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Magneto-LC Effects in Hydrogen-Bonded All-Organic Radical Liquid Crystal

Yoshiaki Uchida、Katsuaki Suzuki、Rui Tamura2012-07-19The Journal of Physical Chemistry B

To identify the origin of the magneto-LC effects, which refer to the enhancement of intermolecular magnetic interactions in the LC phases of all-organic radical compounds, we have designed and synthesized H-bonded all-organic radical compounds showing nematic and cholesteric phases for the first time. They show strong…

Liquid Crystal Research AdvancementsPhotochemistry and Electron Transfer StudiesSynthesis and Properties of Aromatic Compounds

A Mathematical Model of SOFC: A Proposal

J. Milewski2012-07-19Fuel Cells

Abstract The mathematical model of the solid oxide fuel cell (SOFC) is presented. The new approach for modeling the voltage of SOFC is proposed. Electrochemical, thermal, electrical, and flow parameters are collected in the 0D mathematical model. The aim was to combine all cell working conditions in as a low number of…

Electrocatalysts for Energy ConversionAdvancements in Solid Oxide Fuel CellsFuel Cells and Related Materials

Ultra sensitive surface‐enhanced Raman scattering detection based on monolithic column as a new type substrate

Qingqing Li、Yiping Du、Huirong Tang 等 8 位作者2012-07-19Journal of Raman Spectroscopy

A novel ultrasensitive detection method utilizing surface‐enhanced Raman scattering (SERS) based on monolithic column was developed in the present study. Monolithic column is a kind of chromatographic stationary phase that contains highly interconnected pores and absorbs chemical components efficiently. Dropping a mix…

Gold and Silver Nanoparticles Synthesis and ApplicationsBiosensors and Analytical DetectionProtein Interaction Studies and Fluorescence Analysis

Conducting Polyaniline Blends with the Soft Template Poly(Vinyl Pyrrolidone) and their Chemosensor Application

N. Vijayakumar、E. Subramanian、D. Pathinettam Padiyan2012-07-19International Journal of Polymeric Materials

This article reports the influence of poly(vinyl pyrrolidone) (PVP) soft-template without/with p-hydroxybenzoic acid (HBA) on the characteristics and chemosensor application of polyaniline (PANI). PANI and PANI-HBA have micrograins while the PANI-PVP blend exhibits nanostructure; the PANI-PVP-HBA blend has microgranul…

Electrochemical sensors and biosensorsConducting polymers and applicationsAnalytical Chemistry and Sensors

Porous Silicon/Photosynthetic Reaction Center Hybrid Nanostructure

Kata Hajdu、Csilla Gergely、Marta Martin 等 12 位作者2012-07-19Langmuir

The purified photosynthetic reaction center protein (RC) from Rhodobacter sphaeroides R-26 purple bacteria was bound to porous silicon microcavities (PSiMc) either through silane-glutaraldehyde (GTA) chemistry or via a noncovalent peptide cross-linker. The characteristic resonance mode in the microcavity reflectivity…

Mesoporous Materials and CatalysisSilicon Nanostructures and PhotoluminescenceCopper-based nanomaterials and applications

Amphiphiles Based on d -Glucose: Efficient Low Molecular Weight Gelators

Sukhendu Nandi、Hans‐Josef Altenbach、Bernd Jakob 等 8 位作者2012-07-19Organic Letters

A series of novel amphiphiles were synthesized based entirely on renewable resources. Besides their efficacy as supramolecular gelators in a wide variety of organic solvents and also water, their surface properties as surfactants and emulsifiers have been determined. A methodical study revealed that the length of the…

Lipid Membrane Structure and BehaviorSupramolecular Self-Assembly in MaterialsPolydiacetylene-based materials and applications

Synthesis, Characterization, and Catalytic Properties of Novel Single-Site and Nanosized Platinum Catalysts

Matteo L. M. Bonati、Thomas M. Douglas、Sander Gaemers 等 4 位作者2012-07-19Organometallics

Novel single-site platinum catalysts have been synthesized by reacting platinum(II) organometallics with partially dehydroxylated silica. The resulting materials have been characterized by various methods such as IR, MAS NMR, and EXAFS. Further, the single-site platinum catalysts were calcined in air to remove the lig…

Catalytic Processes in Materials ScienceCatalysis and Hydrodesulfurization StudiesCatalysis and Oxidation Reactions

Towards high-frequency negative permeability using magnonic crystals in metamaterial design

M. Mruczkiewicz、Maciej Krawczyk、R. V. Mikhaylovskiy 等 4 位作者2012-07-19Physical Review B

We investigate the magnonic properties of thin slabs of one-dimensional magnonic crystals with the aim of obtaining a structure that possesses negative permeability at high frequencies. Metamaterials of this kind could be used within devices based on the negative refractive index phenomenon. We calculate the relative…

Metamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon ResearchAdvanced Antenna and Metasurface Technologies

High luminescent Li_2CaSiO_4:Eu^2+ cyan phosphor film for wide color gamut field emission display

Xingong Xu、Jun Chen、Shaozhi Deng 等 7 位作者2012-07-19Optics Express

Li(2)CaSiO(4):Eu(2+) cyan phosphor screen for enlarging the color gamut of field emission display has been prepared and characterized. The luminance of Li(2)CaSiO(4):Eu(2+) phosphor film can reach as high as about 12000 cd/m(2) under the conditions of V(a) = 7 kV and J(a) = 2.8 mA/cm(2). The cathodoluminescent spectru…

Luminescence Properties of Advanced MaterialsGas Sensing Nanomaterials and SensorsAcoustic Wave Resonator Technologies

Synthesis and Evaluation of a Peptide Targeted Small Molecular Gd-DOTA Monoamide Conjugate for MR Molecular Imaging of Prostate Cancer

Xueming Wu、Susan M. Burden‐Gulley、Guan-Ping Yu 等 7 位作者2012-07-19Bioconjugate Chemistry

Tumor extracellular matrix has an abundance of cancer related proteins that can be used as biomarkers for cancer molecular imaging. Innovative design and development of safe and effective targeted contrast agents to these biomarkers would allow effective MR cancer molecular imaging with high spatial resolution. In thi…

Nanoparticle-Based Drug DeliveryLanthanide and Transition Metal ComplexesRadiopharmaceutical Chemistry and Applications

Fully Protected Glycosylated Zinc (II) Phthalocyanine Shows High Uptake and Photodynamic Cytotoxicity in MCF‐7 Cancer Cells

Stanley Kimani、Tatiana A. Shmigol、Samantha J. Hammond 等 8 位作者2012-07-19Photochemistry and Photobiology

Phthalocyanine photosensitizers are effective in anticancer photodynamic therapy (PDT) but suffer from limited solubility, limited cellular uptake and limited selectivity for cancer cells. To improve these characteristics, we synthesized isopropylidene-protected and partially deprotected tetra β-glycosylated zinc (II)…

Nanoplatforms for cancer theranosticsPorphyrin and Phthalocyanine ChemistryPhotodynamic Therapy Research Studies

Mesoscopic Model for the Electromagnetic Properties of Arrays of Nanotubes and Nanowires: A Bulk Equivalent Approach

Pierre Franck、Dominique Baillargeat、Beng Kang Tay2012-07-19IEEE Transactions on Nanotechnology

We propose a new bulk approach to the electromagnetic (EM) modeling of nanotubes (NTs) and nanowires (NWs) in arrays or bundles of arbitrary shape and size. The purpose of this model is to enable feasible and efficient EM analysis of electronics designs incorporating these novel materials by using the available softwa…

Carbon Nanotubes in CompositesGraphene research and applicationsMetamaterials and Metasurfaces Applications

On the diffusion of NV defects in diamond

H. Pinto、R. Jones、D. W. Palmer 等 6 位作者2012-07-19physica status solidi (a)

Abstract Besides their importance for quantum information processing, NV defects are crucial agents for the diffusion and aggregation of nitrogen in diamond. In the absence of transition metals, it is thought that the first stage of nitrogen aggregation, where close neighbour nitrogen pairs are formed, is mediated by…

Semiconductor materials and devicesDiamond and Carbon-based Materials ResearchElectronic and Structural Properties of Oxides

Ultraviolet ZnSe1–xSx Gradient-Alloyed Nanocrystals via a Noninjection Approach

Kui Yu、Amy Hrdina、Jianying Ouyang 等 8 位作者2012-07-19ACS Applied Materials & Interfaces

Highly emissive ultraviolet ZnSeS nanocrystals (NCs), with a core-shell-like structure, were designed and synthesized via a one-step noninjection approach in 1-octadecene (ODE). These ultraviolet ZnSeS NCs exhibit bright bandgap emission with high color purity and little trap emission. With full width at half-maximum…

Perovskite Materials and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films

Quantum Dots

作者信息未提供2012-07-19Cambridge University Press eBooks

A comprehensive review of cutting-edge solid state research, focusing on its prominent example - quantum dot nanostructures - this book features a broad range of techniques for fabrication of these nano-structured semiconductors and control of their quantum properties. Written by leading researchers, the book consider…

Quantum Dots Synthesis And Properties

A new massively parallel version of CRYSTAL for large systems on high performance computing architectures

Roberto Orlando、Massimo Delle Piane、Ian J. Bush 等 6 位作者2012-07-19Journal of Computational Chemistry

Fully ab initio treatment of complex solid systems needs computational software which is able to efficiently take advantage of the growing power of high performance computing (HPC) architectures. Recent improvements in CRYSTAL, a periodic ab initio code that uses a Gaussian basis set, allows treatment of very large un…

Advanced Chemical Physics StudiesMachine Learning in Materials ScienceX-ray Diffraction in Crystallography

A Probabilistic Fragment-Based Protein Structure Prediction Algorithm

David Simoncini、Francois Berenger、Rojan Shrestha 等 4 位作者2012-07-19PLoS ONE

Conformational sampling is one of the bottlenecks in fragment-based protein structure prediction approaches. They generally start with a coarse-grained optimization where mainchain atoms and centroids of side chains are considered, followed by a fine-grained optimization with an all-atom representation of proteins. It…

Genomics and Phylogenetic StudiesProtein Structure and DynamicsEnzyme Structure and Function

Anomalous growth of thermoelectric power in gapped graphene

S. G. Sharapov、A. A. Varlamov2012-07-19Physical Review B

There exist experiments indicating that at certain conditions, such as an appropriate substrate, a gap of the order of 10 meV can be opened at the Dirac points of a quasiparticle spectrum of graphene. We demonstrate that the opening of such a gap can result in the appearance of a fingerprint bump of the Seebeck signal…

Graphene research and applicationsThermal properties of materialsSurface and Thin Film Phenomena

New biocomposites based on bioplastic flax fibers and biodegradable polymers

Magdalena Wróbel‐Kwiatkowska、Magdalena Czemplik、Anna Kulma 等 9 位作者2012-07-19Biotechnology Progress

A new generation of entirely biodegradable and bioactive composites with polylactic acid (PLA) or poly-ε-caprolactone (PCL) as the matrix and bioplastic flax fibers as reinforcement were analyzed. Bioplastic fibers contain polyhydroxybutyrate and were obtained from transgenic flax. Biochemical analysis of fibers revea…

Natural Fiber Reinforced Compositesbiodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical Applications

Molecular Exchange in Diblock Copolymer Micelles: Bimodal Distribution in Core-Block Molecular Weights

Jie Lü、Soo‐Hyung Choi、Frank S. Bates 等 4 位作者2012-07-19ACS Macro Letters

The role of core block size dispersity on the rate of molecular exchange in spherical micelles formed from 1% by volume poly(styrene- b -ethylenepropylene) (PS-PEP) diblock copolymers in squalane (C 30 H 62 ) was investigated using time-resolved small-angle neutron scattering (TR-SANS). Separate copolymer solutions (t…

Advanced Polymer Synthesis and CharacterizationPolymer Nanocomposites and PropertiesBlock Copolymer Self-Assembly