Polymer lateral diffusion at the solid-liquid interface

Jiang Zhao, Steve Granick

Research output: Contribution to journalArticlepeer-review


Measurements are presented of how polymer surface diffusion at the solid-liquid interface is controlled by surface coverage. The method of measurement was fluorescence correlation spectroscopy (FCS), and the system was poly(ethylene oxide) (PEG) adsorbed onto methyl-terminated self-assembled monolayers in buffered aqueous solution. The translational diffusion coefficient at first increased with increasing surface concentration, presumably because the number of adsorption sites per molecule decreased. Ultimately it slowed by 1 order of magnitude, presumably reflecting jamming by neighboring chains.

Original languageEnglish (US)
Pages (from-to)6242-6243
Number of pages2
JournalJournal of the American Chemical Society
Issue number20
StatePublished - May 26 2004
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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