Fig. 4.

Controlling protein adsorption with visible light. a Schematic illustration of the conversion of a protein-resistant surface into a protein-adsorptive surface with light. The fluorescent images of the b Ru-MeSC₂H₄-PEG-modified surface, c Ru-MeSC₂H₄-PEG-modified surface after immersion in a solution of fluorescently labeled BSA (0.5 mg mL^–1) for 2 h and washing with an aqueous solution of NaCl (1 mM, pH = 9), and d protein pattern fabricated using the approach in a. Scale bars are 300 µm