Patent ID: 7670749

Claim:
A method for the formation of a patterned resist layer on a substrate surface by patternwise irradiation with actinic radiation comprising the steps of: (i) forming a coating layer comprising a substituted triphenylene compound having a diameter of between 1 and 3 nm, a sensitizer which increases the sensitivity of the exposed layer to the actinic radiation of step (ii) and a cross-linker on the substrate surface, (ii) irradiating the coating layer patternwise, and (iii) removing unirradiated areas of the coating layer, wherein the triphenylene derivative is represented by the formula, in which each of R 1 to R 12 is independently selected from H, hydroxyl, and a monovalent organic group, save that at least one of R 1 to R 4 and at least one of R 5 to R 8 and at least one of R 9 to R 12 is not H.