Journal
SOFT MATTER
Volume 4, Issue 11, Pages 2164-2167Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b807328g
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Funding
- NIH AREA [GM066279]
- American Chemical Society [PRF# 43469-AC7]
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A simple method for creating self-assembled nanostructures using a single polymer system is reported. When spin-coated polystyrene thin films were irradiated with UV light and treated with toluene, unique nanostructures were observed, evolving from star-shaped networks to arrays of concentric circles. The nanostructure formation is a result of differential responses of crosslinked and oxidized products to the solvent by a combined effect of phase separation and solvent swelling. The nanostructures were observed for polymers of different molecular weights, films of different thicknesses, and on various substrates.
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