Figure 3. (A, Movie S1) Coated and uncoated sections of a wall that are exposed to dyed water. (B, Movie S2) The oil-based ink traces on the coated section of the wall readily contracted and they could be easily wiped away with dry tissues. (C, Movie S3) 3M tape readily fell from the coated section of the wall by the action of its own weight, while strongly adhering to the uncoated section of the wall.
Finally, in order to evaluate the on-site use of the coating on large-area substrates, we applied our coatings on different building walls (lime and ceramic tile walls) and exposed them to splashes of water, graffiti, and adhesive tapes. As anticipated, outstanding self-cleaning and anti-graffiti performance was achieved, and the tapes could be readily removed from the coated walls (Fig. 3A-C, Movies Si-S3).