A Direct Approach to Giant Gyroid Structures from Block Copolymer Self-Assembly

ORAL

Abstract

A gyroid structure obtained from block copolymer (BCP) self-assembly is regarded as a unique complex structure, and its structural character promises a prospective route to produce uniform arrays adjustable in periodicity depending on its molecular weight. In this study, we investigate a feasible approach to the direct development of gyroid nanostructure in high-molecular-weight, composition-controlled polystyrene-b-poly (methyl methacrylate) (PS-b-PMMA) films. The use of a neutral solvent vapor to elaborately control the swelling of BCP films is essential to generate a direct pathway to gyroid structure through a hexagonal cylindrical morphology in the same material. Moreover, the influence of interfacial interactions from substrate to final morphology was explored. In the final formation of film structures, we identified the two different gyroid planes on the surface throughout the interior of the films.

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Presenters

  • Sungmin Park

    • Department of Chemical and Biomolecular Engineering, Yonsei University
    • Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute
    • Chemical and Biomolecular Engineering, Yonsei University
    • Yonsei University

Authors

  • Sungmin Park

    • Department of Chemical and Biomolecular Engineering, Yonsei University
    • Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute
    • Chemical and Biomolecular Engineering, Yonsei University
    • Yonsei University

  • Pil Yoo

    • School of Chemical Engineering and SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University

  • Su-Mi Hur

    • Polymer Science and Engineering, Chonnam National University
    • Department of Polymer Science and Engineering, Chonnam National University
    • Polymer Science, Chonnam National University

  • Du Yeol Ryu

    • Department of Chemical and Biomolecular Engineering, Yonsei University
    • Yonsei Univ
    • Chemical & Biomolecular Engineering, Yonsei Univ
    • Chemical and Biomolecular Engineering, Yonsei University
    • Yonsei University