Now showing items 41-50 of 426
Cyclic siloxanes and silsesquioxanes as cores and frameworks for the construction of ferrocenyl dendrimers and polymers
(John Wiley & Sons, Ltd., 1999-04)
Starting from 1,3,5,7-tetramethylcyclotetrasiloxane as core, novel ferrocenyl silicon-containing dendrimers have been constructed up to the third generation, which contains 16 peripheral ferrocene moieties. As precursors ...
Thermodynamics of alkali alkanoates VII. Heat capacity and thermodynamic functions of potassium acetate from 4 to 585 K
(Elsevier, 1990-01)
The heat capacity of potassium acetate was measured by equilibrium adiabatic calorimetry from near 4 K up to 350 K and by d.s.c. from 325 K through melting (solid to isotropic liquid) to 585 K. No transition or anomaly was ...
A formal and enantioselective synthesis of (-)-serricornin, the sex pheromone of the cigarette beetle (lasioderma serricorne F.)
(Elsevier, 1994-04)
A synthesis of (-)-Serricornin is described. The (4S,5S)-4-methyl-5-ethyl [delta]-valerolactone 8 has been synthesized with a high degree of enantioselectivity starting from (R)-(+)-(E)-1-propenyl p-tolylsulfoxide 2, having ...
MOCVD of rhodium, palladium and platinum complexes on fluidized divided substrates: Novel process for one-step preparation of noble-metal catalysts
(John Wiley & Sons, Ltd., 1998-03)
A new one-step method, entitled fluidized-bed metal-organic chemical vapor deposition (FBMOCVD) of preparing highly dispersed metal-supported catalysts is reported. The following complexes were studied and used as CVD ...
Effects of cholate on Photosystem II: Selective extraction of a 22 kDa polypeptide and modification of QB-site activity
(Elsevier, 1993-10-04)
A quinone-mediated two-electron gate is shared by Photosystem II (PS II) and the photosystem of purple bacteria. In the bacterial reaction center, electron transfer from the reduced primary quinone acceptor, Q-A, to the ...
Iodine-promoted decomposition of 1-aryl-3,3-dialkyltriazenes: A mild method for the synthesis of aryl iodides
(Elsevier, 1994-08-01)
Iodine promoted decomposition of 1-aryl-3,3-dialkyltriazenes in organic solvents is shown to give high yields of the corresponding aryl iodides under extremely mild conditions. The presence of iodine greatly accelerates ...
Rascher Aufbau großer Phenylacetylen-Dendrimere mit MolekÜldurchmessern bis zu 12.5 Nanometern Stiff Dendritic Macromolecules, 3. Mitteilung. Diese Arbeit wurde von der National Science Foundation (Grant DMR-9212054), dem NSF Young Investigator Program und der 3M Company (Awards Program for Untenured Faculty) gefÖrdert. −2, Mitteilung: [6].
(WILEY-VCH Verlag GmbH, 1993-09)
No Abstract.
Design of molecular architectures for polymeric mesophase formation
(Wiley Periodicals, Inc.Hüthig & Wepf Verlag, 1995-07)
Based on the tendency of low molar mass liquid crystals composed of extended mesogens symmetrically disubstituted with long n ‐alkoxy substituents to exhibit smectic C mesophases, we have proposed that SCLCPs with laterally ...
Comparison of rigid and flexible simple point charge water models at supercritical conditions
(John Wiley & Sons, Inc., 1996-11-30)
This study investigates the differences between the predictions of various properties of rigid and flexible simple point charge water models at supercritical conditions. Molecular dynamics simulations were conducted for ...
Effiziente Synthese makrocyclischer Kohlenwasserstoffe mit Durchmessern im Nanometerbereich
(WILEY‐VCH Verlag GmbH, 1992-07)