Figure 12

From: The roles of water molecules at the biointerface of medical polymers

Figure 12

Force–separation curves recorded for symmetric systems of the self-assembled monolayers (SAMs; the same SAMs prepared for both the probe and substrate) in a PBS (phosphate-buffered saline) buffer solution. The effect of the terminal groups on the interaction was systematically explored. The chemical structures of the thiols constituting the SAMs are EG3-OH: HS-(CH2)11-(O-CH2-CH2)3-OH, OH: HS-(CH2)11-OH, COOH: HS-(CH2)11-COOH, NH2: HS-(CH2)11-NH2, and C8: HS-(CH2)7-CH3. Copyright 2012 Royal Society of Chemistry. A full color version of this figure is available at Polymer Journal online.