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Effect of Organo-Modified Nanoclay on the Thermal and Bulk Structural Properties of Poly(3-hydroxybutyrate)-Epoxidized Natural Rubber Blends: Formation of Multi-Components Biobased Nanohybrids

Ali Salehabadi、M. Abu Bakar、Noor Hana Hanif Abu Bakar2014-06-13Materials

Multi-component nanohybrids comprising of organo-modified montmorillonite (MMT) and immiscible biopolymer blends of poly(3-hydroxybutyrate) (PHB) and epoxidized natural rubber (ENR-50) were prepared by solvent casting technique. The one and three dimensional morphology of PHB/ENR-50/MMT systems were studied using Pola…

Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesPolymer composites and self-healing

MARTINI bead form factors for the analysis of time-resolved X-ray scattering of proteins

Stephan Niebling、Alexander Björling、Sebastian Westenhoff2014-06-13Journal of Applied Crystallography

Time-resolved small- and wide-angle X-ray scattering (SAXS and WAXS) methods probe the structural dynamics of proteins in solution. Although technologically advanced, these methods are in many cases limited by data interpretation. The calculation of X-ray scattering profiles is computationally demanding and poses a bo…

Protein Structure and DynamicsMass Spectrometry Techniques and ApplicationsEnzyme Structure and Function

Surface Asymmetry of Coated Spherical Nanoparticles

Amelie H. R. Koch、Gaëtan Lévêque、Sebastian Harms 等 9 位作者2014-06-13Nano Letters

We validate the nonspherical grafting arrangement of isotropically coated spherical nanoparticles as very recently proposed. We utilize localized surface plasmon resonance enhanced dynamic polarized and depolarized light scattering from Au nanoparticles, the spherical symmetry of which was revealed by single-particle…

Nanoparticle-Based Drug DeliveryGold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon Research

Hydrogen-Bonded Polymers with Bent-Shaped Side Chains and Poly(4-vinylpridine) Backbone: Phase Behavior and Thin Film Morphologies

Xiaoshan Liu、Xiaofang Chen、Jingkui Wang 等 5 位作者2014-06-13Macromolecules

We investigate the self-assembly behavior of a series of supramolecular hydrogen bonded polymer complexes P4VP(nCBP) x in which bent-shaped molecules (nCBP, n = 10,12,14) are attached to a poly(4-vinylpridine) (P4VP) backbone via hydrogen bond interaction in both bulk and thin films. The formation of lamellar and hexa…

Advanced Polymer Synthesis and CharacterizationSupramolecular Self-Assembly in MaterialsBlock Copolymer Self-Assembly

Koksharovite, CaMg2Fe3+4(VO4)6, and grigorievite, Cu3Fe3+ 2Al2(VO4)6, two new howardevansite-group minerals from volcanic exhalations

Igor V. Pekov、Natalia V. Zubkova、Vasiliy O. Yapaskurt 等 7 位作者2014-06-13European Journal of Mineralogy

Two new howardevansite-group minerals were discovered in the exhalations of fumaroles related to two volcanoes in Kamchatka, Russia. Koksharovite, CaMg2Fe 3þ 4(VO4)6, is found at the Bezymyannyi volcano in association with bannermanite. Grigorievite, Cu3Fe 3þ 2Al2(VO4)6, associated with bannermanite, ziesite, hematite…

Crystal Structures and PropertiesNuclear materials and radiation effectsX-ray Diffraction in Crystallography

Electrically Tunable Liquid Crystal Lenses and Applications

Yi‐Hsin Lin、Hung-Shan Chen、Ming-Syuan Chen2014-06-13Molecular Crystals and Liquid Crystals

Electrically tunable liquid crystal (LC) lenses have been studied for over 30 years. Three main problems of LC lenses hinder the applications: 1) the paradox between the response time and tunable focusing range, 2) polarization dependency, and 3) large aperture size for ophthalmic lenses. In this paper, we introduce t…

Liquid Crystal Research AdvancementsAdvanced Optical Imaging TechnologiesElectrowetting and Microfluidic Technologies

Fabrication of lightweight, flexible polyetherimide/nickel composite foam with electromagnetic interference shielding effectiveness reaching 103 dB

Wentao Zhai、Yuejuan Chen、Jianqiang Ling 等 5 位作者2014-06-13Journal of Cellular Plastics

The preparation of lightweight materials with electromagnetic interference-shielding effectiveness higher than 30 dB is critical for most industrial and consumer applications. Compounding polymer resin with conductive filler can generate excellent electromagnetic interference-shielding effectiveness but usually leads…

Cellular and Composite StructuresElectromagnetic wave absorption materialsFlame retardant materials and properties

Ice Adhesion Strength on Hydrophobic and Superhydrophobic Coatings

Yong Han Yeong、Eric Loth、Jack Sokhey 等 4 位作者2014-06-13OpenAlex

Superhydrophobic coatings have shown promise in reducing both ice accretion and accumulation on a surface. However, recent studies revealed conflicting reports of ice adhesion strength on superhydrophobic surfaces. Therefore, a comprehensive experiment was conducted to measure the ice adhesion strength of a variety of…

Surface Modification and SuperhydrophobicityAdhesion, Friction, and Surface InteractionsIcing and De-icing Technologies

Synthesis, Thermal and Morphological Properties of Polyurethanes Containing Azomethine Linkage

Musa Kamacı、İsmet Kaya2014-06-13Journal of Inorganic and Organometallic Polymers and Materials

This paper presents synthesis, photophysical, electrochemical, thermal and morphological properties of Schiff bases containing various side-group substitutions and polyurethanes (PUs) containing azomethine linkage. Morphological properties of PUs containing azomethine bonding were investigated by scanning electron mic…

Conducting polymers and applicationsPolymer composites and self-healingSynthesis and properties of polymers

Vibronic Raman Scattering at the Quantum Limit of Plasmons

Patrick Z. El‐Khoury、Wayne P. Hess2014-06-13Nano Letters

We record sequences of Raman spectra at a plasmonic junction formed by a gold AFM tip in contact with a silver surface coated with 4,4'-dimercaptostilbene (DMS). A 2D correlation analysis of the recorded trajectories reveals that the observable vibrational states can be divided into subsets, by virtue of the symmetry…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchMolecular Junctions and Nanostructures

Acetone‐Based Cellulose Solvent

Marc Kostag、Tim Liebert、Thomas Heinze2014-06-13Macromolecular Rapid Communications

Acetone containing tetraalkylammonium chloride is found to be an efficient solvent for cellulose. The addition of an amount of 10 mol% (based on acetone) of well-soluble salt triethyloctylammonium chloride (Et3 OctN Cl) adjusts the solvent's properties (increases the polarity) to promote cellulose dissolution. Cellulo…

Advanced Cellulose Research StudiesEnzyme-mediated dye degradationLignin and Wood Chemistry

Controlled Hierarchical Assembly of Spider Silk-DNA Chimeras into Ribbons and Raft-Like Morphologies

Martin Humeník、Markus Drechsler、Thomas Scheibel2014-06-13Nano Letters

Spider silk-DNA conjugates comprising the recombinant spider silk protein eADF4(C16) and short oligonucleotides were arranged in a linear antiparallel and parallel as well as in a branched manner via designed complementarity of the DNA moieties. After cross-β fibril self-assembly, temperature-induced annealing of the…

RNA Interference and Gene DeliverySupramolecular Self-Assembly in MaterialsSilk-based biomaterials and applications

Cryogenic neutron protein crystallography: routine methods and potential benefits

Leighton Coates、Stephen J. Tomanicek、Tobias E. Schrader 等 7 位作者2014-06-13Journal of Applied Crystallography

The use of cryocooling in neutron diffraction has been hampered by several technical challenges, such as the need for specialized equipment and techniques. This article reports the recent development and deployment of equipment and strategies that allow routine neutron data collection on cryocooled crystals using off-…

Protein Structure and DynamicsEnzyme Structure and FunctionNuclear Physics and Applications

Novel Chemical Synthesis and Characterization of CeTi2O6 Brannerite

Linggen Kong、Daniel J. Gregg、Inna Karatchevtseva 等 8 位作者2014-06-13Inorganic Chemistry

Cerium titanate CeTi2O6 was prepared by a new soft chemistry route in aqueous solution. A suite of characterization techniques, including X-ray diffraction, thermal analysis, vibrational spectroscopy, and scanning and transmission electron spectroscopy, were employed to investigate the brannerite structure formation a…

Advanced materials and compositesNuclear materials and radiation effectsInorganic Chemistry and Materials

Physical Mechanisms of Fatigue in Neat Polyamide 6,6

Elodie Mourglia-Seignobos、Didier Long、Ludovic Odoni 等 6 位作者2014-06-13Macromolecules

The fatigue durability of polyamide 6,6 has been studied for various maximal stresses. We focus on the identification of the microscopic mechanisms responsible for damaging in fatigue regime. We show that the apparent stiffness, or dynamic modulus, decreases linearly as a function of the logarithm of the number of cyc…

Mechanical Behavior of CompositesPolymer crystallization and propertiesProbabilistic and Robust Engineering Design

Substrate-Independent Lamellar Orientation in High-Molecular-Weight Polystyrene-b-poly(methyl methacrylate) Films: Neutral Solvent Vapor and Thermal Annealing Effect

Eun Young Choi、Sungmin Park、Hyungju Ahn 等 7 位作者2014-06-13Macromolecules

Lamellar microdomain orientation in polystyrene- b -poly(methyl methacrylate) (PS- b -PMMA) films was controlled by a solvent vapor annealing process, where the high-molecular-weight block copolymer (BCP) was used to self-assemble in a large period of 105 nm. A neutral solvent annealing with tetrahydrofuran vapor scre…

Advanced Polymer Synthesis and CharacterizationPolymer Surface Interaction StudiesBlock Copolymer Self-Assembly

Anisotropic highly-conductive films of poly(3-methylthiophene) from epitaxial electropolymerization on oriented poly(vinylidene fluoride)

Dianming Sun、Yongxiu Li、Zhongjie Ren 等 6 位作者2014-06-13Chemical Science

Electrochemical polymerization of 3-methylthiophene on highly oriented poly(vinylidene fluoride) (PVDF) film was achieved by cyclic voltammetry to yield well-ordered poly(3-methylthiophene) (P3MT) thin films with anisotropic structural and conductivity properties. The conductivity of P3MT along the direction perpendic…

Organic Electronics and PhotovoltaicsAdvanced Sensor and Energy Harvesting MaterialsConducting polymers and applications

Pressure-induced polar phases in multiferroic delafossiteCuFeO2

Noriki Terada、D. D. Khalyavin、Pascal Manuel 等 6 位作者2014-06-13Physical Review B

Using a unique experimental setup allowing neutron diffraction measurements at pressures up to 10 GPa, the collaboration of authors from Japan and UK investigate pressure-induced magnetic phase transitions in CuFeO${}_{2}$ -- a triangular lattice antiferromagnet that exhibits multiferroic behavior.

ZnO doping and propertiesMultiferroics and related materialsAdvanced Condensed Matter Physics

Synergetic Effect of Randomly Methylated β-Cyclodextrin and a Supramolecular Hydrogel in Rh-Catalyzed Hydroformylation of Higher Olefins

Jonathan Potier、Stéphane Menuel、Éric Monflier 等 4 位作者2014-06-13ACS Catalysis

A significant improvement in Rh-catalyzed hydroformylation of very hydrophobic alkenes was achieved using a biphasic catalytic system consisting of a substrate-containing organic phase and a catalyst-containing hydrogel phase [consisting of poly(ethylene glycol) 20000 (PEG20000) and α-cyclodextrin (α-CD)]. The catalyt…

Hydrogels: synthesis, properties, applicationsPolymer Surface Interaction StudiesPickering emulsions and particle stabilization

Enhanced upconversion in novel KLu_2F_7:Er^3+ transparent oxyfluoride glass-ceramics

YunLe Wei、XiaoMan Li、Hai Guo2014-06-13Optical Materials Express

Novel Er3+ doped highly transparent glass-ceramics containing orthorhombic KLu2F7 nanocrystals (24 nm in diameter) have been successfully fabricated for the first time. Their structural, optical and upconversion properties are systematically investigated by XRD, TEM, absorption spectra, upconversion spectra and lifeti…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsSolid State Laser Technologies