Journal
ACS NANO
Volume 8, Issue 11, Pages 11745-11752Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn505234v
Keywords
self-assembly; block copolymers; nanopores; ultrafiltration; membranes
Categories
Funding
- U.S. Department of Energy BES [BES-DE-FG02-96ER45612]
- Innovaprep
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05ch11231]
- NRF [2014R1A2A2A01004364, 2014M3C1A3053035]
- APCPI ERC - Ministry of Education, Science & Technology (MEST), Korea [R11-2007-050-00000]
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Nanoporous structures were obtained by the self-assembly of polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) block copolymers (BCP) where, in thick films, cylindrical microdomains were oriented normal to the substrate and air interfaces, and in the interior of the films, the microdomains were randomly oriented. Continuous nanopores that penetrated through the film were readily produced by a simple preferential swelling of the PMMA microdomains. The confined swelling and rapid contraction of PMMA microdomains generated well-defined uniform pores with diameters to 17.5 nm. The size selectivity and rejection of Au nanoparticles (NPs) for these ultrafiltration (UF) membranes were demonstrated, suggesting an efficient route to tunable, noncomponent-degradative UF membranes.
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