Derek H. R. Barton、Bin Hu、Dennis K. Taylor 等 4 位作者1996-01-01Journal of the Chemical Society Perkin Transactions 2
Gif chemistry permits the selective functionalization of saturated hydrocarbons under very mild conditions. The formation of alkyl chlorides is shown to derive from an FeII–FeIV manifold and is distinct from the usual ketonization process (Gif chemistry) produced by an FeIII–FeV manifold. The importance of certain car…
Metal complexes synthesis and propertiesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
Przemyslaw Maslak、Anu Chopra、Christopher R. Moylan 等 7 位作者1996-01-01Journal of the American Chemical Society
A new type of intramolecular charge-transfer dye has been prepared. The LUMO of the acceptor part (1,3-indandione) in these compounds is spiroconjugated with the HOMO of the donor part (aromatic diamine or amino thiol). The interaction between the donor and acceptor is controlled by the energy and symmetry of the fron…
Nonlinear Optical Materials ResearchPhotochemistry and Electron Transfer StudiesPhotochromic and Fluorescence Chemistry
Ieuan H. Jenkins、Ulrike Salzner、Peter G. Pickup1996-01-01Chemistry of Materials
A series of three-ring heteroaromatic compounds consisting of a pyridine central ring and thiophene, selenophene, or N -methylpyrrole outer rings, and their polymers have been investigated. Differences in redox potentials and electronic absorbance spectra of the three-ring monomers have been interpreted with the aid o…
Molecular Junctions and NanostructuresElectrochemical Analysis and ApplicationsOrganic and Molecular Conductors Research
Donal F. O’Shea、Mark A. Miller、Hiroko Matsueda 等 4 位作者1996-01-01Inorganic Chemistry
A simple method has been developed for metalation of porphyrinic compounds under homogeneous conditions at room temperature using a stable ethereal solution of MgI(2) and N,N-diisopropylethylamine. A previously developed heterogeneous procedure employs a mixture of a magnesium halide and a nonnucleophilic amine in a n…
Porphyrin and Phthalocyanine ChemistryNeonatal Health and BiochemistryPorphyrin Metabolism and Disorders
Peter R. Wills、Michael P. Jacobsen、Donald J. Winzor1996-01-01Biopolymers
An improved procedure is described for the characterization of solute self-association by sedimentation equilibrium. Whereas previous statistical-mechanical approaches to allowance for the effects of thermodynamic nonideality have entailed tedious iteration because of their specification of activity coefficients in te…
Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesThermodynamic properties of mixtures
Enzo Alessio、Michela Macchi、S.L. Heath 等 4 位作者1996-01-01Chemical Communications
The Zn derivative of a new stable open-box shaped pentamer of vertically linked porphyrins, formed quantitatively by treatment of tetrapyridylporphyrin with [Ru(TPP)CO], adds S-bonded RuII–Me2SO complexes which can enter the box to form adducts containing the rare bridging Me2SO.
Molecular Sensors and Ion DetectionSupramolecular Chemistry and ComplexesPorphyrin and Phthalocyanine Chemistry
E.K. Hlil、R. Baudoing-Savois、B. Moraweck 等 4 位作者1996-01-01The Journal of Physical Chemistry
Changes in the electronic structure of platinum−3d transition single-crystal alloys (Pt 1 - x M x with M = Fe, Co, and Ni) are studied as a function of composition, order and nature of the 3d metal. These changes are detected by using synchrotron radiation to analyze the absorption edges. Both the Pt L II and L III ed…
X-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy TechniquesAdvanced Materials Characterization Techniques
Arezki Boudif、Michel Momenteau1996-01-01Journal of the Chemical Society Perkin Transactions 1
A new methodology based on the ‘3 + 1’ acid-catalytic condensation of tripyrranes and pyrrole-2,5-dicarbaldehyde has been used, for the first time, for the synthesis of two types of porphyrins: vic-dipropionic ester porphyrins 30 and 31 including an analogue of the corallistin-A and vic-diacrylic ester porphyrins 32 a…
Supramolecular Chemistry and ComplexesPorphyrin and Phthalocyanine ChemistryLanthanide and Transition Metal Complexes
Juin‐Yih Lai、Y.Y. Lin、Y.L. Denq 等 5 位作者1996-01-01Journal of Adhesion Science and Technology
Silicone rubber films were surface-modified with O2, Ar, or NH3 plasma in either a bell-jar-type or a tubular-type reactor to investigate the effect of the plasma treatment conditions on the hydrophilicity, peel strength, and chemical composition of the film surface. ESCA spectra of the modified films were used to cal…
Surface Modification and SuperhydrophobicityAdvanced Sensor and Energy Harvesting MaterialsPolymer Nanocomposite Synthesis and Irradiation
Rabin Bissessur、Joy Heising、Wakgari Hirpo 等 4 位作者1996-01-01Chemistry of Materials
A new family of materials based on layered transition metal dichalcogenides of the type [M‘xQyLz]n[MoS2] (Q = S, Se, Te) was prepared as a first step toward pillared layered sulfides. The new intercalated phases form from the addition of Co6Q8(PR3)6 solutions to exfoliated suspensions MoS2.
Polyoxometalates: Synthesis and ApplicationsNanocluster Synthesis and ApplicationsInorganic Chemistry and Materials
F. Garzarolli、H. Stehle、E Steinberg1996-01-01OpenAlex
Zircaloy-2 and -4, developed mainly in the United States, have been used in Germany for fuel rod claddings and in-core structural components from the beginning of reactor technology. Extensive studies of the material properties of the Zircaloys have been performed in Siemens laboratories since 1957. Irradiation testin…
Nuclear reactor physics and engineeringRadioactive element chemistry and processingNuclear Materials and Properties
Alfons Mersmann1996-01-01Process Safety and Environmental Protection
The main object of an industrial crystallization process is to produce crystals with desired properties such as crystal size distribution (CSD), shape and purity. The CSD is determined by the rates of nucleation, attrition and breakage, agglomeration, and growth. The intention of this paper is to focus on nucleation,…
Crystallization and Solubility StudiesFreezing and Crystallization Processes
Martijn M. Wienk、René A. J. Janssen1996-01-01Journal of the American Chemical Society
We describe the formation of a stable triplet-state oligoaniline di(cation radical) via a proton-triggered redox reaction between N,N ‘-bis[4-(phenylamino)phenyl]-1,3-benzenediamine ( 1 ) and N,N ‘-bis[4-(phenylimino)-cyclohexa-2,5-dienylidene]-1,3-benzenediamine ( 2 ). In this reaction 1 is oxidized, while protonated…
Organic Electronics and PhotovoltaicsPerovskite Materials and ApplicationsConducting polymers and applications
Y. Le Fur、M. Bagieu‐Beucher、R. Masse 等 5 位作者1996-01-01Chemistry of Materials
New noncentrosymmetric crystals including the 2-amino-5-nitropyridinium and 2-amino-5-nitropyridine chromophores have been designed following a strategy first applied to the 2-amino-5-nitropyridinium dihydrogen phosphate. If a counteranion able to self-aggregate in chains or layers as (H 2 PO 4 - ) n is associated to…
Crystal structures of chemical compoundsCrystallography and molecular interactionsNonlinear Optical Materials Research
Francesco Neve、Mauro Ghedini、Alessandra Crispini1996-01-01Chemical Communications
Cyclopalladation of 4′-functionalized 6′-phenyl-2,2′-bipyridine ligands (HLn, n= 1–3) leads to [PdLnCl] species as demonstrated by the crystal structure of [PdL1Cl]; thermotropic nematic mesomorphism is observed for HL3 and [PdL3Cl]; the latter is also photoluminescent at 77 K.
Organometallic Complex Synthesis and CatalysisMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Anders Södergård、Jan H. Näsman1996-01-01Industrial & Engineering Chemistry Research
Poly( l -lactide) (PLLA) prepared by ring-opening melt polymerization using tin−octoate as catalyst undergoes a rapid melt degradation. The melt stability of PLLA was evaluated by using a Haake melt rheometer at various temperatures. The degradation rate constants were calculated from the changes in the melt viscosity…
biodegradable polymer synthesis and propertiesMicroplastics and Plastic Pollution
Florian Johannes Schattenmann、Richard R. Schrock1996-01-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTSoluble, Highly Conjugated Polyenes via the Molybdenum-Catalyzed Copolymerization of Acetylene and Diethyl DipropargylmalonateFlorian J. Schattenmann and Richard R. SchrockView Author Information Department of Chemistry, 6-331, Mass…
Conducting polymers and applicationsSynthesis and Properties of Aromatic CompoundsOrganoboron and organosilicon chemistry
Lisaleigh Kane、Michael M. Satkowski、Steven D. Smith 等 4 位作者1996-01-01Macromolecules
Recent experimental and theoretical efforts suggest that ordered diblock copolymer blends can be approximated as single-component systems of average composition or molecular weight (or both) if the constituent copolymers are closely matched with respect to composition and molecular weight. In this work, we explore the…
Advanced Polymer Synthesis and CharacterizationBlock Copolymer Self-AssemblyMachine Learning in Materials Science
Suming Li、Michel Vert1996-01-01Journal of Biomaterials Science Polymer Edition
A bioresorbable composite material composed of a high molecular weight poly(DL-lactic acid) and granules of natural coral (40/60 w/w) was made by blending in acetone with further evaporation of the solvent. The blend and the unfilled polymer matrix were compression moulded and machined to yield 12 x 12 mm plates of di…
biodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical ApplicationsMicroplastics and Plastic Pollution
Adrian H. Kopf、J. Baschnagel、J. P. Wittmer 等 4 位作者1996-01-01Macromolecules
The adsorption process of the single polymer chain in a polymer brush of varying surface coverages is studied by means of Monte Carlo simulations of the bond-fluctuation lattice model. Only the end monomers can adsorb at the grafting surface, whereas inner monomers interact repulsively with it. The brush builds up a s…
Polymer Surface Interaction StudiesForce Microscopy Techniques and ApplicationsAdhesion, Friction, and Surface Interactions