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41.284 Aktuelle Fachpublikationen zum Thema temperature

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Custom designed nanocrystalline Li2MSiO4/reduced graphene oxide (M=Fe, Mn) formulations as high capacity cathodes for rechargeable lithium batteries

29.10.2014 | D Bhuvaneswari; Kalaiselvi Nallathamby, Dalton Transactions, 2014

Abstract: Nanocrystalline Li2MSiO4 (M=Fe, Mn) particles embedded between in-situ formed rGO sheets are obtained by adopting customised solvothermal synthesis. An appreciable room temperature specific capacity of 149 mAh g-1 with 89% capacity retention and 210 mAh g-1 with 87% retention have been ...


Room temperature electrochemical synthesis of N-doped Graphene and its electrocatalytic activity for oxygen reduction

29.10.2014 | Feng-Xiang Ma; Jiong Wang; Feng-bin Wang; Xinghua Xia, Chemical Communication, 2014

We report a facile and green electrochemical method using graphene oxide as precursor to synthesize nitrogen doped graphene at room temperature in ammonia containing aqueous solution. The nitrogen doping content reaches of 3.3 at%, and the resultant NG shows excellent activity toward oxygen ...


Cu/ZnO Nanocatalysts in Response to Environmental Conditions: Surface Morphology, Electronic Structure, Redox State and CO2 Activation

29.10.2014 | Luis Martínez-Suárez; Johannes Frenzel; Dominik Marx, Physical Chemistry Chemical Physics, 2014

Methanol synthesis is one of the landmarks of heterogeneous catalysis due to the great industrial significance of methanol as a clean liquid fuel and as a raw material for industry. Understanding in atomistic detail the properties of the underlying metal/oxide catalyst materials as a function of ...


Effects of Thermal Disorder on Electronic Properties of Ordered Polymers

28.10.2014 | Marko Mladenovic; Nenad Vukmirovic, Physical Chemistry Chemical Physics, 2014

The effects of thermal disorder on electronic properties of crystalline polymers were investigated. Atomic configurations of the material were obtained using classical Monte Carlo simulations at room temperature, while electronic structure calculations were performed using density functional ...


Manipulating and quantifying temperature-triggered coalescence with microcentrifugation

28.10.2014 | Huanhuan Feng; Dmitry Ershov; Thomas Krebs; Karin Schroen; Martien A. Cohen Stuart; Jasper van der Gucht; Joris Sprakel, Lab on a Chip, 2014

In this paper we describe a new approach to quantify the stability and coalescence kinetics of thermally switchable emulsions using an imaging-based microcentrifugation method. We first show that combining synchronized high-speed imaging with microfluidic centrifugation allows the direct ...


Rational design of a room temperature molecular spin switch. The light-driven coordination induced spin state switch (LD-CISSS) approach

28.10.2014 | M. Dommaschk; C. Schütt; S. Venkataramani; U. Jana; C. Näther; F. D. Sönnichsen; R. Herges, Dalton Transactions, 2014

Extensive use of quantum chemical calculations has been made to rationally design a molecule whose spin state can be switched reversibly using light of two different wavelengths at room temperature in solution. Spin change is induced by changing the coordination number of a nickel complex. The ...


Fluorescent Polymers from Non-Fluorescent Photoreactive Monomers

28.10.2014 | Jan Mueller; Dominik Voll; Friedrich Schmidt; Guillaume Delaittre; Christopher Barner-Kowollik, Chemical Communication, 2014

A facile, fast and ambient-temperature avenue towards highly fluorescent polymers is introduced via polymerizing non-fluorescent photoreactive monomers based on light-induced NITEC chemistry, providing a platform technology for fluorescent polymers. The resulting polypyrazolines were analyzed in ...


Achieving high-quality In0.3Ga0.7As films on GaAs substrates by low-temperature molecular beam epitaxy

28.10.2014 | Fangliang Gao; Lei Wen; Jingling Li; Yunfang Guan; Shuguang Zhang; Guoqiang Li, CrystEngComm, 2014

The effects of the thickness of the large-mismatched amorphous In0.6Ga0.4As buffer layer on In0.3Ga0.7As epi-films grown on a GaAs substrate have been systematically investigated. The In0.3Ga0.7As films with the In0.6Ga0.4As buffer layer of 0, 1, 2, and 4 nm thickness are grown by low-temperature ...


An adaptable stage perfusion incubator for the controlled cultivation of C2C12 myoblast cells

28.10.2014 | Felix Kurth; Alfredo Franco-Obregon; Christoph A Bärtschi; Petra S Dittrich, Analyst, 2014

Here we present a stage perfusion incubation system that allows for the cultivation of mammalian cells within PDMS microfluidic devices for long-term microscopic examination and analysis. The custom-built stage perfusion incubator is adaptable to any x-y microscope stage and is enabled for ...


Zinc Chloride Catalyzed Collective Synthesis of Arylmethylene Bis(3- hydroxy-2-cyclohexene-1-ones) and 1,8-Dioxo-octahydroxanthene/acridine Derivatives

28.10.2014 | Selva Ganesan, Subramaniapillai; Kothandapani, Jagatheeswaran; Ganesan, Asaithampi, Letters in Organic Chemistry, 2014

Abstract: Catalytic amount of ZnCl2 efficiently promoted rapid synthesis of arylmethylene bis(3-hydroxy-2-cyclohexene- 1-one) in water at room temperature in excellent yield. At elevated temperature, ZnCl2 also catalyzed one-pot synthesis of 1,8-dioxo-octahydroxanthene and ...


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