Macromolecular Rapid Communications

Cover image for Vol. 34 Issue 5

March 12, 2013

Volume 34, Issue 5

Pages 373–459

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Frontispiece
    6. Special Article Series - Feature Article
    7. Communications
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      Macromol. Rapid Commun. 5/2013 (page 373)

      Mi Ri Kim, Yong Taik Lim and Kuk Young Cho

      Version of Record online: 28 FEB 2013 | DOI: 10.1002/marc.201370014

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      Front Cover: Sub-10-μm sized poly(lactic-co-glycolic acid) microparticles with surface dimples are fabricated using a droplet imprinting method. Optical and magnetic resonance imaging agents are easily encapsulated to form bi-modal imaging particles for cell tracking and imaging applications. The image demonstrates cell internalization of dimpled particles in DC 2.4 cells. Further details can be found in the article by M. R. Kim, Y. T. Lim,* and K. Y. Cho* on page 406.

  2. Masthead

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Frontispiece
    6. Special Article Series - Feature Article
    7. Communications
    1. Macromol. Rapid Commun. 5/2013

      Version of Record online: 28 FEB 2013 | DOI: 10.1002/marc.201370015

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Frontispiece
    6. Special Article Series - Feature Article
    7. Communications
    1. You have free access to this content
  4. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Frontispiece
    6. Special Article Series - Feature Article
    7. Communications
    1. You have free access to this content
      Macromol. Rapid Commun. 5/2013 (page 379)

      Version of Record online: 28 FEB 2013 | DOI: 10.1002/marc.201370017

      Thumbnail image of graphical abstract

      Further details on this special series can be found on www.mrc-journal.de

  5. Special Article Series - Feature Article

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Frontispiece
    6. Special Article Series - Feature Article
    7. Communications
    1. Precision Biopolymers from Protein Precursors for Biomedical Applications (pages 380–392)

      Seah Ling Kuan, Yuzhou Wu and Tanja Weil

      Version of Record online: 31 JAN 2013 | DOI: 10.1002/marc.201200662

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      Proteins represent versatile macromolecular building blocks for the design of precision polymers and copolymers of high structural definition. Recent efforts in designing giant, multifunctional precision biopolymers from protein precursors are summarized. The simplicity and versatility of the synthetic strategy gives rise to a new generation of semi-synthetic, multicomponent biohybrid polymers, which offer the attachment of several functional entities and pave the way to sophisticated, on-demand biopolymers.

  6. Communications

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Frontispiece
    6. Special Article Series - Feature Article
    7. Communications
    1. Photoisomerizable and Thermoresponsive N-isopropylacrylamide–Surfmer Copolymer Hydrogels Prepared upon Electrostatic Self-Assembly of an Azobenzene Bolaamphiphile (pages 393–398)

      Tatjana Friedrich, Tamara Mielke, Monika Domogalla, Maria Hentschel, Katharina Kraus and Bernd Tieke

      Version of Record online: 28 JAN 2013 | DOI: 10.1002/marc.201200630

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      A bi-responsive hydrogel is described. Upon temperature variation, it can be switched between a transparent swollen and a turbid de-swollen state. Upon exposure to UV or visible light it can be switched between the cis (Z)- and the trans (E)-isomeric state. The two switching processes are linked with each other: Photoisomerization only occurs in the transparent state, and the isomer structures can be frozen in by heating the gel to the turbid state.

    2. A Facile Method for the Preparation of Monodisperse Beads with Uniform Pore Sizes for Cell Culture (pages 399–405)

      Seung-Kwan Moon, Myeong-Jin Oh, Dong-Hyun Paik, Tae-Kyung Ryu, Kyeongsoon Park, Sung-Eun Kim, Jong-Hoon Park, Jung-Hyun Kim and Sung-Wook Choi

      Version of Record online: 9 JAN 2013 | DOI: 10.1002/marc.201200711

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      Monodisperse gelatin beads with a uniform pore size are fabricated using a simple fluidic device. The monodisperse beads have a uniform and well-interconnected pore structure as well as highly open pores at the perimeter. These beads can be used as cell carriers for various biomedical applications.

    3. Biodegradable Microparticles with Surface Dimples as a Bi-Modal Imaging Contrast Agent (pages 406–410)

      Mi Ri Kim, Yong Taik Lim and Kuk Young Cho

      Version of Record online: 25 JAN 2013 | DOI: 10.1002/marc.201200729

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      Morphology-controlled sub-10-μm-sized biodegradable microparticles containing bi-modal imaging contrast agents are fabricated. Improved cell internalization of dimpled-microparticle into DC 2.4 cells are observed from a flow cytometric analysis.

    4. Thermoresponsive Synergistic Hydrogen Bonding Switched by Several Guest Units in a Water-Soluble Polymer (pages 411–416)

      Zhenhua Hao, Guangxiang Li, Ke Yang and Yuanli Cai

      Version of Record online: 3 JAN 2013 | DOI: 10.1002/marc.201200685

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      Thermoresponsive synergistic hydrogen bonding can be switched simply by adjusting the distribution of several guest H-bonding units in a water-soluble polymer, thus widely tuning the preorganization and thermoresponsive behavior. This is a general approach toward wide tunability of thermosensitivity for water-soluble polymers.

    5. Hofmeister Effect of Sodium Halides on the Switching Energetics of Thermoresponsive Polymer Brushes (pages 417–422)

      Crispin Amiri Naini, Marc Thomas, Steffen Franzka, Sven Frost, Mathias Ulbricht and Nils Hartmann

      Version of Record online: 8 JAN 2013 | DOI: 10.1002/marc.201200681

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      The impact of sodium halides on the switching behavior of poly(N-isopropylacrylamide) brushes is investigated, providing unprecedented data on thermodynamic driving forces. These results represent an essential reference on the way to unpuzzle the molecular origin of the Hofmeister effect and have immediate implications for advanced applications of such thermoresponsive brushes as miniaturized sensors and actuators, e.g., in drug delivery and microfluidics.

    6. Macroporous Oxide Platforms Templated by Non-Close-Packed Spherical Copolymer Aggregates (pages 423–430)

      Tatsuo Kimura

      Version of Record online: 20 DEC 2012 | DOI: 10.1002/marc.201200765

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      Exclusive organic templating of macroporous oxide films is reported by using non-closed and lose packing of spherical copolymer aggregates, in combination with facile control of condensation degree/density of inorganic oxide frameworks during anisotropic shrinkage. Unique macroporous oxide films, mainly titania showing highly porous, crystalline, and versatile properties, can be fabricated with continuous design from unusual 3-D net-shape (macroreticular) to tunable spherical macrostructures.

    7. Near-Infrared Responsive Conjugated Polymers to 1.5 μm and Beyond: Synthesis and Electrochromic Switching Application (pages 431–436)

      Tao Tang, Guoqiang Ding, Tingting Lin, Hong Chi, Chen Liu, Xuehong Lu, FuKe Wang and Chaobin He

      Version of Record online: 27 DEC 2012 | DOI: 10.1002/marc.201200695

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      Near-infrared responsive conjugated polymers with absorption up to 1.5 μm and above are designed and synthesized. DFT calculations attribute the near-infrared absorption to intra-molecular charge transfer on the polymer backbone. Electrochromic devices based on these polymers show a ten-fold enhancement in electrochromic contrast and significantly improved stability in the presence of TFA.

    8. Statistical Conjugated Polymers Comprising Optoelectronically Distinct Units (pages 437–441)

      Jon Hollinger, J. Sun, D. Gao, D. Karl and D. S. Seferos

      Version of Record online: 17 JAN 2013 | DOI: 10.1002/marc.201200777

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      Poly(3-heptylselenophene)-stat-poly(3-hexylthiophene) is synthesized, characterized, and fabricated into photovoltaic devices. The copolymers are crystalline despite the random distribution of units along the backbone. Optoelectronic properties of the copolymer are an approximate average of the corresponding homopolymers, while the morphological properties are distinct.

    9. New Water-Soluble Cationic Poly(p-phenylenevinylene) Derivative: the Interaction with DNA and Selective Fluorescence Enhancement Induced by ssDNA (pages 442–446)

      Wenjun Zhang, Li Xu, Jingui Qin and Chuluo Yang

      Version of Record online: 16 JAN 2013 | DOI: 10.1002/marc.201200696

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      A new cationic cyano-substituted poly(p-phenylenevinylene) (N-CNPPV) is designed and synthesized by Knoevenagel condensation. The interaction of the new polyelectrolyte with DNA is studied, and selective fluorescence enhancement is induced by ssDNA.

    10. Tunable Thermoresponsive Pyrrolidone-Based Polymers from Pyroglutamic Acid, a Bio-Derived Resource (pages 447–451)

      Rajani Bhat and Agostino Pietrangelo

      Version of Record online: 15 JAN 2013 | DOI: 10.1002/marc.201200735

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      A series of N-acryloylpyrrolidone monomers bearing alkoxy residues is prepared from pyroglutamic acid. These monomers can be (co)polymerized to afford polymers with tunable lower critical solution temperatures in water.

    11. Synthesis of Porous, Nitrogen-Doped Adsorption/Diffusion Carbonaceous Membranes for Efficient CO2 Separation (pages 452–459)

      Xiang Zhu, Songhai Chai, Chengcheng Tian, Pasquale F. Fulvio, Kee Sung Han, Edward W. Hagaman, Gabriel M. Veith, Shannon M. Mahurin, Suree Brown, Honglai Liu and Sheng Dai

      Version of Record online: 28 FEB 2013 | DOI: 10.1002/marc.201200793

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      A porous, nitrogen-doped adsorption/diffusion carbonaceous membrane (TFMT-550) is facilely prepared from a triazole-functionalized-triazine framework, exhibiting a good membrane separation performance of CO2 over N2 and surpassing the recent upper (Robeson) bound. An exceptional ideal CO2/N2 permselectivity of 47.5 is achieved with a good CO2 permeability of 2.40 × 10−13 mol m m−2 s−1 Pa−1.

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