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ChemInform Abstract: Synthesis of Annulated Oligothiophenes.

Valentine G. Nenajdenko、Е. С. Баленкова、Konstantin Chernichenko 等 4 位作者2013-10-24ChemInform

Abstract In addition to the high temperature protocol for the synthesis of the title compounds an alternative method for the preparation of helicene is developed.

Synthesis and Properties of Aromatic CompoundsOrigins and Evolution of LifePhotochromic and Fluorescence Chemistry

ChemInform Abstract: New Layered Fluorosulfide SrFBiS2.

Hechang Lei、Kefeng Wang、Milinda Abeykoon 等 5 位作者2013-10-24ChemInform

Abstract The title compound is prepared by solid state reaction of Bi2S3 (obtained from the elements at 600 °C for 10 h), SrF2, and SrS (600 °C, 10 h).

Crystal Structures and PropertiesIron-based superconductors researchInorganic Chemistry and Materials

ChemInform Abstract: Triple‐Layered Perovskite Niobates CaRNb3O10 (R: La, Sm, Eu, Gd, Dy, Er, Yb, or Y): New Self‐Activated Oxides.

Lin Qin、Donglei Wei、Yanlin Huang 等 6 位作者2013-10-24ChemInform

Abstract The title compounds are synthesized by solid state reactions of stoichiometric mixtures of CaCO3, Nb2O5, and Ln2O3 (Ln: La, Sm, Eu, Gd, Dy, Er, Yb, Y) at 1300—1350 °C for 20—48 h twice.

Luminescence Properties of Advanced MaterialsLayered Double Hydroxides Synthesis and ApplicationsMicrowave Dielectric Ceramics Synthesis

Minority-spin $t_{2g}$ states and the degree of spin polarization in\n ferromagnetic metallic La$_{2-2x}$Sr$_{1+2x}$Mn$_2$O$_7$ ($x=0.38$)

Zhe Sun、Q. Wang、J. F. Douglas 等 13 位作者2013-10-24arXiv (Cornell University)

Using angle-resolved photoemission spectroscopy (ARPES), we investigate the\nelectronic band structure and Fermi surface of ferromagnetic\nLa$_{2-2x}$Sr$_{1+2x}$Mn$_2$O$_7$ ($x=0.38$). Besides the expected two hole\npockets and one electron pocket of majority-spin $e_g$ electrons, we show an\nextra electron pocket aro…

Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsElectronic and Structural Properties of Oxides

Temperature dependence of crystal field excitations in CuO

Simo Huotari、Laura Simonelli、Christoph J. Sahle 等 6 位作者2013-10-24arXiv (Cornell University)

We report a study on the temperature dependence of the charge-neutral crystal field (dd) excitations in cupric oxide, using nonresonant inelastic x-ray scattering (IXS) spectroscopy. Thanks to a very high energy resolution (60 meV), we observe thermal effects on the dd excitation spectrum fine structure between temper…

Physics of Superconductivity and MagnetismHigh-pressure geophysics and materialsX-ray Diffraction in Crystallography

Temperature Dependence of Alkali-Metal Rattling Dynamics in the {\beta}-Pyrochlores, AOs2O6 (A = K, Rb, Cs), from MD Simulation

Elvis Shoko、Vanessa K. Peterson、Gordon J. Kearley2013-10-24arXiv (Cornell University)

We investigate the temperature response of the alkali-metal rattling modes in {\beta}-pyrochlores, AOs2O6 (A = K, Rb, Cs), from the results of ab initio molecular dynamics (MD) simulations performed at 20 K, 100 K, and 300 K. Our results show that the temperature response of the T1u mode is clearly different from that…

Advanced Condensed Matter PhysicsNuclear materials and radiation effectsChemical Synthesis and Characterization

ChemInform Abstract: Tunable Blue‐Green‐Emitting Ba3LaNa (PO4)3F:Eu2+,Tb3+ Phosphor with Energy Transfer for Near‐UV White LEDs.

Mengmeng Jiao、Ning Guo、Lue Wei 等 8 位作者2013-10-24ChemInform

Abstract A series of (Ba1‐mEum) 3La1‐nTbnNa(PO4)3F (m = 0—0.07; n = 0—0.60) phosphors are prepared by solid state reaction of BaCO3, BaF2, La2O3, Na2CO3, NH4H2PO4, Eu2O3, and Tb4O7 (20% H2/80% N2, 1050 °C, 3 h).

Luminescence Properties of Advanced MaterialsAmmonia Synthesis and Nitrogen ReductionMicrowave Dielectric Ceramics Synthesis

ChemInform Abstract: Imidazolium‐Based Organic—Inorganic Hybrid Silica as a Functional Platform Dramatically Boosts Chiral Organometallics Performance in Asymmetric Catalysis.

Daquan Xia、Tanyu Cheng、Wei Xiao 等 8 位作者2013-10-24ChemInform

Abstract Chiral rhodium and nickel catalysts immobilized on a phase‐transfer featured, imidazolium‐based, organic‐inorganic hybrid silica are applied to the asymmetric transfer hydrogenation of ketones and the asymmetric Michael addition of diethyl malonate.

Mesoporous Materials and CatalysisAsymmetric Hydrogenation and CatalysisSurface Chemistry and Catalysis