Advanced Materials

Surfactant-Assisted Orientation of Thin Diblock Copolymer Films

Authors

  • Jeong Gon Son,

    1. Center for Functional Polymer Thin Films Seoul National University Seoul, 151-744 (Korea)
    2. Interdisciplinary Program in Nano-Science and Technology Seoul National University Seoul, 151-744 (Korea)
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  • Xavier Bulliard,

    1. Center for Functional Polymer Thin Films Seoul National University Seoul, 151-744 (Korea)
    2. School of Chemical and Biological Engineering Seoul National University Seoul, 151-744 (Korea)
    3. Present Address: Samsung Advanced Institute of Technology, P. O. Box 111, Suwon 440-600, Korea
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  • Huiman Kang,

    1. Department of Chemical and Biological Engineering University of Wisconsin–Madison Madison, WI 53706 (USA)
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  • Paul F. Nealey,

    1. Department of Chemical and Biological Engineering University of Wisconsin–Madison Madison, WI 53706 (USA)
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  • Kookheon Char

    Corresponding author
    1. Center for Functional Polymer Thin Films Seoul National University Seoul, 151-744 (Korea)
    2. Interdisciplinary Program in Nano-Science and Technology Seoul National University Seoul, 151-744 (Korea)
    3. School of Chemical and Biological Engineering Seoul National University Seoul, 151-744 (Korea)
    • Center for Functional Polymer Thin Films Seoul National University Seoul, 151-744 (Korea).
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  • This work was financially supported by the Korea Science and Engineering Foundation (KOSEF) grant through the Acceleration Research and the NANO Systems Institute – National Core Research Center funded by the Ministry of Science and Technology (R17-2007-059-01000-0 and R15-2003-032-02002-0), the Neutron Beam Research funded by the Ministry of Science and Technology (2007-00808), the Brain Korea 21 Program endorsed by the Ministry of Education of Korea and the Seoul Science Fellowship. Additional financial support of the Swiss National Foundation for Scientific Research (SNFS) for X.B. is acknowledged (PBEL2-110173). This work is also performed by the Collaborative Program of Nanoscale Science and Engineering Center of National Science Foundation (NSF) (DMR-0425880). We would like to thank Dr. M. Hino at Kyoto University for assistance on neutron reflectivity experiment that was performed in MINE beamline at JRR-3M of JAEA and Dr. Kwang Woo Kim at the Pohang Light Source for assisting the grazing incidence small angle X-ray scattering measurements. Supporting Information is available online from Wiley InterScience or from the authors.

Abstract

The addition of surfactants, which preferentially interact with the PMMA block domains, modifies the surface energy of the system by making the surface energy difference between the two blocks almost equal, resulting in the perpendicular orientation of microphase separated domains in the film.

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