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5.003 Aktuelle Fachpublikationen zum Thema temperature

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Preparation and modification of polythiophene–organic montmorillonite composite

26.03.2015 | Ying Ling, Jianping Long, Chun Huang, Polymer Composites, 2015

Polythiophene‐organic montmorillonite (PTP‐OMMT) composites were prepared via Fe3+‐H2O2 catalytic oxidation system at room temperature in water (medium) within the presence of sodium dodecyl benzene sulfonate. The PTP‐OMMT composite made from 2 g/ml solution of OMMT/TP with reacting for 12 h ...

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Nitrite Dismutase Reaction Mechanism: Kinetic and Spectroscopic Investigation of the Interaction between Nitrophorin and Nitrite

24.03.2015 | Chunmao He; Barry D. Howes; Giulietta Smulevich; Sigrun Rumpel; Edward J. Reijerse; Wolfgang Lubitz; Nicholas Cox; M ..., Journal of the American Chemical Society, 2015

Nitrite is an important metabolite in the physiological pathways of NO and other nitrogen oxides in both enzymatic and nonenzymatic reactions. The ferric heme b protein nitrophorin 4 (NP4) is capable of catalyzing nitrite disproportionation at neutral pH, producing NO. Here we attempt to resolve ...

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Synthesis of 4‐silaspiro[3.4]octa‐1,5‐diene derivatives: hybrid spiro compounds

23.03.2015 | Ezzat Khan, Bernd Wrackmeyer, Rhett Kempe, Germund Glatz, Applied Organometallic Chemistry, 2015

Trialkynyl(vinyl)silanes CH2CHSi(CCR)3 (R = Bu, Ph, p‐tolyl) were prepared and treated with 9‐borabicyclo[3.3.1]nonane (9‐BBN). Consecutive 1,2‐hydroboration and intramolecular 1,1‐carboboration reactions (each requires different reaction conditions) were studied. 1,2‐Hydroboration of the ...

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Direct Detection of a Triplet Vinylnitrene, 1,4-Naphthoquinone-2-ylnitrene, in Solution and Cryogenic Matrices

23.03.2015 | Sujan K. Sarkar; Asako Sawai; Kousei Kanahara; Curt Wentrup; Manabu Abe; Anna D. Gudmundsdottir, Journal of the American Chemical Society, 2015

The photolysis of 2-azido-1,4-naphthoquinone (1) in argon matrices at 8 K results in the corresponding triplet vinylnitrene 32, which was detected directly by IR spectroscopy. Vinylnitrene 32 is stable in argon matrices but forms 2-cyanoindane-1,3-dione (3) upon further irradiation. Similarly, ...

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Stabilization of a Bimolecular Triplex by 3′‐S‐Phosphorothiolate Modifications: An NMR and UV Thermal Melting Investigation

20.03.2015 | Kathryn Evans, Inder Bhamra, Richard T. Wheelhouse, John R. P. Arnold, Richard Cosstick, Julie Fisher, Chemistry - A European Journal, 2015

Abstract Triplexes formed from oligonucleic acids are key to a number of biological processes. They have attracted attention as molecular biology tools and as a result of their relevance in novel therapeutic strategies. The recognition properties of single‐stranded nucleic acids are also ...

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Frequency and Temperature Dependence of Dielectric Behaviors for Conductive Acrylic Composites

20.03.2015 | SUAT CETINER, SEYMA SIRIN, MARIUS OLARIU, A. SEZAI SARAC, Advances in Polymer Technology, 2015

ABSTRACT In this study, acrylic‐based conductive polymeric composite thin films were prepared by in situ chemical polymerization of pyrrole (Py) in the case of ammonium persulfate (APS) and iron(III) chloride (FeCl3). Composite thin films were produced by the solution casting method. The ...

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Effect of TiO2 Doping on the Structure and Microwave Dielectric Properties of Cordierite Ceramics

20.03.2015 | Song Wu, Kaixin Song, Peng Liu, Huixing Lin, Fangfang Zhang, Peng Zheng, Huibin Qin, Journal of the American Ceramic Society, 2015

The (1−x)Mg2Al4Si5O18–xTiO2 |(1−x)MAS‐xT| (0≤x≤ 0.35) cordierite ceramics are fabricated by solid‐state reaction method for obtaining near‐zero temperature coefficient of resonant frequency (τf). The XRD and SEM results show that (1−x)MAS‐xT (0≤x≤0.10) ceramics exhibit single cordierite ...

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Clay induced thermoplastic crystals in thermoset matrix: Thermal, Dynamic mechanical, and morphological analysis of clay/nylon‐6‐epoxy nanocomposites

20.03.2015 | Aniket Vyas, Jude O. Iroh, Polymer Composites, 2015

A novel procedure to synthesize in‐situ clay/nylon‐6 composite suspension was explored via anionic solution polymerization. The suspension was efficiently blended with water‐based epoxy resin using mechanical stirrer at room temperature. Hence, a 3‐component coating system was obtained ...

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Low‐Temperature, Nontoxic Water‐Induced Metal‐Oxide Thin Films and Their Application in Thin‐Film Transistors

19.03.2015 | Guoxia Liu, Ao Liu, Huihui Zhu, Byoungchul Shin, Elvira Fortunato, Rodrigo Martins, Yiqian Wang, Fukai Shan, Advanced Functional Materials, 2015

Here, a simple, nontoxic, and inexpensive “water‐inducement” technique for the fabrication of oxide thin films at low annealing temperatures is reported. For water‐induced (WI) precursor solution, the solvent is composed of water without additional organic additives and catalysts. The ...

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2D and 3D Hybrid Systems for Enhancement of Chondrogenic Differentiation of Tonsil‐Derived Mesenchymal Stem Cells

19.03.2015 | Jinhye Park, In Young Kim, Madhumita Patel, Hyo Jung Moon, Seong‐Ju Hwang, Byeongmoon Jeong, Advanced Functional Materials, 2015

2D/3D hybrid cell culture systems are constructed by increasing the temperature of the thermogelling poly(ethylene glycol)‐poly(l‐alanine) diblock copolymer (PEG‐l‐PA) aqueous solution in which tonsil tissue‐derived mesenchymal stem cells and graphene oxide (GO) or reduced graphene oxide (rGO) ...

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