Macromolecular Rapid Communications

Cover image for Vol. 32 Issue 5

March 2, 2011

Volume 32, Issue 5

Pages 415–480

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Contents
    5. Communications
    1. Macromol. Rapid Commun. 5/2011

      J. P. Rao and Kurt E. Geckeler

      Version of Record online: 22 FEB 2011 | DOI: 10.1002/marc.201190011

      Thumbnail image of graphical abstract

      Front Cover: Supramolecular and nanometer-sized structures are formed under ambient conditions from cyclodextrin. Surprisingly, these supra-macromolecules exhibit a high thermal stability and also high molar masses. In addition, their size and shape can be controlled by varying the reaction parameters. Further information can be found in the article by J. P. Rao and K. E. Geckeler*on page 426.

  2. Back Cover

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Contents
    5. Communications
    1. Macromol. Rapid Commun. 5/2011

      Kyung Jin Lee, Sangyeul Hwang, Jaewon Yoon, Srijanani Bhaskar, Tae-Hong Park and Joerg Lahann

      Version of Record online: 22 FEB 2011 | DOI: 10.1002/marc.201190012

      Thumbnail image of graphical abstract

      Back Cover: Biphasic particles and fibers are prepared by electrohydrodynamic co-jetting, followed by a compartmentalized photoreaction. Spatial photocrosslinking can result in an anisotropic microstructure. Further details can be found in the article by K. J. Lee, S. Hwang, J. Yoon, S. Bhaskar, T.-H. Park, and J. Lahann*on page 431.

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Contents
    5. Communications
    1. Macromol. Rapid Commun. 5/2011 (pages 415–418)

      Version of Record online: 22 FEB 2011 | DOI: 10.1002/marc.201190010

  4. Communications

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Contents
    5. Communications
    1. Azide/Alkyne-“Click”-Reactions of Encapsulated Reagents: Toward Self-Healing Materials (pages 419–425)

      Maria Gragert, Marlen Schunack and Wolfgang H. Binder

      Version of Record online: 17 JAN 2011 | DOI: 10.1002/marc.201000687

      Thumbnail image of graphical abstract

      The successful encapsulation of a liquid polymer (azido-telechelic three-arm star poly(isobutylene) (equation image=3900 g·mol−1)) together with a liquid alkyne for the azide/alkyne-“click”-reaction is reported. Using (CuIBr(PPh3)3) as catalyst for the azide/alkyne-“click”-reaction, crosslinking of the two components at 40°C is observed within 380min thus demonstrating a concept for self healing materials.

    2. Cyclodextrin Supramacromolecules: Unexpected Formation in Aqueous Phase under Ambient Conditions (pages 426–430)

      J. P. Rao and Kurt E. Geckeler

      Version of Record online: 7 JAN 2011 | DOI: 10.1002/marc.201000630

      Thumbnail image of graphical abstract

      The formation of nanosized structures based on cyclodextrin supramacromolecules under ambient conditions is reported for the first time. Interestingly, the size and shape of the supramacromolecules can be tuned by controlling the process parameters. In addition, these nanostructures exhibit high thermal stability and molecular masses.

    3. Compartmentalized Photoreactions within Compositionally Anisotropic Janus Microstructures (pages 431–437)

      Kyung Jin Lee, Sangyeul Hwang, Jaewon Yoon, Srijanani Bhaskar, Tae-Hong Park and Joerg Lahann

      Version of Record online: 10 DEC 2010 | DOI: 10.1002/marc.201000558

      Thumbnail image of graphical abstract

      Photoreactive colloids and microfibers have been prepared via electrohydrodynamic co-jetting. Spatially controlled photoreactions can be achieved by compartmentalization of photocrosslinkable polymer in one hemisphere only. Bicompartmental particles and fibers having different physical properties in each compartment can be prepared through this two-step approach.

    4. Towards Chiral Microporous Soluble Polymers—Binaphthalene-Based Polyimides (pages 438–443)

      Nicola Ritter, Irena Senkovska, Stefan Kaskel and Jens Weber

      Version of Record online: 24 JAN 2011 | DOI: 10.1002/marc.201000714

      Thumbnail image of graphical abstract

      A microporous poly(imide) based on enantiopure (+)-BINAM is synthesised and characterised with respect to its structure and porosity. Porosity analysis by gas physisorption shows a pronounced microporosity (SBET: 500m2·g−1, H2 uptake: 0.78 wt.-%). Microstructure characterisation by SAXS shows structural differences to the racemic counterpart. Further analysis of the polymer structure indicates however a partially racemised polymer with short helical domains.

    5. RAFT Mediated Polymerization of Methyl Methacrylate Initiated by Bergman Cyclization: Access to High Molecular Weight Narrow Polydispersity Polymers (pages 444–450)

      Peter Gerstel and Christopher Barner-Kowollik

      Version of Record online: 24 JAN 2011 | DOI: 10.1002/marc.201000730

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      RAFT polymerizations initiated via diradicalic Bergman cyclization can lead to high molecular weight polymers with narrow polydipersities under non-demanding reaction conditions.

    6. Dual Stimuli-Responsive Polymeric Micelles Exhibiting “AND” Logic Gate for Controlled Release of Adriamycin (pages 451–455)

      Chuan Wei, Jia Guo and Changchun Wang

      Version of Record online: 21 JAN 2011 | DOI: 10.1002/marc.201000708

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      Disulfide crosslinked hydrazone-bond-mediated polymer micelles are developed as a smart drug delivery system based on the concept of “AND” logic. When both pH and reduction meet the release requirement, the ADR can be quickly released and the amount reaches 61.0%. Such an ON [1,1] state imitates the condition of tumor tissues, and the nanocarriers will maximize the efficiency of ADR within tumor sites and eliminate damage to healthy tissues.

    7. Highly Efficient Synthesis of Low Polydispersity Core Cross-Linked Star Polymers by Ru-Catalyzed Living Radical Polymerization (pages 456–461)

      Tor Kit Goh, Satoshi Yamashita, Kotaro Satoh, Anton Blencowe, Masami Kamigaito and Greg G. Qiao

      Version of Record online: 7 JAN 2011 | DOI: 10.1002/marc.201000641

      Thumbnail image of graphical abstract

      The efficient formation of low polydispersity core cross-linked star (CCS) polymers via controlled/living radical polymerization (LRP) and the arm-first approach is explored using the highly efficient Ru catalyst, Ru(Ind)Cl(PPh3)2. Increased conversion efficiencies (≤20%) are observed over a range of macroinitiator molecular weights (equation image) and quantitative synthesis is observed for low equation image precursors. These findings are related to catalyst system efficiency and the star formation mechanism.

    8. Nanoreactor-Assisted Polymerization Toward Stable Dispersions of Conductive Composite Particles (pages 462–467)

      Alexey N. Korovin, Vladimir G. Sergeyev, Olga A. Pyshkina, Christoph Hanske, Andreas Fery, Alexander Wittemann and Larisa Tsarkova

      Version of Record online: 7 JAN 2011 | DOI: 10.1002/marc.201000626

      Thumbnail image of graphical abstract

      We demonstrate the effective functioning of a macromolecular nanoreactor which selectively localizes and controls the release of reagents in a finite volume. In this approach, spherical polyelectrolyte brushes (SPB) are used as templates for conductive dispersions of core–shell latex particles. SPBs ensure high kinetic stability of the conductive ink, as well as the improved conducting properties of the resulting composite.

    9. Towards the Generation of Self-Healing Materials by Means of a Reversible Photo-induced Approach (pages 468–473)

      Pablo Froimowicz, Holger Frey and Katharina Landfester

      Version of Record online: 21 JAN 2011 | DOI: 10.1002/marc.201000643

      Thumbnail image of graphical abstract

      Reversible photo-chemistry was exploited as a very powerful tool to generate not only a novel reversible photo-active dendritic macromonomer, but also light tunable and self-healing materials. The macromonomer was photo-crosslinked under different conditions. Networks produced in aqueous systems showed reversibility in their crosslinking degree whereas networks generated in bulk were fully reversible, which allowed their use to formulate photo-induced self-healing materials

    10. Fully Aromatic Block Copolymers for Fuel Cell Membranes with Densely Sulfonated Nanophase Domains (pages 474–480)

      Shogo Takamuku and Patric Jannasch

      Version of Record online: 29 DEC 2010 | DOI: 10.1002/marc.201000683

      Thumbnail image of graphical abstract

      Using an organometallic approach, poly(arylene ether sulfone)s with blocks having high concentrations of sulfonic acid units placed exclusively in stable ortho sulfone positions were successfully prepared. Proton exchange membranes based on the copolymers showed distinct and well-connected sulfonated nanophases, and high thermal stability and proton conductivity.

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