Direct Observation of Conformational Relaxation of Polymer Chains at Surfaces

Hung K. Nguyen, Manabu Inutsuka, Daisuke Kawaguchi, Keiji Tanaka

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)


    Sum-frequency generation spectroscopy was employed to follow the conformation evolution of polystyrene chains at the surface of a spin-coated film in a temperature-ramping mode as well as under isothermal annealing. The conformation of surface chains in an as-cast film was observed to be in a nonequilibrium state, in accordance with reported results for polymer chains in thin spin-coated films. While the relaxation of surface nonequilibrium chains was induced by the enhanced surface mobility, the whole chain motion such as reptation might be a key factor in determining the time scale for equilibrating the surface chain conformation.

    Original languageEnglish
    Pages (from-to)1198-1202
    Number of pages5
    JournalACS Macro Letters
    Issue number10
    Publication statusPublished - Oct 16 2018

    All Science Journal Classification (ASJC) codes

    • Organic Chemistry
    • Polymers and Plastics
    • Inorganic Chemistry
    • Materials Chemistry


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