Substrate‐Independent and Re‐Writable Surface Patterning by Combining Polydopamine Coatings, Silanization, and Thiol‐Ene Reaction

Abstract Polydopamine coating is a unique, simple, and substrate‐independent surface functionalization strategy. Techniques for secondary functionalization, patterning, re‐functionalization of polydopamine modified materials are important to broaden the scope applications such in variety fields. Here, facile strategy patterning presented. This approach combines advantages three methods: coating, versatile gas phase silanization, rapid thiol‐ene photoclick reaction patterning. They demonstrate equally efficient diverse materials, as glass, polytetrafluoroethylene, aluminum, polypropylene, or polyethylene. also show possibility controlled chemical removal patterns by treatment with tetrabutylammonium fluoride, which allows re‐modification re‐patterning substrate. Thus, this universal powerful substrate independent modification can significantly facilitate development novel functional devices useful various applications.