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45.520 Aktuelle Fachpublikationen zum Thema temperature

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1D Iron(II) Spin Crossover Coordination Polymers with 3,3[prime or minute]-Azopyridine - kinetic trapping effects and spin transition above room temperature

26.05.2015 | Sophie Schönfeld; Charles Lochenie; Peter Thoma; Birgit Weber, CrystEngComm, 2015

Two new iron(II) 1D coordination polymers with spin crossover behaviour were synthesised using 3,3’-azopyridine as bridging axial ligand and N2O2 coordinating Schiff base-like equatorial ligands. The X-ray structures of both complexes were solved revealing a very different packing pattern for the ...

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Structure and morphology of nanoporous zno and dark current‐Voltage characteristics of the glass/(TCO)/zno/poly[2,7‐(9,9‐dioctylfluorene)‐alt‐(5,5'‐bithiophene)/ag structure

23.05.2015 | Lidia Ghimpu, Tamara Potlog, Ana‐Maria Resmerita, Ion Tiginyanu, Aurica Farcas, Journal of Applied Polymer Science, 2015

ABSTRACT The hybrid organic‐inorganic structure based on glass/(TCO)/nanoporous ZnO/poly[2,7‐(9,9‐dioctylfluorene)‐alt‐(5,5′‐bithiophene)]/Ag that was prepared by physical deposition has been investigated. The structure of the nanostructured ZnO obtained by magnetron sputtering was confirmed ...

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High‐Temperature Dielectric Relaxations in LiF Single Crystals

23.05.2015 | Jing Wang, Chunchang Wang, Qiuju Li, Yi Yu, Jian Zhang, Jun Zheng, Chao Cheng, Yide Li, Hong Wang, Journal of the American Ceramic Society, 2015

By means of dielectric permittivity, electric modulus and impedance, the dielectric properties of LiF single crystals were investigated in the temperature range of 30°C–800°C and frequency range of 50Hz–10MHz. Two thermally activated relaxations, R1 and R2, were observed. The relaxation R1 ...

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Preparation and characterization of a composite nanofiltration membrane from cyclen and trimesoyl chloride prepared by interfacial polymerization

22.05.2015 | Gui‐E. Chen, Yan‐Jun Liu, Zhen‐Liang Xu, Deng Hu, Hui‐Hong Huang, Li Sun, Journal of Applied Polymer Science, 2015

ABSTRACT A novel nanofiltration (NF) membrane was prepared with cyclen and trimesoyl chloride by interfacial polymerization on a poly(ether sulfone) ultrafiltration membrane with a molecular weight cutoff of 50,000 Da. The effects of the reaction time, monomer concentration, and heat‐treatment ...

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Analytical quality by design in pharmaceutical quality assurance: Development of a ce method for the analysis of zolmitriptan and its impurities

22.05.2015 | Serena Orlandini, Benedetta Pasquini, Claudia Caprini, Massimo Del Bubba, Sergio Pinzauti, Sandra Furlanetto, ELECTROPHORESIS, 2015

A fast and selective CE method for the determination of zolmitriptan (ZOL) and its five potential impurities has been developed applying the analytical Quality by Design (QbD) principles. Voltage, temperature, buffer concentration and pH were investigated as critical process parameters (CPPs) ...

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(9,10‐Dihydroxyoctadecyl)ammonium: A Structurally Unique Class of Clay Intercalable Surfactants

22.05.2015 | Luboš Jankovič, Juraj Kronek, Jana Madejová, Viktor Hronský, European Journal of Inorganic Chemistry, 2015

Abstract The structurally unique clay–intercalable (9,10‐dihydroxyoctadecyl)trimethylammonium (OH‐ODTMA) cationic surfactant was synthesized in two steps from commercially available oleylamine. Sodium montmorillonite was modified by a cation‐exchange reaction by using three different ...

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DC Conduction and Electric Modulus Formulation of Lithium‐Doped Bismuth Zinc Vanadate Semiconducting Glassy System

22.05.2015 | Sajjan Dahiya, Rajesh Punia, Anupinder Singh, Anup S. Maan, Sevi Murugavel, Journal of the American Ceramic Society, 2015

The conduction parameters related to dc conductivity and electric modulus formulation in the temperature range 313–533K for xLi2O (100−x) (50V2O5.20 Bi2O3. 30 ZnO) glass system have been studied. The temperature‐dependant dc conductivity is analyzed using the Mott's model for transition ...

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ChemInform Abstract: Silver‐Catalyzed C(sp2)—H Functionalization/C—O Cyclization Reaction at Room Temperature.

22.05.2015 | Jian‐Jun Dai, Wen‐Tao Xu, Ya‐Dong Wu, Wen‐Man Zhang, Ying Gong, Xia‐Ping He, Xin‐Qing Zhang, Hua‐Jian Xu, ChemInform, 2015

Abstract Under the optimized conditions A), a broad spectrum of 2‐aryl carboxylic acids is cyclized to benzochromenone products.

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ChemInform Abstract: A Mild and Simple One‐Pot Synthesis of 2‐Substituted Benzimidazole Derivatives Using DDQ as an Efficient Oxidant at Room Temperature.

22.05.2015 | Hossein Naeimi, Zahra Babaei, ChemInform, 2015

Abstract A wide range of the title compounds (III) (14 examples) are smoothly and efficiently synthesized by one‐pot reaction of o‐phenylenediamine (I) with various aromatic aldehydes under mild reaction conditions.

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Co‐pyrolysis characteristics of coal and sludge blends using thermogravimetric analysis

22.05.2015 | Pu Xiao, Ling Xu, Xidong Wang, Zhibin Chang, Environmental Progress, 2015

Co‐pyrolysis characteristics of low grade coal (LGC) and sludge derived fuel (SDF) as well as their blends (L/S = 85/15, 75/25, 50/50, and 25/75) were determined at nonisothermal (10, 20, and 30°C/min) conditions in nitrogen atmosphere using thermogravimetric analyzer (TGA). The results ...

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