Journal of Polymer Science Part B: Polymer Physics

Cover image for Vol. 51 Issue 1

1 January 2013

Volume 51, Issue 1

Pages i–ii, 1–85

  1. Cover Image

    1. Top of page
    2. Cover Image
    3. Editorials
    4. Reviews
    5. Communications
    6. Full Papers
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      Cover Image, Volume 51, Issue 1 (pages i–ii)

      Version of Record online: 27 NOV 2012 | DOI: 10.1002/polb.23211

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      Nanometer-scaled square arrays of block copolymers are of particular interest to the electronics industry because they are more compatible with semiconductor integrated circuit design standards based on a rectilinear system. However, they are more difficult to achieve due to the unique demands the geometry places on polymer compositions and chemistry. On page 2, Christopher G. Hardy and Chuanbing Tang review recent advances in the development of square arrays of block copolymers by self-assembly and directed selfassembly. Applications in nanolithography and future directions are discussed.

  2. Editorials

    1. Top of page
    2. Cover Image
    3. Editorials
    4. Reviews
    5. Communications
    6. Full Papers
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      “We can do it faster.” (page 1)

      Vicki Cleave

      Version of Record online: 27 NOV 2012 | DOI: 10.1002/polb.23205

  3. Reviews

    1. Top of page
    2. Cover Image
    3. Editorials
    4. Reviews
    5. Communications
    6. Full Papers
    1. You have free access to this content
      Advances in square arrays through self-assembly and directed self-assembly of block copolymers (pages 2–15)

      Christopher G. Hardy and Chuanbing Tang

      Version of Record online: 26 SEP 2012 | DOI: 10.1002/polb.23174

      Thumbnail image of graphical abstract

      Nanometer-scaled square arrays of block copolymers are of particular interest to the electronics industry because they are more compatible with semiconductor integrated circuit design standards based on a rectilinear system. However, they are more difficult to achieve due to the unique demands the geometry places on polymer compositions and chemistry. Here, recent advances in the development of square arrays of block copolymers by self-assembly and directed self-assembly are reviewed. Applications in nanolithography and future directions are discussed.

    2. You have free access to this content
      Roll-to-Roll fabrication of large area functional organic materials (pages 16–34)

      Roar R. Søndergaard, Markus Hösel and Frederik C. Krebs

      Version of Record online: 19 OCT 2012 | DOI: 10.1002/polb.23192

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      There is a growing need to be able to process large areas of functional organic thin films with high precision using roll-to-roll (R2R) methods. An introduction is given to different R2R techniques that could be useful in the processing of organic electronics and furthermore an overview is provided of the current status of R2R application within several research fields including organic photovoltaics, organic thin film transistors, light-emitting diodes, and electrochromic devices.

  4. Communications

    1. Top of page
    2. Cover Image
    3. Editorials
    4. Reviews
    5. Communications
    6. Full Papers
    1. Asymmetric leakage in (Ba, Sr)TiO3 nanoparticle/parylene-C composite capacitors (pages 35–38)

      Shyuan Yang, Brian R. Tull, Nadia K. Pervez, Limin Huang, Eli S. Leland, Daniel A. Steigart, Stephen O'Brien and Ioannis Kymissis

      Version of Record online: 28 AUG 2012 | DOI: 10.1002/polb.23156

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      Nanoparticle–polymer composite capacitors have been examined for some time as a route to high performance, printable capacitors. This study demonstrates both the advantage of the asymmetric composite capacitor construction through combination of vapor deposited polymers with spin-coated (Ba, Sr)TiO3 nanoparticles, and that proper application of the device bias in this type of asymmetrical system can yield additional improvement in voltage tolerance and leakage current.

  5. Full Papers

    1. Top of page
    2. Cover Image
    3. Editorials
    4. Reviews
    5. Communications
    6. Full Papers
    1. Click coupled graphene for fabrication of high-performance polymer nanocomposites (pages 39–47)

      Santosh Kumar Yadav, Hye Jin Yoo and Jae Whan Cho

      Version of Record online: 28 AUG 2012 | DOI: 10.1002/polb.23155

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      A promising technique to improve the properties of polymer-graphene nanocomposites is to functionalize graphene to induce the covalent attachment of a polymer chain onto it. Poly(ε-caprolactone) (PCL)-click coupled graphene sheet (GS) reinforcing fillers are synthesized by covalent functionalization of graphene oxide with PCL. The results reveal that PCL chains are attached to the surfaces of the graphene sheets, which suggests good compatibility between the GS and the PCL. Dark elliptical spots on the GS surface are ubiquitous and reveal the morphology of the grafted PCL chains.

    2. Synthesis, solid-state, and charge-transport properties of conjugated polythiophene-S,S-dioxides (pages 48–56)

      Justin E. Cochran, Elizabeth Amir, Kulandaivelu Sivanandan, Sung-Yu Ku, Jung Hwa Seo, Brian A. Collins, John R. Tumbleston, Michael F. Toney, Harald Ade, Craig J. Hawker and Michael L. Chabinyc

      Version of Record online: 11 SEP 2012 | DOI: 10.1002/polb.23167

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      The synthesis of semiconducting polymers with low lying lowest unoccupied molecular orbital levels has drawn much attention owing to the need for stable n-type polymers. Here, detailed characterization is reported of a thiophene-S,S-dioxide polymer that has a lower optical and electrical band gap than the analogous thiophene polymers. This new polymer forms crystalline thin films with slipped stacked packing similar to its oligomers. The impact of the thiophene-S,S-dioxide group on electrical performance is presented.

    3. Polypyrrole stretchable actuators (pages 57–63)

      Wen Zheng, Gursel Alici, Philip R. Clingan, Bridget J. Munro, Geoffrey M. Spinks, Julie R. Steele and Gordon G. Wallace

      Version of Record online: 28 SEP 2012 | DOI: 10.1002/polb.23177

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      A simple way to prepare stretchable polypyrrole (PPy)-based actuator materials was developed so that it can be operated over a wide dynamic strain range and generate useable actuation displacements and pressures. The stretchable actuators were prepared as a laminated composite of PPy and a gold-coated roughened rubber sheet. By manipulating the corrugated surface of the rubber substrate, the stretchability of PPy was greatly improved.

    4. Morphological studies of blends of conjugated polymers and acceptor molecules using langevin dynamics simulations (pages 64–77)

      Hilary S. Marsh and Arthi Jayaraman

      Version of Record online: 5 OCT 2012 | DOI: 10.1002/polb.23181

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      Molecular simulations are useful tools for conducting systematic studies of blends of conjugated polymers and acceptor molecules to understand how various parameters related to the polymer and acceptor affect the overall phase behavior and blend morphology. Coarse-grained simulations of blends of generic conjugated polymers and acceptor molecules (e.g., fullerene derivatives) demonstrate the effect of conjugated polymer architecture and chemistry and acceptor chemistry on blend morphology and phase transition. Depending on the strength of the pair-wise interactions between the various blend components, pure phase segregated domains, interconnecting domains, or mixed domains are formed.

    5. Synthesis and morphology investigations of a novel alkyne-functionalized diblock copolymer (pages 78–85)

      Xinyu Wei, Weiyin Gu, Le Li, Xiaobo Shen, Jung-Keun Kim and Thomas P. Russell

      Version of Record online: 9 OCT 2012 | DOI: 10.1002/polb.23183

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      Nanostructured, functionalized surface patterns are important for applications that require, for example, selective absorption of proteins. A novel alkyne-functionalized diblock copolymer has been successfully synthesized using atom transfer radical polymerization. Microphase separation was observed both in the bulk and in the thin films. The orientation of microdomains in thin films can be conveniently tailored through solvent annealing, which is promising for fabrication of nanoscaled surface patterns using alkyne/azide click chemistry.

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