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
- One-Step Synthesis of Natural Silk Sericin-Based Microcapsules with Bionic Structures
Zhaogang Liu, Yurong Cai, Yaru Jia, Lin Liu, Xiangdong Kong, Subhas C. Kundu and Juming Yao
Article first published online: 28 AUG 2014 | DOI: 10.1002/marc.201400304
A one-step and environment-friendly method is developed to generate a series of silk sericin-based microcapsules with bionic structures depending on the change of Ca2+ concentration and agitation speed. The as-prepared cocoon-like microcapsules exhibit a pH-dependent stability with potential applications as controlled bioactive molecules loading and a release system.
- Supramolecular Adhesives to Hard Surfaces: Adhesion Between Host Hydrogels and Guest Glass Substrates Through Molecular Recognition
Yoshinori Takashima, Taiga Sahara, Tomoko Sekine, Takahiro Kakuta, Masaki Nakahata, Miyuki Otsubo, Yuichiro Kobayashi and Akira Harada
Article first published online: 27 AUG 2014 | DOI: 10.1002/marc.201400324
Hydrogels with cyclic host molecules selectively adhere to guest molecules modified glass substrates. Adhesion depends on the affinity of guest molecules with host molecules. External stimuli regulate the adhesion between host hydrogels and guest substrates. The host molecules of the host hydrogel precisely recognize the hydrophobicity of guest molecules on the glass substrates to create an adhesive force.
- Stable Cross-linked Fluorescent Polymeric Nanoparticles for Cell Imaging
Haiyin Li, Xiqi Zhang, Xiaoyong Zhang, Bin Yang, Yang Yang and Yen Wei
Article first published online: 27 AUG 2014 | DOI: 10.1002/marc.201400309
Stable cross-linked fluorescent polymeric nanoparticles are facilely prepared based on an aggregation-induced emission dye via a two-step polymerization including emulsion polymerization and subsequent anhydride cross-linking. These cross-linked polymers are easy to self-assemble into uniform nanoparticles that show high water dispersibility, intense red fluorescence, and excellent biocompatibility, making them promising for cell imaging applications.
- Complex Macrophase-Separated Nanostructure Induced by Microphase Separation in Binary Blends of Lamellar Diblock Copolymer Thin Films
Jianqi Zhang, Dorthe Posselt, Detlef-M. Smilgies, Jan Perlich, Konstantinos Kyriakos, Sebastian Jaksch and Christine M. Papadakis
Article first published online: 26 AUG 2014 | DOI: 10.1002/marc.201400238
Nanostructures of thin films made of binary blends of diblock copolymers are investigated by atomic force microscopy (AFM) and grazing-incidence small-angle X-ray scattering (GISAXS). For the as-prepared thin films, microphase-separated nanostructures are obtained, and the high molar mass copolymer determines the orientation of the lamellae. After solvent vapor annealing, macrophase-separated nanostructures appear featuring parallel lamellae near the film surface and perpendicular ones in the bulk.
- Cu(II)-Mediated Atom Transfer Radical Polymerization of Methyl Methacrylate via a Strategy of Thermo-Regulated Phase-Separable Catalysis in a Liquid/Liquid Biphasic System: Homogeneous Catalysis, Facile Heterogeneous Separation, and Recycling
Jinlong Pan, Bingjie Zhang, Xiaowu Jiang, Lifen Zhang, Zhenping Cheng and Xiulin Zhu
Article first published online: 25 AUG 2014 | DOI: 10.1002/marc.201400277
A strategy of thermo-regulated phase-separable catalysis (TPSC) is applied to the Cu(II)-mediated atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) in a p-xylene/PEG-200 biphasic system. It is a facile strategy involving successful separation and recycling of the catalyst complex from polymer products in situ. Well-defined PMMA with designable molecular weight and narrow molecular weight distribution can be obtained with this system, which may have strong potential for the industrial application of the ATRP technique.