Vikki Chin Quee-Smith、Lisa DelPizzo、Sharon H. Jureller 等 5 位作者1996-01-01Inorganic Chemistry
A novel manganese(IV) monomer, [Mn(IV)(Me(3)TACN)(OMe)(3)](PF(6)), has been synthesized in methanol by the reaction of MnCl(2) with the ligand, N,N',N"-trimethyl-1,4,7-triazacyclononane (Me(3)TACN), in the presence of Na(2)O(2). The resulting product was isolated as the red/brown crystalline hexafluorophosphate salt.…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
Alain Giraudeau、Laurent Ruhlmann、L. El Kahef 等 4 位作者1996-01-01Journal of the American Chemical Society
The electrochemical synthesis of linear symmetrical octaethylporphyrin−octaethylporphyrin and unsymmetrical tetraphenylporphyrin−octaethylporphyrin dimeric porphyrins with one viologen as a spacer and of their precursor porphyrin monomers is reported. The mechanism of the electrochemical substitution leading to the di…
Photosynthetic Processes and MechanismsPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
Allan S. Hoffman1996-01-01Macromolecular Symposia
Abstract The principal objectives and methods of surface modification of polymers are reviewed in this paper. The techniques covered include physical, chemical, mechanical and biological methods.
Surface Modification and SuperhydrophobicityAdditive Manufacturing and 3D Printing TechnologiesAdvanced Surface Polishing Techniques
Richard P. N. Veregin、Peter G. Odell、Lora M. Michalak 等 4 位作者1996-01-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTMechanism of Rate Enhancement Using Organic Acids in Nitroxide-Mediated Living Free-Radical PolymerizationsRichard P. N. Veregin, Peter G. Odell, Lora M. Michalak, and Michael K. GeorgesView Author Information Xerox Research Centre…
Organic Electronics and PhotovoltaicsAdvanced Polymer Synthesis and CharacterizationConducting polymers and applications
André Tézé、Jacqueline Canny、Lucian Gurban 等 5 位作者1996-01-01Inorganic Chemistry
The reaction of tungstate ions with the gamma-10-tungstosilicate in mixed water-ethanol (v/v) yields the corresponding isomer of the 12-tungstosilicate isolated as its tetrabutylammonium salt. It was characterized by means of (183)W NMR, infrared, Raman, and UV spectroscopies and was identified with the isomer resulti…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Reactions
Becky Gee、Hellmut Eckert1996-01-01The Journal of Physical Chemistry
The relative arrangement of sodium and lithium ions in mixed-alkali silicate glases of composition [(Li 2 O) 1- y (Na 2 O) y ] x [SiO 2 ] 1- x ( y = 0.25, 0.50, and 0.75; x = 0.40 and 0.50) is studied by 23 Na−{ 7 Li} spin echo double-resonance (SEDOR) NMR spectroscopy, supplemented by additional 23 Na−{ 6 Li} experim…
Material Dynamics and PropertiesGlass properties and applicationsAdvanced Condensed Matter Physics
Ekaterina A. Ponomarenko、A. J. Waddon、Kirill N. Bakeev 等 5 位作者1996-01-01Macromolecules
Solid-state properties of the stoichiometric complexes formed by sodium poly(α, l -glutamate) and oppositely charged low molecular weight surfactants (alkyltrimethylammonium bromides) were examined by circular dichroism, infrared, and X-ray diffraction techniques. The polypeptide chains in the complexes were shown to…
Molecular Sensors and Ion DetectionChemical Synthesis and AnalysisSupramolecular Self-Assembly in Materials
Antonino Gulino、Stephen C. Parker、F.H. Jones 等 4 位作者1996-01-01Journal of the Chemical Society Faraday Transactions
Core and valence level photoemission and electron energy loss (EELs) spectra of MoO2 and WO2 have been measured. Metal–metal bonding in these distorted rutile dioxides splits the metal 4d or 5d conduction band into two components, with a significantly bigger splitting for WO2 than MoO2. The O 2p bandwidth is also foun…
Transition Metal Oxide NanomaterialsElectron and X-Ray Spectroscopy TechniquesGa2O3 and related materials
Yasuhisa Yamada、Tadahiko Yamada、S. Tasaka 等 4 位作者1996-01-01Macromolecules
The kinetics of hydrogen plasma in an afterglow region has been simulated to distinguish remote plasma treatment from conventional (direct) plasma treatment. A simulation shows the possibility that remote hydrogen plasma treatment can enhance interaction reactions with hydrogen radicals relative to those with electron…
Surface Modification and SuperhydrophobicityDiamond and Carbon-based Materials ResearchPlasma Diagnostics and Applications
Thomas Beissel、Frank Birkelbach、Eckhard Bill 等 10 位作者1996-01-01Journal of the American Chemical Society
A series of homo- and heterotrinuclear complexes containing three face-sharing octahedra has been synthesized by using the pendent arm macrocyclic ligands 1,4,7-tris(3,5-dimethyl-2-hydroxybenzyl)-1,4,7-triazacyclononane, L 0 H 3, and 1,4,7-tris(4- tert -butyl-2-mercaptobenzyl)-1,4,7-triazacyclononane, LH 3: [{L 0 Ni I…
Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesLanthanide and Transition Metal Complexes
James G. Goll、Kevin T. Moore、Abhik Ghosh 等 4 位作者1996-01-01Journal of the American Chemical Society
The synthesis, optical spectroscopy, photophysical properties, electrochemistry, and X-ray photoelectron spectroscopy of a series of [5,10,15,20-tetrakis(perfluoroalkyl)porphinato]zinc(II) complexes and their free base analogs are reported. The title compounds were prepared by a condensation methodology that utilizes…
Porphyrin and Phthalocyanine ChemistryPhotodynamic Therapy Research StudiesPorphyrin Metabolism and Disorders
Ki‐Jeong Moon、Shim Hong-Ku、Kwang-Sup Lee 等 5 位作者1996-01-01Macromolecules
A new polyurethane structure with a hemicyanine dye attached to the polymer side chain was synthesized by the step growth polymerization in a reaction between ( E )- N -butyl-4-[2-[4-[bis(2-hydroxyethyl)amino]phenyl]ethenyl]pyridinium tetraphenylborate and 2,4-toluene diisocyanate. The molecular weight of the final pr…
Nonlinear Optical Materials ResearchNonlinear Optical Materials StudiesBioactive Compounds and Antitumor Agents
Yiping Zhang、Charles J. O’Connor、Abraham Clearfield 等 4 位作者1996-01-01Chemistry of Materials
Hydrothermal treatment of V2O5 with H2NCH2CH2CH2NH2 in H2O yields (H3N(CH2)3NH3)[V4O10], a layered mixed-valence vanadium oxide with protonated diaminopropane dications in the interlamellar space. The oxide layers are constructed from V5+O4 tetrahedra and pairs of edge-sharing V4+O5 square pyramids. This compound exhi…
Mesoporous Materials and CatalysisTransition Metal Oxide NanomaterialsPolyoxometalates: Synthesis and Applications
Gilberto Maia、Roberto M. Torresi、Edson A. Ticianelli 等 4 位作者1996-01-01The Journal of Physical Chemistry
Electrochemical quartz crystal microbalance (EQCM) data combined with cyclic voltammetry were used to study the ionic exchange process in polypyrrole films prepared in sulfuric acid solution. A quantitative analysis of the results indicates a doping degree of 33% after polymerization and a high polymerization efficien…
Gas Sensing Nanomaterials and SensorsConducting polymers and applicationsAnalytical Chemistry and Sensors
David M. Rothwarf、Harold A. Scheraga1996-01-01Biochemistry
The folding kinetics have been determined for hen egg white lysozyme and two mutants in which Trp-62 and Trp-108 have been individually replaced by tyrosine (Tyr-62-lysozyme and Tyr-108-lysozyme, respectively). An earlier study of wild-type lysozyme [Denton, M. E., Rothwarf, D. M., & Scheraga, H. A. (1994) Biochemistr…
Protein Structure and DynamicsProteins in Food SystemsEnzyme Structure and Function
Jon R. Schoonover、Geoffrey F. Strouse、R. Brian Dyer 等 6 位作者1996-01-01Inorganic Chemistry
Time-resolved infrared difference spectra have been acquired for a series of Re(I) complexes by step-scan Fourier transform infrared spectroscopy, the first application of the step-scan technique to transient inorganic photochemistry. Shifts in ν(CO) following laser flash excitation at 354.7 nm in CH3CN at room temper…
Metal complexes synthesis and propertiesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms
P. Bornhauser、Gion Calzaferri1996-01-01The Journal of Physical Chemistry
The ring-opening vibrations of the spherosilasesquioxanes of the general formula (HSiO 3/2 ) 2 n, n = 2, 3, 4, etc., are normal modes in which all Si−O stretching and/or O−Si−O bending displacements of the considered ring are in phase. We have investigated the vibrational structure of the experimentally well-known H 8…
Advanced ceramic materials synthesisSilicone and Siloxane ChemistryChemical Synthesis and Characterization
Eric M. Furst、Edward S. Pagac、Robert D. Tilton1996-01-01Industrial & Engineering Chemistry Research
Coadsorption of polymers and surfactants is a poorly understood process that occurs in a variety of complex fluid applications. In single-component solutions, the cationic polyelectrolyte polylysine and the cationic surfactant cetyltrimethylammonium bromide (CTAB) both adsorb to negatively charged silica surfaces. Her…
Surfactants and Colloidal SystemsPolymer Surface Interaction StudiesElectrostatics and Colloid Interactions
Jacques Bonvoisin、Jean‐Pierre Launay、Mark Van der Auweraer 等 4 位作者1996-01-01The Journal of Physical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionOrganic Mixed-Valence Systems: Intervalence Transition in Partly Oxidized Aromatic Polyamines. Electrochemical and Optical StudiesJacques Bonvoisin, Jean-Pierre Launay, Mark Van der Auweraer, and Frans Carl De SchryverCite this: J. Phys. Chem. 1996, 100, 45, 18006Pub…
Conducting polymers and applicationsElectrochemical Analysis and ApplicationsAnalytical Chemistry and Sensors
Vinay Gupta、Nicholas L. Abbott1996-01-01Langmuir
This paper demonstrates that self-assembled monolayers (SAMs) formed by chemisorption of alkanethiols on the surface of obliquely deposited, 10 nm-thick, films of gold are useful in studies of the anchoring of liquid crystals (LCs) on surfaces. Self-assembled monolayers supported on obliquely deposited gold permit uni…
Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsMolecular Junctions and Nanostructures