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Solid-State Ligand-Driven Light-Induced Spin Change at Ambient Temperatures in Bis(dipyrazolylstyrylpyridine)iron(II) Complexes

Kazuhiro Takahashi、Yuta Hasegawa、Ryota Sakamoto 等 7 位作者2012-04-11Inorganic Chemistry

We previously reported that an Fe(II) complex ligated by two (Z)-2,6-di(1H-pyrazol-1-yl)-4-styrylpyridine ligands (Z-H) presented a solid state ligand-driven light-induced spin change (LD-LISC) upon one-way Z-to-E photoisomerization, although modulation of the magnetism was trivial at ambient temperatures (Chem. Commu…

Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms

A New Ammine Dual‐Cation (Li, Mg) Borohydride: Synthesis, Structure, and Dehydrogenation Enhancement

Weiwei Sun、Xiaowei Chen、Qinfen Gu 等 7 位作者2012-04-11Chemistry - A European Journal

A new ammine dual-cation borohydride, LiMg(BH(4))(3)(NH(3))(2), has been successfully synthesized simply by ball-milling of Mg(BH(4))(2) and LiBH(4)·NH(3). Structure analysis of the synthesized LiMg(BH(4))(3)(NH(3))(2) revealed that it crystallized in the space group P6(3) (no. 173) with lattice parameters of a=b=8.00…

Hydrogen Storage and MaterialsBoron and Carbon Nanomaterials ResearchSuperconductivity in MgB2 and Alloys

Computational Modeling of Plasmon-Enhanced Light Absorption in a Multicomponent Dye Sensitized Solar Cell

Hanning Chen、Martin G. Blaber、Stacey D. Standridge 等 7 位作者2012-04-11The Journal of Physical Chemistry C

Plasmon-enhanced light absorption in a multicomponent Ag/Ag 2 O/TiO 2 /N3 dye-sensitized solar cell (DSSC) core–shell nanostructure is studied using a hybrid quantum mechanics/classical electrodynamics (QM/ED) methodology in which the Ag/Ag 2 O/TiO 2 nanostructure is treated by the finite-difference time-domain method…

TiO2 Photocatalysis and Solar CellsGold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And Properties

Enabling Universal Memory by Overcoming the Contradictory Speed and Stability Nature of Phase-Change Materials

Weijie Wang、Desmond K. Loke、Luping Shi 等 11 位作者2012-04-11Scientific Reports

The quest for universal memory is driving the rapid development of memories with superior all-round capabilities in non-volatility, high speed, high endurance and low power. Phase-change materials are highly promising in this respect. However, their contradictory speed and stability properties present a key challenge…

Advanced Memory and Neural ComputingChalcogenide Semiconductor Thin FilmsPhase-change materials and chalcogenides

Heteroleptic Silylamido Phenolate Complexes of Calcium and the Larger Alkaline Earth Metals: β‐Agostic Ae⋅⋅⋅SiH Stabilization and Activity in the Ring‐Opening Polymerization of L‐Lactide

Bo Liu、Thierry Roisnel、Jean‐Paul Guégan 等 5 位作者2012-04-11Chemistry - A European Journal

The factors governing the stability and the reactivity towards cyclic esters of heteroleptic complexes of the large alkaline earth metals (Ae) have been probed. The synthesis and stability of a family of heteroleptic silylamido and alkoxide complexes of calcium [{LO(i)}Ca-Nu(thf)(n)] supported by mono-anionic amino et…

Organometallic Complex Synthesis and Catalysisbiodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis

Improvement in toughness and heat resistance of poly(lactic acid)/polycarbonate blend through twin‐screw blending: Influence of compatibilizer type

Y. Wang、Shu‐Min Chiao、Tsu-Han Hung 等 4 位作者2012-04-11Journal of Applied Polymer Science

Abstract The thermal mechanical properties and morphological changes of modified poly(lactic acid) (PLA) and polycarbonate (PC) polymer blends based on the equal weight fraction of each component were investigated. Several blend samples were prepared by melt processing with a twin screw extruder using both poly(butyle…

Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis

Brightening of the Lowest Exciton in Carbon Nanotubes via Chemical Functionalization

Svetlana Kilina、Jessica Ramirez、Sergei Tretiak2012-04-11Nano Letters

Using time-dependent density functional theory, we found that chemical functionalization at low concentrations of single-walled carbon nanotubes (SWNTs) locally alters the π-conjugated network of the nanotube surface and leads to a spatial confinement of the electronically excited wave functions. Depending on the adso…

Carbon Nanotubes in CompositesGraphene research and applicationsMechanical and Optical Resonators

New-Type Planar Field Emission Display with Superaligned Carbon Nanotube Yarn Emitter

Peng Liu、Yang Wei、Kai Liu 等 6 位作者2012-04-11Nano Letters

With the superaligned carbon nanotube yarn as emitter, we have fabricated a 16 × 16 pixel field emission display prototype by adopting screen printing and laser cutting technologies. A planar diode field emission structure has been adopted. A very sharp carbon nanotube yarn tip emitter can be formed by laser cutting.…

Carbon Nanotubes in CompositesNeuroscience and Neural EngineeringNanotechnology research and applications

Ferromagnetic insulating state in tensile-strained LaCoO3thin films from LDA+Ucalculations

Han Hsu、Peter Blaha、Renata M. Wentzcovitch2012-04-11Physical Review B

With local density approximation$+$Hubbard $U$ (LDA+$U$) calculations, we show that the ferromagnetic (FM) insulating state observed in tensile-strained LaCoO${}_{3}$ epitaxial thin films is most likely a mixture of low-spin (LS) and high-spin (HS) Co, namely, a HS/LS mixture state. Compared with other FM states, incl…

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

Huge local field enhancement in perfect plasmonic absorbers

M. Albooyeh、C. R. Simovski2012-04-11arXiv

In this Letter we theoretically study the possibility of total power absorption of light in a planar grid modelled as an effective sheet with zero optical thickness. The key prerequisite of this effect is the simultaneous presence of both resonant electric and magnetic modes in the structure. We show that the needed l…

Materials Sciencephysics.optics

Tunable Band Gaps of Mono-layer Hexagonal BNC Heterostructures

Qing Peng、Amir Zamiri、Suvranu De2012-04-11arXiv

Bandgap engineering by substituting C with B and N atoms in graphene has been shown to be a promising way to improve semiconducting properties of graphene. Such hybridized monolayers consisting of hexagonal BN phases in graphene (h-BNC) have been recently synthesized and char- acterized. In this paper, we present an a…

Materials Science

Effect of Nanoclay Loading on the Thermal and Mechanical Properties of Biodegradable Polylactide/Poly[(butylene succinate)-co-adipate] Blend Composites

Vincent Ojijo、Suprakas Sinha Ray、Emmanuel Rotimi Sadiku2012-04-11ACS Applied Materials & Interfaces

Polylactide/poly[(butylene succinate)-co-adipate] (PLA/PBSA)-organoclay composites were prepared via melt compounding in a batch mixer. The weight ratio of PLA to PBSA was kept at 70:30, while the weight fraction of the organoclay was varied from 0 to 9%. Small angle X-ray scattering patterns showed slightly better di…

Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties

A viscoplastic theory of shape memory polymer fibres with application to self-healing materials

Guoqiang Li、Amir Shojaei2012-04-11Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences

The difficulty in healing structural damage is that most existing schemes need external help to bring the fractured surfaces in contact before healing can occur. To facilitate the existing schemes to heal macroscopic cracks, we envision that the cracked surfaces can be brought in contact through constrained shape reco…

Polymer composites and self-healingSynthetic Organic Chemistry MethodsInnovations in Concrete and Construction Materials

Driving Forces of Conformational Changes in Single-Layer Graphene Oxide

Raymond L. D. Whitby、В.М. Гунько、Alina V. Korobeinyk 等 12 位作者2012-04-11ACS Nano

The extensive oxygen-group functionality of single-layer graphene oxide proffers useful anchor sites for chemical functionalization in the controlled formation of graphene architecture and composites. However, the physicochemical environment of graphene oxide and its single-atom thickness facilitate its ability to und…

Graphene research and applicationsNanopore and Nanochannel Transport StudiesGraphene and Nanomaterials Applications

Porous graphene: Properties, preparation, and potential applications

Pengtao Xu、Jixiang Yang、KeSai Wang 等 5 位作者2012-04-11Chinese Science Bulletin

Graphene has recently emerged as an important and exciting material. Inspired by its outstanding properties, many researchers have extensively studied graphene-related materials both experimentally and theoretically. Porous graphene is a collection of graphene-related materials with nanopores in the plane. Porous grap…

Advancements in Battery MaterialsGraphene research and applicationsSupercapacitor Materials and Fabrication

Slow Magnetic Relaxation Induced by a Large Transverse Zero-Field Splitting in a MnIIReIV(CN)2 Single-Chain Magnet

Xiaowen Feng、Junjie Liu、T. David Harris 等 5 位作者2012-04-11Journal of the American Chemical Society

The model compounds (NBu(4))(2)[ReCl(4)(CN)(2)] (1), (DMF)(4)ZnReCl(4)(CN)(2) (2), and [(PY5Me(2))(2)Mn(2)ReCl(4)(CN)(2)](PF(6))(2) (3) have been synthesized to probe the origin of the magnetic anisotropy barrier in the one-dimensional coordination solid (DMF)(4)MnReCl(4)(CN)(2) (4). High-field electron paramagnetic r…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesOrganic and Molecular Conductors Research

Optical Properties of Bismuth Tellurite Based Glass

Hooi Ming Oo、Halimah Mohamed-Kamari、Wan Mohd Daud Wan-Yusoff2012-04-11International Journal of Molecular Sciences

A series of binary tellurite based glasses (Bi(2)O(3))(x) (TeO(2))(100-) (x) was prepared by melt quenching method. The density, molar volume and refractive index increase when bismuth ions Bi(3+) increase, this is due to the increased polarization of the ions Bi(3+) and the enhanced formation of non-bridging oxygen (…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsPhase-change materials and chalcogenides

Comparison of dynamical decoupling protocols for a nitrogen-vacancy center in diamond

Zhi‐Hui Wang、G. de Lange、Diego Ristè 等 5 位作者2012-04-11Physical Review B

We perform a detailed theoretical-experimental study of the dynamical decoupling (DD) of the nitrogen-vacancy (NV) center in diamond. We investigate the DD sequences applied to suppress the dephasing of the electron spin of the NV center induced by the coupling to a spin bath composed of the substitutional nitrogen at…

High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchQuantum optics and atomic interactions

Chemically Modified Graphene/Polyimide Composite Films Based on Utilization of Covalent Bonding and Oriented Distribution

Ting Huang、Renguo Lü、Chao Su 等 9 位作者2012-04-11ACS Applied Materials & Interfaces

Herein, we have developed a rather simple composite fabrication approach to achieving molecular-level dispersion and planar orientation of chemically modified graphene (CMG) in the thermosetting polyimide (PI) matrix as well as realizing strong adhesion at the interfacial regions between reinforcing filler and matrix.…

Graphene research and applicationsAdvanced Sensor and Energy Harvesting MaterialsSynthesis and properties of polymers

Poly(lactic acid)‐modified films for food packaging application: Physical, mechanical, and barrier behavior

Valentina Siracusa、Ignazio Blanco、Santina Romani 等 6 位作者2012-04-11Journal of Applied Polymer Science

Abstract Poly(lactic acid) (PLA) is now a very attractive polymer for food packaging application because in addition of being thermoplastic, biodegradable, compostable, and produced from renewable resources, it shows same behavior in mechanical, thermal, and barrier properties comparable to the most used synthetic pol…

biodegradable polymer synthesis and propertiesMicroplastics and Plastic PollutionCarbon dioxide utilization in catalysis