Patent ID: 8821978

Claim:
A method of forming a layered structure comprising a domain pattern of a self-assembled material, the method comprising: disposing on a substrate a photoresist layer comprising a non-crosslinking photoresist; optionally baking the photoresist layer; pattern-wise exposing the photoresist layer to first radiation; baking the exposed photoresist layer at a temperature of 170° C. to 200° C. for at least 1 minute; and developing the exposed and baked photoresist layer with a non-alkaline developer to form a negative-tone patterned photoresist layer comprising exposed non-crosslinked developed photoresist; wherein i) the developed photoresist is not soluble in a given organic solvent suitable for casting a given material capable of self-assembly, ii) the given organic solvent is selected from the group consisting of mono-alcohols, glycols, glycol mono ethers, glycol mono ether esters, and combinations thereof and iii) the developed photoresist is soluble in an aqueous alkaline developer and/or a second organic solvent, wherein the non-alkaline developer comprises the given organic solvent; casting a solution comprising the given material capable of self-assembly dissolved in the given organic solvent on the patterned photoresist layer, and removing the given organic solvent; and allowing the casted given material to self-assemble while optionally heating and/or annealing the casted given material, thereby forming the layered structure comprising the domain pattern of the self-assembled given material.