Methods of making crosslinked copolymer films from inimer-containing random copolymers

A method of making a crosslinked copolymer film, the method comprising:

• forming a random copolymer by polymerizing a first monomer comprising an alkyl halide functional group that is capable of acting as an ATRP initiator and a second monomer comprising a crosslinkable functional group, wherein the random copolymer comprises pendant alkyl halide functional groups and pendant crosslinkable groups;
• subsequently depositing the polymerized random copolymer as a film on a substrate surface;
• and
• subsequently crosslinking the crosslinkable functional groups of the deposited random copolymer, such that crosslinks are formed between chains of the random copolymer in the film;
• wherein the film comprising the crosslinked random copolymer is not covalently bonded to the substrate surface.