Jump to main content
Jump to site search

Issue 1, 2012
Previous Article Next Article

Adsorption behaviour of sulfur containing polymers to gold surfaces using QCM-D

Author affiliations

Abstract

We investigate the influences that functional group, polymer molecular weight and polymer molecular architecture have on the adsorption behaviour of some sulfur containing oligo(ethylene glycol) polymers to gold. QCM-D and XPS was used in this investigation revealing that disulfide functional groups bind with more mass deposited than dithio, trithio or thiols. This was observed with small di(ethylene glycol) polymers and with higher mass polymers. The effect of the sulfo-groups was not as apparent with higher mass polymers. Longer PEG pendent chains resulted in lower binding overall on the gold surface in comparison to shorter DEG chains caused by shielding of sulfur by the longer pendent chains. Thiols undergo two steps during the adsorption process while all other sulfur species adsorb in one step. XPS revealed the dissociation of disulfide bonds when binding to gold. These findings are important when forming stable polymer films on gold efficiently, with uses in applications from bio-fouling to polymer-lipid bilayers.

Graphical abstract: Adsorption behaviour of sulfur containing polymers to gold surfaces using QCM-D

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Jul 2011, accepted on 19 Sep 2011 and first published on 13 Oct 2011


Article type: Paper
DOI: 10.1039/C1SM06410J
Citation: Soft Matter, 2012,8, 118-128
  •   Request permissions

    Adsorption behaviour of sulfur containing polymers to gold surfaces using QCM-D

    S. Slavin, A. H. Soeriyadi, L. Voorhaar, M. R. Whittaker, C. R. Becer, C. Boyer, T. P. Davis and D. M. Haddleton, Soft Matter, 2012, 8, 118
    DOI: 10.1039/C1SM06410J

Search articles by author

Spotlight

Advertisements