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Highly Oriented and Ordered Arrays from Block Copolymers via Solvent Evaporation
Author(s) -
Kim S. H.,
Misner M. J.,
Xu T.,
Kimura M.,
Russell T. P.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200304906
Subject(s) - materials science , copolymer , evaporation , solvent , chemical engineering , thin film , self assembly , block (permutation group theory) , range (aeronautics) , nanotechnology , composite material , organic chemistry , polymer , thermodynamics , geometry , chemistry , physics , mathematics , engineering
A simple process of solvent evaporation is shown to produce highly ordered arrays of cylindrical microdomains in block copolymers with long‐range lateral order (see Figure). Solvent evaporation in thin films is unidirectional, producing a self‐assembly directed normal to the film surface, akin to a zone refinement. Further control over the size and separation distance of the domains can be achieved with cosolvents.