Dynamics Gradient of Polymer Chains near a Solid Interface

Hung K. Nguyen, Shin Sugimoto, Asuka Konomi, Manabu Inutsuka, Daisuke Kawaguchi, Keiji Tanaka

    Research output: Contribution to journalArticlepeer-review

    43 Citations (Scopus)


    The relaxation dynamics of polyisoprene (PI) and nitrile butadiene rubber (NBR) chains at the SiO2 interface were directly probed as a function of distance from the SiO2 surface using time-resolved evanescent wave-induced fluorescence anisotropy, dielectric relaxation spectroscopy, and sum-frequency generation spectroscopy. We found the presence of the dynamics gradient of chains in the interfacial region with the SiO2 surface and tried to assign it to the two kinds of adsorbed chains, namely, loosely and strongly adsorbed, at the interface. The segmental relaxation of chains in the strongly adsorbed layer at the interface could be slower than that of bulk chains by more than 10 orders.

    Original languageEnglish
    Pages (from-to)1006-1011
    Number of pages6
    JournalACS Macro Letters
    Issue number8
    Publication statusPublished - Aug 20 2019

    All Science Journal Classification (ASJC) codes

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


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