Macromolecular Rapid Communications
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Editors: Kirsten Severing , Stefan Spiegel
Online ISSN: 1521-3927
Materials Science Weekly Newsletter
Recently Published Articles
- Alkylphenyl Substituted Naphthodithiophene: A New Building Unit with Conjugated Side Chains for Semiconducting Materials
Shaowei Shi, Keli Shi, Rui Qu, Zupan Mao, Hanlin Wang, Gui Yu, Xiaoyu Li, Yongfang Li and Haiqiao Wang
Article first published online: 23 SEP 2014 | DOI: 10.1002/marc.201400403
A versatile 2-D conjugated polymer PNDTP-DPP, which contains alkylphenyl substituted naphthodithiophene as the donor unit, is synthesized and characterized. Investigation of polymer solar cells and organic field-effect transistors demonstrates a promising power conversion efficiency (PCE) of 4.11% and a high hole mobility of up to 0.86 cm2 V–1 s–1.
- Poly(isobutylene) Nanoparticles via Cationic Polymerization in Nonaqueous Emulsions
Thomas Schuster, Florian E. Golling, Joseph W. Krumpfer, Manfred Wagener, Robert Graf, Abdulhamid A. Alsaygh, Markus Klapper and Klaus Müllen
Article first published online: 23 SEP 2014 | DOI: 10.1002/marc.201400401
Poly(isobutylene) (PIB) nanoparticles are prepared in nonaqueous fluorinated emulsions. The required inert emulsifier for the oil-in-perfluoroalkane system is synthesized. The emulsifier is applied for the heterogeneous cationic polymerization of isobutylene yielding PIB number-average molecular weights () of 27 000 g mol−1. For > 20 000 g mol−1, the particles are shape-persistent at room temperature and ≈100 nm in diameter.
- Highly Active ppm Level Organic Copper Catalyzed Photo-Induced ICAR ATRP of Methyl Methacrylate
Xiaowu Jiang, Jian Wu, Lifen Zhang, Zhenping Cheng and Xiulin Zhu
Article first published online: 23 SEP 2014 | DOI: 10.1002/marc.201400393
Highly active organic copper catalyzed photo-induced polymerization of methyl methacrylate (MMA) by ICAR (initiators for continuous activator regeneration) atom transfer radical polymerization (ATRP) with ppm level catalyst concentration is conducted successfully. Moreover, the obtained poly(methyl methacrylate)s (PMMAs) have narrow molecular weight distributions and high end functionality.
- Mechanically Tailored Agarose Hydrogels through Molecular Alloying with β-Sheet Polysaccharides
Aurelien Forget, Raphaelle-Anne Pique, Vincent Ahmadi, Steffen Lüdeke and V. Prasad Shastri
Article first published online: 22 SEP 2014 | DOI: 10.1002/marc.201400353
Hydrogels with tunable mechanical properties are of major importance for studying cell biology in a tri-dimensional environment. The present work describes an alternative to chemical crosslinking through blending of two polysaccharides of different secondary structures. Through control of the β-sheet distribution and overall content, stiffness, topography, and fiber architecture of the resulting hydrogel can be tailored.
- Utilizing Stretch-Tunable Thermochromic Elastomeric Opal Films as Novel Reversible Switchable Photonic Materials
Christian G. Schäfer, Christina Lederle, Kristina Zentel, Bernd Stühn and Markus Gallei
Article first published online: 22 SEP 2014 | DOI: 10.1002/marc.201400421
A facile approach for the preparation of novel thermoresponsive spherical particle architectures as starting material for photonic bandgap materials is reported. By taking advantage of the melt-shear organization process and subsequent spatial UV-induced crosslinking strategies, elastomeric poly(diethylene glycol methylether methacrylate)-based opal films are produced and investigated with regard to their excellent thermochromic properties.