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

9 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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