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. 2013 Aug 22;52(41):10766–10770. doi: 10.1002/anie.201304922

Figure 3.

Figure 3

Biological applications of PG and TA coatings. A) Viability of 3T3 fibroblast cells upon contact with unmodified polystyrene (red) and TA-modified polystyrene (blue), and of P. aeruginosa and S. aureus cells in contact with unmodified PC (red) and TA-modified PC (blue). B) 24 h attachment of 3T3 fibroblasts on TiO2, PG-modified TiO2, and mPEG-SH or mPEG-NH2 grafted PG-modified TiO2. C) 24 h attachment of P. aeruginosa (orange) and S. aureus (green) on PC, PG-modified PC, and on mPEG-SH grafted PG-modified PC. D) Antioxidant performance of PG- and TA-coated fumed silica nanoparticles, as measured by β-carotene degradation assay. A decrease in absorbance is indicative of oxidation. E) Intracellular ROS production of 3T3 fibroblasts adhered to bare and polyphenol-modified polystyrene. *: p<0.05, **: p<0.01, ***: p<0.001.