24.11.2017 | Fabian Kempe, Oliver Brügner, Hannah Buchheit, Sarah Noemi Momm, Felix Riehle, Sophie Hameury, Michael Walter, Micha ..., Angewandte Chemie, 2017

Abstract A simple and high‐yielding route to tough polyarylenes of the type poly(meta,meta,para‐phenylene) (PmmpP) is developed. PmmpP is tough even in its as‐synthesized state which has an intermediate molar mass of Mw≈60 kg mol−1 and exhibits outstanding mechanical properties at further ...

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02.10.2017 | Aritra Sarkar, Shikha Dhiman, Aditya Chalishazar, Subi J. George; Aritra Sarkar, Shikha Dhiman, Aditya Chalishazar, ..., Angewandte Chemie, 2017

Abstract Chirality‐driven self‐sorting is envisaged to efficiently control functional properties in supramolecular materials. However, the challenge arises because of a lack of analytical methods to directly monitor the enantioselectivity of the resulting supramolecular assemblies. Presented ...

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24.05.2017 | J. Valíček, M. Harničárová, M. Kušnerová, V. Václavík, I. Kopal, P. Koštial, Materialwissenschaft und Werkstofftechnik, 2017

Abstract This paper presents the characterization of engineering materials according to stress‐strain diagrams, according to the basic material, namely partially according to the basic material groups that correspond to the generally applicable division into metals, glasses, ceramics, ...

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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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03.05.2017 | Bart Verbraeken, Richard Hoogenboom, Angewandte Chemie, 2017

Cyclisch oder linear: Cyclische Polymere sind ihren linearen Pendants in mancherlei Hinsicht überlegen. Aufgepfropft auf TiO2‐Oberflächen und Fe3O4‐Nanopartikel lieferten cyclische Poly(2‐oxazoline) ausgezeichnete Abschirmungseigenschaften dank ihrer ultrahohen Pfropfdichten, die zu ...

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02.05.2017 | Avishai Levy, Feng Wang, Arad Lang, Or Galant, Charles E. Diesendruck, Angewandte Chemie, 2017

Abstract Many of the attractive properties in polymers are a consequence of their high molecular weight and therefore, scission of chains due to mechanochemistry leads to deterioration in properties and performance. Intramolecular cross‐links are systematically added to linear chains, slowing ...

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12.04.2017 | Julian D. Ruiz Perez, Stefan Mecking, Angewandte Chemie, 2017

Abstract The shape of nanoparticles is decisive for their self‐assembly properties, as well as for the behavior of individual particles in many instances. The introduction and control of anisotropy is well‐known for inorganic nanocrystals but a largely unresolved problem for polymer ...

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29.03.2017 | Daeok Kim, Ali Coskun, Angewandte Chemie, 2017

Abstract Controlling the arrangement of different metal ions to achieve ordered heterogeneity in metal–organic frameworks (MOFs) has been a great challenge. Herein, we introduce a template‐directed approach, in which a 1D metal–organic polymer incorporating well‐defined binding pockets for the ...

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28.03.2017 | Ye Liu, Hui Zhou, Jia‐Zhi Guo, Wei‐Min Ren, Xiao‐Bing Lu, Angewandte Chemie, 2017

Abstract It is of great significance to depolymerize used or waste polymers to recover the starting monomers suitable for repolymerization reactions that reform recycled materials no different from the virgin polymer. Herein, we report a novel recyclable plastic: degradable polycarbonate ...

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17.03.2017 | Daniel Leibig, Jan Morsbach, Eduard Grune, Jana Herzberger, Axel H.E. Müller, Holger Frey, Chemie in unserer Zeit, 2017

Zusammenfassung Vor sechzig Jahren entdeckte Michael Szwarc die lebende anionische Polymerisation. Trotz ihrer hohen synthetischen Anforderungen ist sie bis heute die präziseste Methode zur Herstellung von wohldefinierten Polymeren und inspirierte zahlreiche neue Polymerisationsmethoden. ...

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