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Photo-induced isomerization of ethylene-bridged azobenzene explored by ab initio based non-adiabatic dynamics simulation: A comparative investigation of the isomerization in the gas and solution phases

Jun Cao、L.H. Liu、Wei‐Hai Fang 等 5 位作者2013-04-04The Journal of Chemical Physics

Azobenzene is one of the most widely used photoactive units and recently an ethylene-bridged azobenzene (BAB) was reported to have greatly enhanced conversion efficiency, quantum yield, and other favorable properties. As the first step towards exploring its photo-switchable character in real systems, we report here a…

Photochemistry and Electron Transfer StudiesPhotochromic and Fluorescence ChemistryPhotoreceptor and optogenetics research

Rapid, Guanosine 5'‐Diphosphate‐Induced, Gelation of Chitosan Sponges as Novel Injectable Scaffolds for Soft Tissue Engineering and Drug Delivery Applications

Mina Mekhail、Jamal Daoud、Guillermina Almazán 等 4 位作者2013-04-04Advanced Healthcare Materials

Novel injectable chitosan sponges based on rapid ionic crosslinking using guanosine 5'-diphosphate are introduced. The rapid gelation, high water retention, desirable physicochemical properties, soft tissue-like mechanical properties, and excellent cytocompatibility make these injectable sponges promising candidates f…

Hydrogels: synthesis, properties, applicationsbiodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical Applications

Efficient quantum dot light-emitting diodes with solution-processable molybdenum oxide as the anode buffer layer

Shaojian He、Shusheng Li、Fuzhi Wang 等 6 位作者2013-04-04Nanotechnology

Quantum dot light-emitting diodes (QD-LEDs) are characterized by pure and saturated emission colors with narrow bandwidth. Optimization of the device interface is an effective way to achieve stable and high-performance QD-LEDs. Here we utilized solution-processed molybdenum oxide (MoOx) as the anode buffer layer on IT…

ZnO doping and propertiesQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films

Synthesis and Size Control of Iron(II) Hexacyanochromate(III) Nanoparticles and the Effect of Particle Size on Linkage Isomerism

Matthieu Dumont、Olivia N. Risset、E.S. Knowles 等 7 位作者2013-04-04Inorganic Chemistry

The controlled synthesis of monodisperse nanoparticles of the cubic Prussian blue analogue iron(II) hexacyanochromate(III) is reported along with a kinetic study, using cyanide stretching frequencies, showing the variations of the activation energy (E(a)) of the linkage isomerism as a function of the particle size. Hi…

Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Understanding the Role of ω-End Groups and Molecular Weight in the Interaction of PNIPAM with Gold Surfaces

Arnaud Glaria、Mariana Beija、Romain Bordes 等 5 位作者2013-04-04Chemistry of Materials

Modification of nanoparticle surfaces by adsorption or grafting of polymers allows fine control of hybrid materials properties for diverse applications. To obtain such a control, it is of paramount importance to understand the impact of the polymer structure on the nature and strength of its interaction with the nanop…

Gold and Silver Nanoparticles Synthesis and ApplicationsAdvanced Sensor and Energy Harvesting MaterialsPolymer Surface Interaction Studies

Exchange biased magnetoelectric composites for vector field magnetometers

Enno Lage、Frederik Woltering、Eckhard Quandt 等 4 位作者2013-04-04Journal of Applied Physics

Magnetoelectric (ME) vector field sensors can be realized by combining individual sensors with anisotropic sensitivity. Following this approach, exchange biased ME thin film composites were incorporated into two dimensional vector magnetometers. These self biased composites do not need magnetic dc bias fields for thei…

Magnetic properties of thin filmsFerroelectric and Piezoelectric MaterialsMultiferroics and related materials

Toward single‐walled carbon nanotube–gadolinium complex as advanced MRI contrast agents: Pharmacodynamics and global genomic response in small animals

Pramod Avti、Yahfi Talukdar、Matvey V. Sirotkin 等 5 位作者2013-04-04Journal of Biomedical Materials Research Part B Applied Biomaterials

Gadolinium nanoparticle-catalyzed single-walled carbon nanotubes (Gd-SWCNTs) have recently shown potential in vitro as high-performance T1 magnetic resonance imaging (MRI) contrast agents (CAs). Their preclinical safety assessment at nontoxic dosages is essential for MRI applications. Herein, the in vivo (in rats) pha…

Nanoparticle-Based Drug DeliveryAdvanced MRI Techniques and ApplicationsLanthanide and Transition Metal Complexes

Fabrication of Hierarchical Macroporous/Mesoporous Carbons via the Dual-Template Method and the Restriction Effect of Hard Template on Shrinkage of Mesoporous Polymers

Nianwu Li、Mingbo Zheng、Shaoqing Feng 等 9 位作者2013-04-04The Journal of Physical Chemistry C

A series of hierarchically ordered macro- / mesoporous polymer resins and macro- / mesoporous carbon monoliths were synthesized using SiO 2 opal as a hard template for the macropore, amphiphilic triblock copolymer PEO–PPO–PEO as a soft template for the mesopore, and phenolic resin as a precursor for the polymer or car…

Metal-Organic Frameworks: Synthesis and ApplicationsMesoporous Materials and CatalysisCovalent Organic Framework Applications

Amorphous Calcium Carbonate Stabilized by a Flexible Biomimetic Polymer Inspired by Marine Mussels

Shasha Wang、An‐Wu Xu2013-04-04Crystal Growth & Design

Organisms make use of amorphous materials as a certain precursor to form insoluble complex biominerals in the presence of various organic matrices. In this article, we demonstrate that amorphous calcium carbonate (ACC) nanoparticles can be highly stabilized by a polymerized dopamine (DA), a biomimetic molecule inspire…

Bone Tissue Engineering MaterialsPolymer Surface Interaction StudiesCalcium Carbonate Crystallization and Inhibition

Finding optimal finite field strengths allowing for a maximum of precision in the calculation of polarizabilities and hyperpolarizabilities

Ahmed A. K. Mohammed、Peter A. Limacher、Benoı̂t Champagne2013-04-04Journal of Computational Chemistry

The finite field method, widely used for the calculation of static dipole polarizabilities or the first and second hyperpolarizabilities of molecules and polymers, is thoroughly explored. The application of different field strengths and the impact on the precision of the calculations were investigated. Borders could b…

Advanced Chemical Physics StudiesNonlinear Optical Materials ResearchElectron Spin Resonance Studies

Group—subgroup relations as an aid for structure determination

Ulrich Müller2013-04-04Oxford University Press eBooks

If X-ray diffraction data do not allow a unique assignment of the space group, but the structure of a similar compound is known, group-subgroup relations can help to decide which space group is correct. If the crystal structure of a protein is known and the space group of crystals of another protein is a subgroup or s…

Protein Structure and DynamicsEnzyme Structure and FunctionX-ray Diffraction in Crystallography

Characterization of composites based on chlorosulfonated polyethylene rubber/chlorinated natural rubber/waste rubber powder rubber blends

Gordana Marković、Milena Marinović‐Cincović、Vojislav Jovanović 等 5 位作者2013-04-04Journal of Thermoplastic Composite Materials

Chlorosulfonated polyethylene rubber (CSM) was blended with chlorinated natural rubber (CNR) with various formulations and blend ratios (CSM/CNR: 100/0; 75/25; 50/50; 25/75; 0/100) keeping the total waste rubber powder (WRP) content constant at 50 phr (parts per 100 rubber). Rheological, mechanical, dynamic mechanical…

Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Science and PVC

Arterial Tissue Regeneration for Pediatric Applications: Inspiration From Up‐to‐Date Tissue‐Engineered Vascular Bypass Grafts

Giorgio Cittadella、Achala de Mel、Ryan Dee 等 5 位作者2013-04-04Artificial Organs

The need for a valid replacement for autologous tissues in vascular surgery has led to the development of tissue-engineered vascular grafts (TEVGs). Currently, only three kinds of TEVG have been used in clinical trials: synthetic scaffold-based TEVGs, self-assembled grafts, and decellularized exogenous tissues. This r…

Electrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative MedicineGraphene and Nanomaterials Applications

Interactions of PAMAM Dendrimers with SDS at the Solid–Liquid Interface

Marianna Yanez Arteta、Felix Eltes、Richard A. Campbell 等 4 位作者2013-04-04Langmuir

This work addresses structural and nonequilibrium effects of the interactions between well-defined cationic poly(amidoamine) PAMAM dendrimers of generations 4 and 8 and the anionic surfactant sodium dodecyl sulfate (SDS) at the hydrophilic silica-water interface. Neutron reflectometry and quartz crystal microbalance w…

Advanced Polymer Synthesis and CharacterizationPolymer Surface Interaction StudiesDendrimers and Hyperbranched Polymers

Glancing angle deposition on a roll: Towards high-throughput nanostructured thin films

Kathleen M. Krause、Michael T. Taschuk、Michael J. Brett2013-04-04Journal of Vacuum Science & Technology A Vacuum Surfaces and Films

Increasing the throughput of the powerful single-step glancing angle deposition (GLAD) method using a prototype simplified roll-to-roll (R2R) system has been explored. While the conventional GLAD technique is popular for fabricating nanostructured devices in a single deposition step, it is not a high-output process. T…

Metal and Thin Film MechanicsOptical Coatings and GratingsNanofabrication and Lithography Techniques

Structural and Electronic Properties of Carbon Nanotubes and Graphenes Functionalized with Cyclopentadienyl–Transition Metal Complexes: A DFT Study

Zongtao Zhang、C. Heath Turner2013-04-04The Journal of Physical Chemistry C

In order to explore possible ways of using metallocene compounds in heterogeneous catalysis and in sensor applications, we present a theoretical characterization of cyclopentadienyl (Cp) + transition metal (TM) complexes adsorbed on boron-doped carbon nanotubes (B-CNTs) and boron-doped graphenes. Using spin-polarized…

Advancements in Battery MaterialsCarbon Nanotubes in CompositesGraphene research and applications

Optical studies of a liquid crystalline compound 6O.6

Kiranmala Thingujam、P. R. Alapati、Basana Choudhury 等 4 位作者2013-04-04Liquid Crystals

A detailed optical study for a Schiff's base liquid crystalline nO.m compound (6O.6) is reported in this article. The phase transition temperatures for the compound were investigated using a polarising microscopy and differential scanning calorimetry (DSC). Refractive index studies were conducted using the thin prism…

Liquid Crystal Research AdvancementsOptical Polarization and EllipsometryMolecular spectroscopy and chirality

Rhombohedral distortion effects on electronic structure of LaCoO3

Y. Lee、B. N. Harmon2013-04-04Journal of Applied Physics

With a first principles method, we have investigated the rhombohedral distortion effects on the electronic structure of LaCoO3. Fixed spin moment calculations show two local minima—a non-magnetic and a ∼1.3μB magnetic state. The energy difference between these states is sensitive to the rhombohedral distortion. The Ge…

Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics

Calcite Crystal Growth by a Solid‐State Transformation of Stabilized Amorphous Calcium Carbonate Nanospheres in a Hydrogel

Assaf Gal、Wouter J. E. M. Habraken、Dvir Gur 等 6 位作者2013-04-04Angewandte Chemie

Das hässliche Entlein wird zum Schwan: Viele Organismen bilden ihre kristalline Mineralphase durch Sekundärnukleation sphärischer amorpher Nanoteilchen. Stabile amorphe Calciumcarbonat-Biomineralien wurden verwendet, um eine ähnliche Umwandlung in vitro auszulösen. Die amorphen Nanosphären gingen eine Festphasenumwand…

Bone Tissue Engineering MaterialsCalcium Carbonate Crystallization and InhibitionLayered Double Hydroxides Synthesis and Applications

Mechanical property evaluation of corrosion protection sol–gel nanocomposite coatings

A Hojjati Najafabadi、Reza Mozaffarinia、Hamed Rahimi 等 5 位作者2013-04-04Surface Engineering

Organic–inorganic nanocomposite coatings were prepared from tetraethylorthosilicate and 3-glycidoxypropyltrimethoxysilane (GPTMS) by sol–gel method. These ormosil films were deposited by dip coating on aluminium alloy 5083. The effect of the concentration of GPTMS on the adhesion, mechanical and corrosion performance…

Corrosion Behavior and InhibitionMetal and Thin Film MechanicsConcrete Corrosion and Durability