removal of surface thiolate ligands from CdSe quantum dots by adding 3% tetranitromethane. Two main techniques were employed to systema…
ZnO doping and propertiesLuminescence Properties of Advanced MaterialsQuantum Dots Synthesis And Properties
Hongxia Zhang、Yang Li、Chunqing Zhang 等 6 位作者2009-07-02Macromolecules
A series of dendrigraft star−comb polybutadienes (PBs), from generation zero to four (G0−G4), were synthesized by anionic polymerization and grafting-onto methodology. The 4-arm star PB (G0 PB) with high 1,4-content and narrow molecular weight distribution (MWD) was selectively epoxidized at the 1,4-PB sites to introd…
Advanced Polymer Synthesis and CharacterizationSynthetic Organic Chemistry MethodsDendrimers and Hyperbranched Polymers
Michael Riskin、Ran Tel‐Vered、Itamar Willner2009-07-02Advanced Functional Materials
Abstract Metal ions (Ag + , Cu 2+ , Hg 2+ ) are incorporated into an electropolymerized, poly( N ‐isopropyl acrylamide), pNIPAM, thermosensitive polymer associated with an electrode using the “breathing‐in” method. The ion‐functionalized pNIPAM matrices reveal ion‐dependent gel‐to‐solid phase‐transition temperatures (…
Conducting polymers and applicationsPolyoxometalates: Synthesis and ApplicationsCovalent Organic Framework Applications
Toru Arai、Shingo Nobukuni、Atula S. D. Sandanayaka 等 4 位作者2009-07-02The Journal of Physical Chemistry C
Single-walled carbon nanotubes (SWCNTs) tethering zinc porphyrins (ZnP) with flexible aliphatic bonds, ZnP−(spacer)−SWCNT, were prepared with applying the Prato reaction. Under illumination by visible light (>500 nm), ZnP−(spacer)−SWCNT effectively catalyzed the reduction of the benzylviologen dication (BV 2+ ) by 1-b…
Carbon Nanotubes in CompositesElectrochemical sensors and biosensorsPorphyrin and Phthalocyanine Chemistry
Giulio Scocchi、Paola Posocco、Jan‐Willem Handgraaf 等 6 位作者2009-07-02Chemistry - A European Journal
We present an innovative, multiscale computational approach to probe the behaviour of polymer-clay nanocomposites (PCNs). Our modeling recipe is based on 1) quantum/force-field-based atomistic simulation to derive interaction energies among all system components; 2) mapping of these values onto mesoscopic bead-field (…
Polymer crystallization and propertiesPolymer Nanocomposites and Properties
Daniel Kessler、Peter J. Roth、Patrick Théato2009-07-02Langmuir
The key designing in reliable biosensors is the preparation of thin films in which biomolecular functions may be immobilized and addressed in a controlled and reproducible manner. This requires the controlled preparation of specific binding sites on planar surfaces. Poly(methylsilsesquioxane)-poly(pentafluorophenyl ac…
Polymer Surface Interaction StudiesMolecular Junctions and NanostructuresNanofabrication and Lithography Techniques
Jacob Linder、Iver Bakken Sperstad、Asle Sudbø2009-07-02Physical Review B
We investigate Josephson junctions with superconducting ferropnictides, both in the diffusive and ballistic limit. We focus on the proposed ${s}_{\ifmmode\pm\else\textpm\fi{}}$-wave state and find that the relative phase shift intrinsic to the ${s}_{\ifmmode\pm\else\textpm\fi{}}$-wave state may provide $0\text{\ensure…
Physics of Superconductivity and MagnetismRare-earth and actinide compoundsIron-based superconductors research
Sergiu Coseri、G. Nistor、Lidija Fras 等 6 位作者2009-07-02Biomacromolecules
The oxidation reaction of regenerated cellulose fibers mediated by N-hydroxyphthalimide (NHPI) and various cocatalysts at room temperature for different time intervals and various amounts of low concentration sodium hypochlorite solution has been investigated to produce oxidized cellulose (OC), a biocompatible and bio…
Advanced Cellulose Research StudiesEnzyme-mediated dye degradationLignin and Wood Chemistry
Karsten Hinrichs、Dennis Aulich、Leonid Ionov 等 8 位作者2009-07-02Langmuir
This work provides direct chemical and structural insight into pH-dependent changes of an ultrathin (d=12 nm) mixed polyelectrolyte brush. In-situ infrared spectroscopic ellipsometry was used for the first time to study the gradual pH-responsive behavior of the brush, constituted of weak anionic and cationic polyelect…
Surfactants and Colloidal SystemsPolymer Surface Interaction StudiesElectrostatics and Colloid Interactions
Andrey Lyalin、Tetsuya Taketsugu2009-07-02The Journal of Physical Chemistry C
The adsorption of O 2 and C 2 H 4 molecules on small gold clusters consisting of up to 10 atoms has been investigated using theoretical methods based on density-functional theory. It is shown that, in addition to a conventional mechanism of the catalytic activation of O 2 adsorbed on a gold cluster, the interaction of…
Advanced Chemical Physics StudiesCatalytic Processes in Materials Sciencenanoparticles nucleation surface interactions
A. John Henderson、Changhyun Koo、Patrick Feng 等 8 位作者2009-07-02Physical Review Letters
We present low temperature magnetometry measurements on a new Mn3 single-molecule magnet in which the quantum tunneling of magnetization (QTM) displays clear evidence for quantum mechanical selection rules. A QTM resonance appearing only at high temperatures demonstrates tunneling between excited states with spin proj…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesOrganic and Molecular Conductors Research
Lidia Armelao、Gregorio Bottaro、Laura Bovo 等 8 位作者2009-07-02The Journal of Physical Chemistry C
Highly luminescent Eu 3+ -doped LaOF thin films have been prepared by a sol−gel procedure using La(hfa) 3 diglyme (Hhfa = 1,1,1,5,5,5-hexafluoro-2,4-pentanedione; diglyme = bis(2-metoxyethyl)ether) as a single-source precursor for lanthanum and fluorine. Europium doping (Eu/La = 3 and 10 atom %) has been achieved by a…
Luminescence Properties of Advanced MaterialsLanthanide and Transition Metal ComplexesInorganic Fluorides and Related Compounds
Kutlay Sever2009-07-02Journal of Reinforced Plastics and Composites
In this study, the effect of oligomeric siloxane on the mechanical properties of jute fabric-reinforced low-density polyethylene (LDPE) composites is examined. After alkali treatment of jute fabric, oligomeric siloxane treatment is conducted to promote adhesion between jute fiber and polyethylene matrix. Mechanical pr…
Mechanical Behavior of CompositesNatural Fiber Reinforced CompositesTextile materials and evaluations
Fabrice Pointillart、Olivier Maury、Yann Le Gal 等 6 位作者2009-07-02Inorganic Chemistry
The reactions between the redox-active 4-(2-tetrathiafulvalenyl-ethenyl)pyridine ligand (TTF-CH=CH-Py) and the tris(1,1,1,5,5,5-hexafluoroacetylacetonate)Ln(III) (Ln = La and Nd) lead to the formation of compounds with the formulas {[La(hfac)(5)][(TTF-CH=CH-Py(*+))](2)} (1), {[Nd(hfac)(4)(H(2)O)][(TTF-CH=CH-Py(*+))]}(…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesOrganic and Molecular Conductors Research
Myung Im Kim、Tsutomu Wakada、Satoshi Akasaka 等 8 位作者2009-07-02Macromolecules
We determined the phase boundary of the Fddd phase in the phase diagram of polystyrene- block -polyisoprene (SI) diblock copolymer by using small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM). We prepared eight SI diblock copolymers having different volume fractions of polyisoprene, f PI, in…
Polymer crystallization and propertiesBlock Copolymer Self-AssemblyMachine Learning in Materials Science
Xuefeng Cui、Zhuo Wang、Shijing Tan 等 6 位作者2009-07-02The Journal of Physical Chemistry C
We present the investigations of hydroxylated TiO 2 (110)−1 × 1 surfaces using scanning tunneling microscopy (STM). It is observed that in topographic images the protrusions of hydroxyls (OH) on TiO 2 (110) surfaces are dependent on the tip−sample distance in STM measurements at room temperature. In comparison with th…
nanoparticles nucleation surface interactionsElectronic and Structural Properties of OxidesSurface and Thin Film Phenomena
Pia Nielsen、Hans Toftlund、Andrew D. Bond 等 11 位作者2009-07-02Inorganic Chemistry
A family of spin crossover cobalt(II) complexes of the type [Co(terpyRX)(2)](Y)(2) x nH(2)O (X = 4, 8, 12 and Y = BF(4)(-), ClO(4)(-), PF(6)(-), BPh(4)(-)) has been synthesized, whereby the alkyl chain length, RX, and counteranion, Y, have been systematically varied. The structural (single crystal X-ray diffraction) a…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Han Li、Xinfeng Tang、Xianli Su 等 5 位作者2009-07-02Journal of Physics D Applied Physics
High performance nanostructured bulk skutterudites YbxCo4Sb12 (x = 0.1, 0.2, 0.3) have been prepared by combining the melt spinning technique with spark plasma sintering (SPS). The effects of different linear speeds V of the spinning copper wheel on the microstructure and phase composition of ribbon samples and bulk m…
Advanced Thermoelectric Materials and DevicesRare-earth and actinide compoundsThermodynamic and Structural Properties of Metals and Alloys
Debabrata Pradhan、I‐Nan Lin2009-07-02ACS Applied Materials & Interfaces
Diamond films with grain sizes in the range of 5-1000 nm and grain boundaries containing nondiamond carbon are deposited on a silicon substrate by varying the deposition parameters. The overall morphologies of the as-deposited diamond-nondiamond composite films are examined by scanning electron microscopy and atomic f…
Metal and Thin Film MechanicsHigh-pressure geophysics and materialsDiamond and Carbon-based Materials Research