Macromolecular Rapid Communications

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Recently Published Articles

  1. Surface Grafting via Photo-Induced Copper-Mediated Radical Polymerization at Extremely Low Catalyst Concentrations

    Joachim Laun, Mariia Vorobii, Andres de los Santos Pereira, Ognen Pop-Georgievski, Vanessa Trouillet, Alexander Welle, Christopher Barner-Kowollik, Cesar Rodriguez-Emmenegger and Thomas Junkers

    Article first published online: 6 JUL 2015 | DOI: 10.1002/marc.201500322

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    Surface-initiated photo-induced copper-mediated radical polymerization is employed to graft a wide range of polyacrylate brushes from silicon substrates at extremely low catalyst concentrations. Block copolymer formation and re-initiation experiments evidence good control over the reaction. In addition to unmatched copper catalyst concentrations in the range of few ppb, film thicknesses up to almost 1 μm are achieved within only 1 h.

  2. Electrical Stimulation of Human Mesenchymal Stem Cells on Conductive Nanofibers Enhances their Differentiation toward Osteogenic Outcomes

    John G. Hardy, Maria K. Villancio-Wolter, Rushi C. Sukhavasi, David J. Mouser, David Aguilar Jr., Sydney A. Geissler, David L. Kaplan and Christine E. Schmidt

    Article first published online: 6 JUL 2015 | DOI: 10.1002/marc.201500233

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    Stimuli-responsive materials enabling the behavior of the cells that reside within them to be controlled are vital for the development of instructive tissue scaffolds for tissue engineering. Herein, the electrically conductive nanofibrous bone tissue scaffolds are described that enhance the differentiation of human mesenchymal stem cells toward osteogenic outcomes.

  3. Construction and Self-Assembly of Single-Chain Polymer Nanoparticles via Coordination Association and Electrostatic Repulsion in Water

    Zhengguang Zhu, Na Xu, Qiuping Yu, Lei Guo, Hui Cao, Xinhua Lu and Yuanli Cai

    Article first published online: 3 JUL 2015 | DOI: 10.1002/marc.201500281

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    Cu(II)-bonded aqueous single-chain nano­particles (SCNPs) can be achieved via simultaneous coordination-association/electrostatic-repulsion interactions in single chains of histamine-based block copolymer in acidic water. SCNPs are stabilized in acidic water and can self-assemble into micelles, networks, and large aggregates programmably upon alkalization of the solution. Such unique media-sensitive phase-transformation behaviors provide a general, facile, and versatile platform for construction of enzyme-inspired smart aqueous catalysts.

  4. Synthesis of Cross-Linked Polymeric Micelle pH Nanosensors: An Investigation of Design Flexibility

    E. K. Pramod Kumar, Rasmus I. Jølck and Thomas L. Andresen

    Article first published online: 2 JUL 2015 | DOI: 10.1002/marc.201500236

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    Shell stabilized polymeric core–shell–corona micelle-based ratiometric pH nanosensors are synthesized using click chemistry via two different design strategies, mixed micellization and postmicelle modifications. Mixed micellization reduces the requirement of dimensional synthetic modification of the micelles and hence provides more precise knowledge of the overall composition of the nanosensors. Both strategies provide nanosensors having a similar pH sensitivity range.

  5. Efficient Synthesis of Single-Chain Globules Mimicking the Morphology and Polymerase Activity of Metalloenzymes

    Ana Sanchez-Sanchez, Arantxa Arbe, Joachim Kohlbrecher, Juan Colmenero and José A. Pomposo

    Article first published online: 2 JUL 2015 | DOI: 10.1002/marc.201500252

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    Metalloenzyme mimicking characteristics of bioinspired water-borne unimolecular globules constructed via single-chain technology allow controlled synthesis of water-soluble polymers and thermoresponsive hydrogels.

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