Imidazole and Triazole Coordination Chemistry for Antifouling Coatings

Figure 6

Medetomidine absorption (measured using QCM-D and SPR) to a Cu²⁺ doped, Zn²⁺ doped, and metal free 21 nm thick PVM film. It is apparent that metal coordination significantly enhances medetomidine adsorption and that the coordination to Cu²⁺ is stronger and less reversible. Reprinted from [40]. The combination of QCM-D and SPR measurements can be used to estimate the amount of sorbed solvent in an adsorbed film. The acoustic QCM-D technique probes the entire adsorbed viscoelastic layer, including bound solvent. In contrast, the SPR method measures changes in refractive index at the surface and consequently takes only the mass of the adsorbent into account. The difference in adsorbed mass from QCM-D and SPR measurements can therefore be related to the amount of solvent.