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79 Aktuelle Fachpublikationen zum Thema Physikalische Chemie

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An Aluminum–Sulfur Battery with a Fast Kinetic Response

16.01.2018 | Huicong Yang, Lichang Yin, Ji Liang, Zhenhua Sun, Yuzuo Wang, Hucheng Li, Kuang He, Lipo Ma, Zhangquan Peng, Siyao Q ..., Angewandte Chemie, 2018

Abstract The electrochemical performance of the aluminum‐sulfur (Al‐S) battery has very poor reversibility and a low charge/discharge current density owing to slow kinetic processes determined by an inevitable dissociation reaction from Al2Cl7− to free Al3+. Al2Cl6Br− was used instead of ...

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Innentitelbild: Unleashing the Potential of 17O NMR Spectroscopy Using Mechanochemistry (Angew. Chem. 24/2017)

15.05.2017 | Thomas‐Xavier Métro, Christel Gervais, Anthony Martinez, Christian Bonhomme, Danielle Laurencin, Angewandte Chemie, 2017

Sauerstoff‐17‐NMR‐Spektroskopie ist eine leistungsstarke Methode zur Untersuchung der Struktur und Reaktivität molekularer Systeme, weist aber leider nur eine sehr geringe Empfindlichkeit auf. D. Laurencin, T.‐X. Métro et al. zeigen in ihrer Zuschrift auf S. 6907 ff., dass Mechanochemie zur ...

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High‐Molecular‐Weight Polynucleotides by Transferase‐Catalyzed Living Chain‐Growth Polycondensation

15.05.2017 | Lei Tang, Luis A. Navarro, Ashutosh Chilkoti, Stefan Zauscher, Angewandte Chemie, 2017

Abstract We present terminal deoxynucleotidyl transferase‐catalyzed enzymatic polymerization (TcEP) for the template‐free synthesis of high‐molecular‐weight, single‐stranded DNA (ssDNA) and demonstrate that it proceeds by a living chain‐growth polycondensation mechanism. We show that the ...

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Mechanochemical Friedel–Crafts Alkylation—A Sustainable Pathway Towards Porous Organic Polymers

12.05.2017 | Erik Troschke, Sven Grätz, Tilo Lübken, Lars Borchardt, Angewandte Chemie, 2017

Abstract This study elucidates an innovative mechanochemical approach applying Friedel–Crafts alkylation to synthesize porous covalent triazine frameworks (CTFs). Herein, we pursue a counterintuitive approach by utilizing a rather destructive method to synthesize well‐defined materials with ...

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Unleashing the Potential of 17O NMR Spectroscopy Using Mechanochemistry

28.04.2017 | Thomas‐Xavier Métro, Christel Gervais, Anthony Martinez, Christian Bonhomme, Danielle Laurencin, Angewandte Chemie, 2017

Abstract 17O NMR spectroscopy has been the subject of vivid interest in recent years, because there is increasing evidence that it can provide unique insight into the structure and reactivity of many molecules and materials. However, due to the very poor natural abundance of oxygen‐17, ...

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Morphology‐Directed Selective Production of Ethylene or Ethane from CO2 on a Cu Mesopore Electrode

21.12.2016 | Ki Dong Yang, Woo Ri Ko, Jun Ho Lee, Sung Jae Kim, Hyomin Lee, Min Hyung Lee, Ki Tae Nam, Angewandte Chemie, 2016

Abstract The electrocatalytic conversion of CO2 to value‐added hydrocarbons is receiving significant attention as a promising way to close the broken carbon‐cycle. While most metal catalysts produce C1 species, such as carbon monoxide and formate, the production of various hydrocarbons and ...

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Single Fusion Events at Polarized Liquid–Liquid Interfaces

09.12.2016 | Eduardo Laborda, Angela Molina, Vanesa Fernández Espín, Francisco Martínez‐Ortiz, José García de la Torre, Richard G ..., Angewandte Chemie, 2016

Abstract A new electrochemical framework for tracking individual soft particles in solution and monitoring their fusion with polarized liquid–liquid interfaces is reported. The physicochemical principle lies in the interfacial transfer of an ionic probe confined in the particles dispersed in ...

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100 Jahre Einkristallzucht aus der Schmelze

21.11.2016 | Jürgen Evers, Christiane Herzog, Leonhard Möckl, Christoph von Plotho, Peter Stallhofer, Rudolf Staudigl, Chemie in unserer Zeit, 2016

Abstract Im August 1916 reichte der Deutsch‐Pole Jan Czochralski eine Publikation über die Wachstumsgeschwindigkeit von Metallkristallen bei der Zeitschrift für physikalische Chemie ein. Daher wird 1916 als das Jahr der Entdeckung des Czochralski‐Kristallzuchtverfahrens angesehen. Im ...

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Toehold‐Mediated Displacement of an Adenosine‐Binding Aptamer from a DNA Duplex by its Ligand

30.09.2016 | Jon H. Monserud, Katherine M. Macri, Daniel K. Schwartz, Angewandte Chemie, 2016

Abstract DNA is increasingly used to engineer dynamic nanoscale circuits, structures, and motors, many of which rely on DNA strand‐displacement reactions. The use of functional DNA sequences (e.g., aptamers, which bind to a wide range of ligands) in these reactions would potentially confer ...

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Metal Nanoparticle‐Catalyzed Reduction Using Borohydride in Aqueous Media: A Kinetic Analysis of the Surface Reaction by Microfluidic SERS

30.09.2016 | Wei Xie, Roland Grzeschik, Sebastian Schlücker, Angewandte Chemie, 2016

Abstract Hydrides are widely used in reduction reactions. In protic solvents, their hydrolysis generates molecular hydrogen as a second reducing agent. The competition between these two parallel reduction pathways has been overlooked so far since both typically yield the same product. We ...

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