title: A simple route to highly oriented and ordered nanoporous block copolymer templates.
abstract: Controlling the orientation and lateral ordering of the block copolymer microdomains is essential to their use as templates and scaffolds for the fabrication of nanostructured materials. In addition, a process must be robust, simple to implement, and rapid, and should not introduce disruptive processing steps that would impede their use. Here, we describe thin films of poly(styrene-b-4-vinylpyridine) (PS-b-P4VP) diblock copolymers, spin-coated from mixed solvents that show highly oriented, cylindrical microdomains with a high degree of order on a wide range of substrates, including silicon oxide, polystyrene, germanium, polyimide, and poly(butylene terephthalate). In addition, the preferential solvation of the P4VP block with an alcohol caused a surface reconstruction that resulted in the formation of a nanoporous film upon drying. The evaporation of gold onto the reconstructed films produced thermally stable and reactive ion etching resistant films.
authors.affiliation: Department of Polymer Science and Engineering, University of Massachusetts, Amherst 01003, USA.
authors.forename: Soojin
authors.initials: S
authors.lastname: Park
authors.forename: Jia-Yu
authors.initials: JY
authors.lastname: Wang
authors.forename: Bokyung
authors.initials: B
authors.lastname: Kim
authors.forename: Ji
authors.initials: J
authors.lastname: Xu
authors.forename: Thomas P
authors.initials: TP
authors.lastname: Russell
mesh_terms: D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008567:Membranes, Artificial; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D011137:Polystyrenes / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D016062:Porosity; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D008567:Membranes, Artificial; D011137:Polystyrenes; D011145:Polyvinyls; C521882:poly(styrene)-block-poly(4-vinylpyrindine) diblock copolymer