Water-stable diblock polystyrene-block-poly(2-vinyl pyridine) and diblock polystyrene-block-poly(methyl methacrylate) cylindrical patterned surfaces inhibit settlement of zoospores of the green alga Ulva.
Nanopatterned surfaces with hydrophobic and hydrophilic domains were produced using the diblock copolymer polystyrene-block-poly(2-vinyl pyridine) (PS-b-P2VP) and polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA). The PS-b-P2VP diblock copolymer, mixed with the cross-linker benzophenone and spin-coated onto silicon wafers, showed self-assembled cylindrical structures, which were retained after UV treatment for cross-linking. The thin films displayed cylindrical domains after immersion in water. This study shows that pattern retention in water is possible for a long period of time, at least for two weeks in pure water and three weeks in artificial seawater. The PS-b-PMMA diblock showed self-assembled cylindrical structures. PS-b-P2VP and PS-b-PMMA cylindrical patterned surfaces showed reduced settlement of zoospores of the green alga Ulva compared to unpatterned surfaces. The copolymers were investigated using atomic force microscopy and X-ray photoelectron spectroscopy.
Grozea
Claudia M
CM
Department of Chemistry, University of Toronto, Toronto M5S 3H6, Canada.
Gunari
Nikhil
N
Finlay
John A
JA
Grozea
Daniel
D
Callow
Maureen E
ME
Callow
James A
JA
Lu
Zheng-Hong
ZH
Walker
Gilbert C
GC
D002448:Cell Adhesion; D002465:Cell Movement; D008689:Methacrylates / Q000737:chemistry* / Q000378:metabolism*; D018625:Microscopy, Atomic Force; D036103:Nanotechnology; D011137:Polystyrenes / Q000737:chemistry* / Q000378:metabolism*; D011145:Polyvinyls / Q000737:chemistry* / Q000378:metabolism*; D013170:Spores / Q000378:metabolism*; D013499:Surface Properties; D044445:Ulva / Q000378:metabolism*; D014867:Water / Q000737:chemistry*; D014965:X-Rays
D008689:Methacrylates; D011137:Polystyrenes; D011145:Polyvinyls; C521881:poly(styrene)-block-poly(2-vinylpyrindine) diblock copolymer; C522509:polystyrene-block-poly(methyl methacrylate); D014867:Water