Ultraviolet Light-Induced Surface-Initiated Atom-Transfer\nRadical Polymerization

Abstract

UV light-induced surface-initiated\natom-transfer radical polymerization\n(ATRP) was reported. This method uses TiO₂ nanoparticles\nas photoactive materials to reduce Cu­(II)/L to a Cu­(I)/L complex under\nUV irradiation by a one-electron transfer process for ATRP with multiple\nusage of monomer solutions. The growth of polymer brushes can be manipulated\nby either varying the content of photoactive materials or regulating\nthe irradiation intensity, thereby yielding polymer brushes with controllable\nthickness, composition, and architecture.