Minko, S. ; Kiriy, A. ; Gorodyska, G. ; Stamm, M.
Single Flexible Polyelectrolyte Molecules Adsorbed on Solid Substrate: Transition between a Stretched Chain, Necklace-like Conformation and a Globule

Single flexible polyelectrolyte molecules of poly(2-vinylpyridine) undergo conformational transition from a stretched wormlike coil to a necklace-like globule, and to a compact globule depending on pH and ionic strength in aqueous solution in good agreement with recent theoretical reports. AFM investigations allow the visualization of details of the chain conformation on mica and the extraction of quantitative statistics of molecular dimensions.

Quelle
Journal of the American Chemical Society 124

Seiten
3218-3219

DOI
http://dx.doi.org/10.1021/ja017767r

Erschienen am
May 2002