Figure 7. Net repulsive forces induced by STLs on a naked bilayer without receptors.
Approach curves after subtraction of the constant charge DLVO contribution, for the sample architecture displayed in Fig. 1 and for the reference experiment with the same STL content but without cholesteryl β-CD receptor. The dashed lines correspond to Milner–Witten–Cates (MWC) fits18,19,20 for monodisperse polymers. The full lines represent MWC fits numerically corrected for polydispersity (polydispersity index=1.25). As expected we find similar brush heights for both samples: h0=13.8±0.5 nm without β-CD and 14.2±0.5 nm with β-CD.