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Figure 1.a) Reaction scheme of the immoblilisation of heparin on titania by dint of APMS and b) further spacer molecules used as coupling agents for heparin.
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Figure 2.Zeta potentials after functionalisation of TiO2 powder with APMS, Di- and Triamino-APMS and respectively after the reaction with heparin. Each data point is the mean of three samples, error bars are standard deviations.
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Figure 3.Remaining potencies of heparin immobilised by the spacers APMS, Di- and Triamino-APMS. Each data point is the mean of three samples and error bars are standard deviations.
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Figure 4.Hydrolysis of heparin from the spacer molecules APMS, Di- and Triamino-APMS in aqueous medium. Each data point is the mean of three samples and error bars are standard deviations.
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Figure 5.Δf (decreasing curves) and ΔD (increasing curves) of the adsorption of fibrinogen on surfaces functionalised with APMS/Di/Tri(amino-)APMS and Hep(arin) in real-time.
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Figure 6.Correlation between ΔD and Δf of the different surfaces from Figure 5. The ΔD/Δf values can be taken to compare the viscosity of protein layers adsorbed onto different surfaces because of elimination of the factor time.
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