Novel semi-crystalline triblock terpolymersof medium and high molecular weight for nanotechnology applications such as nanolithography masks

Novel semi-crystalline diblock copolymers (A-b-B) and triblock terpolymers (A-b-B-b-C) of medium and high number average molecular weight were prepared through the high standards of anionic polymerization. Molecular and compositional homogeneity enable interesting morphological properties and give rise to different topologies with respect to the number average molecular weight and the volume fraction ratio of each sequence. Their morphological study through SAXS/WAXS methods will enlighten both the expected morphologies and their crystallization during heating and cooling procedures. These materials are promising candidates for nanotechnology applications such as nanolithography masks and mololith membranes by selective removal of one of the involved segments.