6 Non-conventional soft matter
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Water-Soluble Conjugated Oligomers: Effect of Chain Length and Aggregation on Photoluminescence-Quenching Efficiencies
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTWater-Soluble Conjugated Oligomers: Effect of Chain Length and Aggregation on Photoluminescence-Quenching EfficienciesBrent S. Gaylord, Shujun Wang, Alan J. Heeger, and Guillermo C. BazanView Author Information Departments of Chemistry and Materials University of Calif…
Active Packaging for Food Applications
Based on thousands of citations from peer-reviewed, trade, commercial, and patent literature and interviews with those who have worked in the laboratory, in pilot plants, and in production, Active Packaging for Food Applications provides a state-of-the-art guide to understanding and utilizing these technologies. The b…
Electronic structure and bonding in metal phthalocyanines, Metal=Fe, Co, Ni, Cu, Zn, Mg
Electronic structure and bonding in metal phthalocyanines (Metal=Fe, Co, Ni, Cu, Zn, Mg) is investigated in detail using a density functional method. The metal atoms are strongly bound to the phthalocyanine ring in each case, by as much as 10 eV. The calculated orbital energy levels and relative total energies of thes…
Ultraviolet Emission from a Diamond pn Junction
We report the realization of an ultraviolet light-emitting diode with the use of a diamond pn junction. The pn junction was formed from a boron-doped p-type diamond layer and phosphorus-doped n-type diamond layer grown epitaxially on the 111 surface of single crystalline diamond. The pn junction exhibited good diode c…
Cross-Correlation of Nuclear Quadrupolar Interactions as a Probe in Structure Elucidation: Liquid-Phase Nuclear Magnetic Resonance Studies on Bis(hexamethyldisilylamido)mercury(II)
The values of longitudinal nuclear spin relaxation rates for the 199 Hg (spin-1/2) and 14 N (spin-1) nuclei and of the quadrupolar cross-correlation coefficient for the 14 N nuclei are determined for a toluene solution of bis(hexamethyldisilylamido)mercury(II) in a broad temperature range. Estimates of the latter quan…
Syntheses and characterizations of bis(trialkoxysilyl)oligoimides. II. Syntheses and characterizations of fluorinated crosslinkable oligoimides with low refractive indices
Abstract Novel crosslinkable fluorinated oligoimides were prepared in two steps. The first involved the synthesis of oligoimides terminated with nadic or allylic double bonds, and the second step was materialized either by a radical addition of mercaptotrialkoxysilane derivatives onto nadic double bonds or a hydrosily…
Synthesis of chromophore‐embedded polyurethanes for electrooptical materials
Abstract We carried out the polyaddition of dye‐embedded diols with diisocyanates to obtain novel nonlinear optical (NLO) polyurethanes, where the NLO units were embedded in the polymer backbone. The obtained polymers showed high glass‐transition temperatures (138–184 °C) and thermal stability (temperature of 10% weig…
Cooperative processes and upconversion inCs2NaYCl6codoped withOs4+andEr3+
Halide lattices singly doped with ${\mathrm{Os}}^{4+}$ or ${\mathrm{Er}}^{3+}$ are both known to show visible upconversion luminescence upon excitation around 10 000 ${\mathrm{cm}}^{\mathrm{\ensuremath{-}}1}$. In this study, we analyze the cooperative processes in ${\mathrm{Cs}}_{2}{\mathrm{NaYCl}}_{6}$ codoped with $…
Optical properties of chromium(III) in MIIn(MoO4)2hosts, where MI= Li, Na, K, Rb, Cs
Electron absorption, excitation and emission as well as electron spin-resonance spectra were measured for orthorhombic (K, Rb, Cs) and monoclinic (Li, Na) M I Cr x In 1- x (MoO 4 ) 2 ( x = 0.5-2%, M I = Li, Na, K, Rb, Cs) in the temperature range 5-300 K. The local structure of the Cr 3+ ions is discussed on the basis…
Redirection of Oxidation Reactions by a Polyoxomolybdate: Oxydehydrogenation Instead of Oxygenation of Alkanes with tert-Butylhydroperoxide in Acetic Acid
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTRedirection of Oxidation Reactions by a Polyoxomolybdate: Oxydehydrogenation Instead of Oxygenation of Alkanes with tert-Butylhydroperoxide in Acetic AcidAlexander M. Khenkin and Ronny NeumannView Author Information Department of Organic Chemistry Weizmann Institute of…
Thermoluminescence spectra of rare earth doped Ca, Sr and Ba fluorides
The low temperature TL spectra of undoped alkaline earth fluorides consistently show a continuous broad band emission around 280-300 nm. The origin of this emission is related to the relaxation of the self-trapped exciton (STE) in the form of an F-H pair. In doped samples, the broad emission is quenched in favour of e…
Calculation of Relative Binding Free Energy Differences for Fructose 1,6-Bisphosphatase Inhibitors Using the Thermodynamic Cycle Perturbation Approach
An iterative, computer-assisted, drug design strategy that combines molecular design, molecular mechanics, molecular dynamics (MD), and free energy perturbation (FEP) calculations with compound synthesis, biochemical testing of inhibitors, and crystallographic structure determination of protein-inhibitor complexes was…
Avidin-dendrimer-(1B4M-Gd)254: A Tumor-Targeting Therapeutic Agent for Gadolinium Neutron Capture Therapy of Intraperitoneal Disseminated Tumor Which Can Be Monitored by MRI
Peritoneal carcinomatosis is a late stage in cancer progress, for which no effective therapeutic modality exists. Targeting therapeutic agents to disseminated lesions may be a promising modality for treating peritoneal carcinomatosis. Gadolinium ((157,155)Gd) is known to generate Auger and internal conversion electron…
Hybrid Latex Particles Coated with Silica
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Surface Properties, Fibrinogen Adsorption, and Cellular Interactions of a Novel Phosphorylcholine-Containing Self-Assembled Monolayer on Gold
A novel synthetic route for the preparation of a phosphorylcholine terminated thiol is presented. The new molecule was characterized by FTIR and NMR and was used to prepare one- and two-component monolayers rich in phosphorylcholine. The new surfaces had an intermediate hydrophilicity based on their sessile contact an…
Single-filament Composite MgB2/SUS Ribbons by Powder-In-Tube Process
We report the successful fabrication of single-filament composite MgB2/SUS ribbons, as an ultra-robust conductor type, employing the powder-in-tube (PIT) process, by swaging and cold rolling only. The remarkable transport critical current (Ic) of the non-sintered MgB2/SUS ribbon has observed, as an unexpected result.…
Assessment of exchange-correlation functionals for the calculation of dynamical properties of small clusters in TDDFT
We present a detailed study of different exchange-correlation (xc) functionals in describing the dynamical properties of finite systems. For that purpose, we calculated the static polarizabilities, ionization potentials and optical absorption spectrum of four small clusters, Na_2, Na_4, SiH_4 and Si_2H_6, using a real…
A Novel 2D Folding Technique for Enhancing Fermi Surface Signatures in the Momentum Density: Application to Compton Scattering Data from an Al-3at%Li Disordered Alloy
We present a novel technique for enhancing Fermi surface (FS) signatures in the 2D distribution obtained after the 3D momentum density in a crystal is projected along a specific direction in momentum space. These results are useful for investigating fermiology via high resolution Compton scattering and positron annihi…
Two-Dimensional Diffraction of Molecular Nanosheet Crystallites of Titanium Oxide
We have examined two-dimensional diffraction features of novel nanosheet crystallites of quasi-TiO 2 . A single crystallite gave a face-centered orthogonal array of hl diffraction spots representing a 0.38 nm × 0.30 nm periodicity, which reflects the two-dimensional atomic arrangement in the nanosheet. Diffraction col…