Patent ID: 7845931

Claim:
An imprint lithography mold assembly, comprising: (a) a mold having a surface; (b) a substrate having a surface; and (c) a polymerizable composition disposed between the surface of the mold and the surface of the substrate, wherein at least a portion of the polymerizable composition is in contact with an oxygen-containing atmosphere between the surface of the mold and the surface of the substrate, and wherein the polymerizable composition comprises: (i) a plurality of molecules; (ii) a photoinitiator; and (iii) an oxygen scavenger, wherein the photoinitiator is operable to react with oxygen in the oxygen-containing atmosphere during polymerization of the polymerizable compound to form photoinitiator-peroxide radicals, wherein the oxygen scavenger is operable to react with the photoinitiator-peroxide radicals formed during polymerization of the polymerizable composition to form an oxygen scavenger radical, and wherein the oxygen scavenger radical is operable to facilitate further polymerization and to reduce the formation of photoinitiator-peroxide radicals by reacting with oxygen in the oxygen-containing atmosphere to form additional oxygen scavenger radicals.