Single polymer chain rubber elasticity investigated by atomic force microscopy

Ken Nakajima, Hiroyuki Watabe, Toshio Nishi

    Research output: Contribution to journalArticlepeer-review

    32 Citations (Scopus)

    Abstract

    A method, which is called as 'nanofishing', enabled us to stretch a single polymer chain adsorbed on an Au(111) substrate with picking it at its two thiol-modified termini using atomic force microscope equipped with a gold-coated probe. A force-extension curve obtained for a single polystyrene chain in a Θ solvent (cyclohexane) showed a good agreement with a so-called worm-like chain model, and thus gave microscopic information about entropic elasticity. Solvent effects on the statistical properties of single polymer chains were also investigated. For example, the second virial coefficient in cyclohexane was determined at a single polymer basis, which was almost comparable with a simple Flory's lattice model.

    Original languageEnglish
    Pages (from-to)2505-2510
    Number of pages6
    JournalPolymer
    Volume47
    Issue number7
    DOIs
    Publication statusPublished - 2006 Mar 22

    Keywords

    • Atomic force microscopy
    • Entropic elasticity
    • Virial coefficient

    ASJC Scopus subject areas

    • Organic Chemistry
    • Polymers and Plastics
    • Materials Chemistry

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