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44.079 Aktuelle Fachpublikationen zum Thema temperaturerss
26.11.2014 | Wei Liu; Xiao-ming Zhao; Hong-bo Zhang; Liang Zhang, Chemical Communication, 2014
Pd-catalyzed asymmetric allylic sulfonation of di-aryl-substituted allylic acetates with sodium sulfite (Na2SO3) in THF–H2O at room temperature was described. This method directly provided allylic sulfonic acids in up to excellent yield and enantioselectivity.
25.11.2014 | T Pal; Mukul Pradhan; Anindita Roy; Arun Kumar Sinha; Ramkrishna Sahoo; Dibakar Deb, Dalton Transactions, 2014
A vanadium complex, [(C5H5N)2V2O3.H2O] of different morphologies have been obtained via a modified hydrothermal procedure by using pyridine and VOSO4 salt as the starting material. The evolved [(C5H5N)2V2O3.H2O] nanobelts are of 50-200 nm in width and length up to several millimeters. At higher ...
25.11.2014 | Matías E. Aguirre; Gonzalo Perelstein; Armin Feldhoff; Adriana Condó; Alfredo J. Tolley; María A. Grela, New Journal of Chemistry, 2014
The room temperature spontaneous reduction of HAuCl4 in ethylene glycol in the presence of pre-formed ZnO nanoparticles is investigated by UV-vis spectroscopy. Analysis by HRTEM demonstrated that the synthesized nanostructures consist of small ZnO nanoparticles (5.0 nm) in contact with bigger (15 ...
25.11.2014 | Raffaele Pastore; Massimo Pica Ciamarra; Giuseppe Pesce; Antonio Sasso, Soft Matter, 2014
Glass–forming materials are characterized by an intermittent motion at the microscopic scale. Particles spend most of their time rattling within the cages formed by their neighbors, and seldom jump to a different cage. In molecular glass formers the temperature dependence of jump features, such ...
25.11.2014 | I Popov; Alexander Puzenko; Airat Khamzin; Yuri Feldman, Physical Chemistry Chemical Physics, 2014
The main mechanism of the dielectric relaxation process of ordinary hexagonal ice (Ice Ih) and its temperature dependence remains unclear. The most interesting and as yet unexplained feature of ice is the presence of the dynamical crossover in relaxation time behavior around Tc=230±3K.Since there ...
25.11.2014 | weibin liang; Ravichandar Babarao; Michael J Murphy; Deanna Michelle D'Alessandro, Dalton Transactions, 2014
This work reports the first example of a Zr-based MOF which is exclusively constructed from the monocarboxylate ligand formate. Despite the low surface area, the new material exhibits an unexpectedly favourable affinity for carbon dioxide over nitrogen at room temperature.
25.11.2014 | Ajai kumar Singh; Om Prakash; Hemant Joshi; Umesh Kumar; Alpesh Kumar Sharma, Dalton Transactions, 2014
The complexes [AgL(NO3)CH3CN](1) and [AgLNO3] (2) are formed on reacting AgNO3 with L in acetonitrile for 12 (at room temperature) and 24 h (at 90 ºC) respectively, where L is a (S,N,S) pincer ligand, 4,5-bis(phenylthiomethyl)acridine, synthesized by the reaction of in situ generated PhS¯ with 4, ...
25.11.2014 | Xi He; Huaming Yang, Dalton Transactions, 2014
The fluorescence and room temperature activity of palygorskite supported Y2O3:(Eu3+,Au3+) nanocomposite were investigated to design a fluorescence indicated catalyst. The effects of Au3+ doping on the structure and surface properties of host material were systematically characterized. The ...
25.11.2014 | Nasir Baig; Buchi Reddy Vaddula; Mallikarjuna N Nadagouda; Rajender S Varma, Green Chemistry, 2014
Crystalline copper (II)-nicotinamide complex, synthesized via simple mixing of copper chloride and nicotinamide solution at room temperature, catalyzes the C-S, C-N bond forming and cycloaddition reactions under a variety of sustainable reaction conditions.
25.11.2014 | Rodrigo Segura; Massimiliano Rossi; Christian Cierpka; Christian Kaehler, Lab on a Chip, 2014
A combination of cutting edge developments is presented to characterize three-dimensional (3D) temperature and velocity fields in microscopic flows. An emulsion of non-encapsulated thermo-liquid crystal (TLC) micro spheres, with a narrow size distribution is used to track the flow's motion and ...