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2.921 Aktuelle Fachpublikationen zum Thema temperature

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Polynuclear copper(II) pyrazolate complexes: temperature-dependent protonolysis reactions, crystal structures and high catalytic activity toward the condensation of nitriles with 2-aminoalcohol

18.09.2013 | Ling Wang; Bin Guo; Hong-Xi Li; Qi Li; Hai-Yan Li; Jian-Ping Lang, Dalton Transactions, 2013

Reaction of Cu(OAc)2•H2O and 1H-pyrazole-3,5-dicarboxylic acid dimethyl ester (Hdcmpz) in MeOH at room temperature afforded one tetranuclear Cu(II)/pyrazolate complex [{Cu2(μ-OAc)2}2(μ-dcmpz)2(μ-OAc)2] (1) in 89% yield. The similar reaction in refluxing MeOH produced a hexanuclear ...


Heterogeneous photochemistry of gaseous NO2 on solid Fluoranthene films: A source of gaseous nitrous acid (HONO) in the urban environment

16.09.2013 | Author(s): David Cazoir , Marcello Brigante , Rachid Ammar , Barbara D’Anna , Christian George, Journal of Photochemistry and Photobiology A: Chemistry, 2013

Publication date: Available online 10 September 2013 Source:Journal of Photochemistry and Photobiology A: Chemistry Author(s): David Cazoir , Marcello Brigante , Rachid Ammar , Barbara D’Anna , Christian George Using a coated flow tube equipped with several near-ultraviolet emitting ...


Coupling between proton binding and redox potential in electrochemically active macromolecules. The example of Polyaniline

16.09.2013 | Author(s): Waldemar A. Marmisollé , M. Inés Florit , Dionisio Posadas, Journal of Electroanalytical Chemistry, 2013

Publication date: 15 October 2013 Source:Journal of Electroanalytical Chemistry, Volume 707 Author(s): Waldemar A. Marmisollé , M. Inés Florit , Dionisio Posadas In this work it is investigated the coupling between the redox potential and the extent of proton binding in electrochemically ...


Soft-chemical synthesis, characterization and humidity sensing behavior of WO3/TiO2 nanopowders

16.09.2013 | Author(s): S.M. Zanetti , K.O. Rocha , J.A.J. Rodrigues , E. Longo, Sensors and Actuators B: Chemical, 2013

Publication date: January 2014 Source:Sensors and Actuators B: Chemical, Volume 190 Author(s): S.M. Zanetti , K.O. Rocha , J.A.J. Rodrigues , E. Longo Tungsten oxide/titania (WO3/TiO2) nanopowders were synthesized by the polymeric precursor method which varied the WO3 content between 0 ...


A Facile Route to Flowerlike Bi2S3 Constructed by Polycrystalline Nanoplates with Enhanced Electrochemical Properties

13.09.2013 | Rencheng Jin, Guihua Li, Junshen Liu, Lixia Yang, European Journal of Inorganic Chemistry, 2013

Abstract In this work, hierarchical flowerlike Bi2S3 structures constructed by polycrystalline nanoplates combined with urchinlike and wirelike Bi2S3 were synthesized by using a thioglycolic acid assisted solvothermal method. On the basis of the time‐dependent experimental results, an anion ...


Trapping of Metal Atoms on Nanoprotrusions of Carbon Nanotubes

13.09.2013 | Lidong Shao, Wei Zhang, Luise Theil Kuhn, Advanced Engineering Materials, 2013

Nanoprotrusions on CNTs are engineered using conventional lab treatments at a low temperature. The experimental set‐up of applying a mild acid treatment with sonication and base washing is based on the development of introduced defects and vacancies. Compared with previous reports realizing ...


Shape Evolution of “Multibranched” Mn–Zn Ferrite Nanostructures with High Performance: A Transformation of Nanocrystals into Nanoclusters

13.09.2013 | Jun Xie; Changzhi Yan; Yu Zhang; Ning Gu, Chemistry of Materials, 2013

Monodisperse magnetic Mn–Zn ferrite nanostructures with various morphologies have been successfully synthesized via high-temperature decomposition of metal acetylacetonate (acac) in the presence of oleic acid (OA) and oleyamine (OAm). In a classical crystal nucleation/growth process, differential ...


ChemInform Abstract: Sulfonamide Synthesis via Oxyma‐O‐sulfonates — Compatibility to Acid Sensitive Groups and Solid‐Phase Peptide Synthesis.

12.09.2013 | Nani Babu Palakurthy, Dharm Dev, Shubhasmin Rana, Krishna Chaitanya Nadimpally, Bhubaneswar Mandal, ChemInform, 2013

Abstract The method has many advantages compared to the other known methods as it proceeds at room temperature and avoids the use of strong bases.


Novel High Molecular Weight Aromatic Fluorinated Polymers from One-Pot, Metal-Free Step Polymerizations

12.09.2013 | Lilian I. Olvera; Maria T. Guzmán-Gutiérrez; Mikhail G. Zolotukhin; Sergei Fomine; Jorge Cárdenas; Fransico A. Ruiz- ..., Macromolecules, 2013

A novel series of linear, high-molecular-weight polymers and copolymers was synthesized by one-pot, metal-free superacid-catalyzed reaction of trifluoromethylalkyl (1a–1c) and trifluoromethylaryl (1d–1h) ketones with the linear, nonactivated, multiring aromatic hydrocarbons biphenyl (A), ...


Binary Diffusion Coefficients of Aqueous Straight-Chain Amino Acids at Infinitesimal Concentration and Temperatures from (298.2 to 333.2) K

10.09.2013 | Kazuko Yui; Yuichiro Noda; Motonobu Koido; Mai Irie; Izumi Watanabe; Tatsuya Umecky; Toshitaka Funazukuri, Journal of Chemical & Engineering Data, 2013

Mutual diffusion coefficients for aqueous solutions of 3-aminopropanoic acid (β-alanine), 4-aminobutanoic acid (γ-aminobutyric acid), 5-aminopentanoic acid, 6-aminohexanoic acid, and 7-aminoheptanoic acid at infinitesimal concentration were measured at atmospheric pressure and temperatures from ...


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