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Electronic Properties (electronic + property)
Selected AbstractsA Series of Lithium Rare Earth Polyphosphates [LiLn(PO3)4] (Ln = La, Eu, Gd) and Their Structural, Optical, and Electronic PropertiesEUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 2 2007Jing Zhu Abstract The structural, optical, and electronic properties of a series of lithium rare earth polyphosphates [LiLn(PO3)4] [Ln = La (1), Eu (2), Gd (3)] have been investigated by means of single-crystal X-ray diffraction, elemental analyses, and spectroscopic measurements, as well as calculations of energy-band structures, density of states, and optical response functions by density functional methods. These LiLn(PO3)4 systems are monoclinic with space group C2/c and Z = 4. Their unit-cell parameters decrease as the ionic radius of Ln3+ decreases (La3+ > Eu3+ > Gd3+). Both (PO4)3, zig-zag chains and infinite chains formed by the alternate connection of LnO8 polyhedra and LiO4 tetrahedra run parallel to the b -axis in the structure. The energy-band structures, density of states, the chemical bonds, and optical properties have been investigated by density functional methods for some of the title compounds. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007) [source] Multicomponent Supramolecular Devices: Synthesis, Optical, and Electronic Properties of Bridged Bis-dirhodium and -diruthenium Complexes,EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 19 2006Anne Petitjean Abstract Four ruthenium- and rhodium-based metal,metal-bonded multicomponent systems have been synthesized, and their absorption, redox, spectroelectrochemical and structural properties have been studied. The absorption spectra of the four bis-dimetallic compounds M2LM2, where L is a bridging ligand and M is rhodium or ruthenium, exhibit very strong bands in the UV, visible and, for the diruthenium species, near-IR region. The low-energy absorption bands are assigned to charge-transfer transitions involving a metal,metal bonding orbital as the donor and an orbital centered on the bis-tetradentate aromatic ligands as the acceptor (metal,metal to ligand charge transfer, M2LCT). Each compound exhibits reversible bridging-ligand-centered reductions at mild potentials and several reversible oxidation processes. The oxidation signals of the two equivalent dimetallic centers of each bis-dimetallic compound are split, with the splitting , a measure of the electronic coupling , depending on both the metal and bridging ligand. The mixed-valence species of the dirhodium species was investigated, and the electronic coupling matrix element calculated from the experimental intervalence band parameters for one of them (86 cm,1) indicates a significant inter-component electronic interaction which compares well with good electron conducting anionic bridges such as cyanides. Although none of these compounds is luminescent, the M2LCT excited state of one of the bis-dirhodium complexes is relatively long-lived (about 6 ,s) in degassed acetonitrile at room temperature. The results presented here are promising for the development of linear poly-dimetallic complexes built on longer naphthyridine-based strands, with significant long-range electronic coupling and molecular-wire-like behavior. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006) [source] The Use of Terahertz Spectroscopy as a Sensitive Probe in Discriminating the Electronic Properties of Structurally Similar Multi-Walled Carbon NanotubesADVANCED MATERIALS, Issue 38-39 2009Edward P. J. Parrott Terahertz spectroscopy is used to definitively distinguish between two multiwalled carbon nanotubes (see figure), which have commercial applications in a number of advanced materials. Other techniques do not provide a sensitive discrimination of the measured properties. This observation is rationalized by considering the dielectric nature of the materials and the relationship of this to their structural differences. [source] Electronic Properties at Gold/Conjugated-Polyelectrolyte InterfacesADVANCED MATERIALS, Issue 9 2009Jung Hwa Seo The chemical structures and electronic structures at conjugated polyelectrolyte/Au interfaces demonstrate that conjugated polyelectrolytes with identical backbones but different pendant charges and charge-compensating ions exhibit different electronic properties. This finding shows that counterions and backbone charges enable control of the electronic and chemical nature of critical device interfaces. [source] Electrochemical Polymerisation of N -Arylated and N -Alkylated EDOT-Substituted Pyrrolo[3,4-c]pyrrole-1,4-dione (DPP) Derivatives: Influence of Substitution Pattern on Optical and Electronic PropertiesMACROMOLECULAR RAPID COMMUNICATIONS, Issue 21 2009Kai Zhang Abstract New pyrrolo[3,4-c]pyrrole-1,4-dione (DPP) derivatives carrying 3,4-ethylenedioxy-thiophenylphenyl (EDOT-phenyl) substituent groups in the 3- and 6-position, or in the 2- and 5-position of the DPP chromophore were synthesised and electrochemically polymerised. The properties of the polymers were investigated using cyclic voltammetry and UV/Vis absorption spectroscopy. It was found that the optical and electronic properties differ greatly between the two polymers. Materials with EDOT-phenyl groups in the 3- and 6-positions represent conjugated polymers with a low oxidation potential and reversible electrochromic properties, whereas the polymer with EDOT-phenyl groups in the 2- and 5-positions is non-conjugated and possesses a high oxidation potential and irreversible redox behaviour. [source] ChemInform Abstract: Structural, Mechanical, and Electronic Properties of TaB2, TaB, IrB2, and IrB: First-Principle Calculations.CHEMINFORM, Issue 51 2009Wen Jie Zhao Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Synthesis, Structure, and Magnetic and Electronic Properties of Cs2Hg2USe5.CHEMINFORM, Issue 30 2009Daniel E. Bugaris Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Structural and Electronic Properties of Zinc Blende BxGa1-xN NitridesCHEMINFORM, Issue 13 2009R. Riane Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Structural Stability and Elastic and Electronic Properties of Rhenium Borides: First Principle Investigations.CHEMINFORM, Issue 12 2009Huiyang Gou Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Sterically Demanding, Sulfonated, Triarylphosphines: Application to Palladium-Catalyzed Cross-Coupling, Steric and Electronic Properties, and Coordination Chemistry.CHEMINFORM, Issue 29 2008Lucas R. Moore Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Theoretical Study of the Structural and Electronic Properties of SimGen and SimGen - (s = m + n , 7) Clusters.CHEMINFORM, Issue 25 2008Dan Bing Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: First-Principles Calculations of the Elastic and Electronic Properties of the Cubic Perovskites SrMO3 (M: Ti, V, Zr and Nb) in Comparison with SrSnO3.CHEMINFORM, Issue 22 2008I. R. Shein Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Magnetic and Electronic Properties of CaCu3Cr4O12 and CaCu3Cr2Sb2O12 by First-Principles Density Functional Calculation.CHEMINFORM, Issue 5 2008H. P. Xiang Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] Density Functional Study of Structural and Electronic Properties of Small Bimetallic Silver,Nickel ClustersCHEMINFORM, Issue 44 2007M. Harb Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] Structures and Electronic Properties of Al7X0,- and Al13X1,2,12 - Clusters with X: F, Cl, and BrCHEMINFORM, Issue 33 2007Jiao Sun Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] First-Principles Calculations of the Structural and Electronic Properties of Cu3MN Compounds with M: Ni, Cu, Zn, Pd, Ag, and Cd.CHEMINFORM, Issue 20 2007Ma. Guadalupe Moreno-Armenta Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] Structural and Electronic Properties of Hetero-Transition-Metal Keggin Anions: A DFT Study of ,/,-[XW12O40]n- (X: CrVI, VV, TiIV, FeIII, CoIII, NiIII, CoII, and ZnII) Relative Stability.CHEMINFORM, Issue 16 2007Fu-Qiang Zhang Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] Topotactic Intercalation of a Metallic Dense Host Matrix Chalcogenide with Large Electron,Phonon Coupling: Crystal Structures and Electronic Properties of LixMo2SbS2 (0 , x , 0.7).CHEMINFORM, Issue 15 2007Alexandros Lappas Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] A Series of Lithium Rare Earth Polyphosphates [LiLn(PO3)4] (Ln: La, Eu, Gd) and Their Structural, Optical, and Electronic Properties.CHEMINFORM, Issue 13 2007Jing Zhu Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] Density Functional Theory Study of Geometrical Structures and Electronic Properties of Silica Nanowires.CHEMINFORM, Issue 12 2007Dongju Zhang Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] First Syntheses and Electronic Properties of (Oligo)phenothiazine,C60 Dyads.CHEMINFORM, Issue 2 2007Nadine Bucci Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] Synthesis and Electronic Properties of (Oligo)phenothiazine-ethynyl-hydro-C60 Dyads.CHEMINFORM, Issue 2 2007Nadine Bucci Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] Structural and Electronic Properties of Bulk Gibbsite and Gibbsite SurfacesCHEMINFORM, Issue 29 2005Johannes Frenzel Abstract For Abstract see ChemInform Abstract in Full Text. [source] Theoretical Investigation of the Influence of Ligands on Structural and Electronic Properties of Indium Phosphide Clusters.CHEMINFORM, Issue 18 2005Sudip Roy No abstract is available for this article. [source] Electronic Properties and Chemical Bonding of Single-Walled MoO3 NanotubesCHEMINFORM, Issue 34 2004Andrei N. Enyashin Abstract For Abstract see ChemInform Abstract in Full Text. [source] Inorganic Electride: Theoretical Study on Structural and Electronic Properties.CHEMINFORM, Issue 29 2003Zhenyu Li No abstract is available for this article. [source] Electronic Properties of Polyoxometalates: Electron and Proton Affinity of Mixed-Addenda Keggin and Wells,Dawson Anions.CHEMINFORM, Issue 2 2003Xavier Lopez Abstract For Abstract see ChemInform Abstract in Full Text. [source] ChemInform Abstract: Synthesis, Structural Trends, and Physical and Electronic Properties of the Reduced Molybdenum Oxides Ln4Mo4O11 (Ln: Nd,Tm and Y) Containing Infinite Chains of trans-Edge-Shared Octahedral Clusters.CHEMINFORM, Issue 33 2002P. Gall Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Synthesis and Electronic Properties of Th,N Films.CHEMINFORM, Issue 27 2002T. Gouder Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Electronic Properties of the Silver,Silver Chloride Cluster Interface.CHEMINFORM, Issue 25 2002Stephan Glaus Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] | ||||||||||||||||||||||||||||||||||