Water-Stable Diblock Polystyrene-<i>block</i>-poly(2-vinyl pyridine) and Diblock Polystyrene-<i>block</i>-poly(methyl methacrylate) Cylindrical Patterned Surfaces Inhibit Settlement of Zoospores of the Green Alga Ulva

Grozea, Claudia M.; Gunari, Nikhil; Finlay, John A.; Grozea, D.; Callow, Maureen E.; Callow, James A.; Lu, Zheng‐Hong; Walker, Gilbert C.

doi:10.1021/bm900065b

Cited by 38 publications

(48 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Few publications have investigated the effect of water on chemical structures of block copolymer films using surface sensitive spectroscopic techniques. 2,3,7,15,16 We are interested in the near-surface molecular organization, and reorganization upon immersion in water, of comb-like block copolymers with PEGylated fluoroalkyl side chains (cf. Figure 1).…”

Section: Introductionmentioning

confidence: 99%

NEXAFS Depth Profiling of Surface Segregation in Block Copolymer Thin Films

et al. 2010

View full text Add to dashboard Cite

NEXAFS spectroscopy was used to probe the surface composition and under-water surface reconstruction of thin films of comb-like diblock copolymers with cylindrical and spherical microphases. The polymers consisted of a polystyrene block, and a second block prepared from a styrenic monomer grafted with fluoroalkyl-tagged poly(ethylene glycol) side chains. Compositional depth profiling of the microphase separated block copolymer films, in the top 1-3 nm of the film, was performed to understand the role of block copolymer microstructure and self-assembly on surface composition. Using experimentally determined concentration profiles, the surface concentration of phenyl ring carbon atoms was quantified and compared with those of homopolymer and random copolymer controls. The carbon atoms from the relatively high surface energy phenyl groups were depleted or excluded from the surface, in favor of the low surface-energy fluoroalkyl groups. While it is expected that block copolymer surfaces will be completely covered by a wetting lamellar layer of the lower surface energy block, a significant amount of the higher surface energy polystyrene block was found to be present in the surface region of the cylinderforming block copolymer. Evidently, the spontaneous formation of the cylindrical polystyrene microdomains in the near-surface region compensated for the lowering of the free energy that could have been achieved by completely covering the surfaces with a lamellar layer of the lower surface energy fluorinated block. All surfaces underwent molecular reconstruction after immersion in water. The experimental concentration depth profiles indicated an increased surface depletion of phenyl ring carbon atoms in the water-immersed thin films, due to the tendency of hydrophilic PEG side groups to be present at the polymer-water interface. Such a detailed characterization of the outermost layers of the block copolymer surfaces was possible because of the exceptional depth resolution of the NEXAFS depth profiling technique.

show abstract

Section: Introductionmentioning

confidence: 99%

NEXAFS Depth Profiling of Surface Segregation in Block Copolymer Thin Films

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Different annealing conditions of PS-b -P2VP nanospheres were used before HAuCl 4 soaking. [ 24,32,[38][39][40][41][42] Solvent properties, [ 24 ] temperature, [ 41 ] and annealing time, [ 32 ] as well as the solvent removal speed, [ 42 ] may infl uence the fi nal morphologies of BCP nanostructures. A drop of clean swollen nanosphere suspension was dropped on a copper grid and blow-dried for TEM characterization.…”

Section: Methodsmentioning

confidence: 99%

The Influences of Cooperative Swelling and Coordination on Patterned Decoration of Gold on Block Copolymer Nanospheres

Wang

Mei

Jin

2013

Macro Chemistry & Physics

View full text Add to dashboard Cite

Ordered nanoring arrays are a new pattern of block copolymer thin fi lms generated by spincoating of block copolymer reverse micelles on silicon substrates, which can further direct the formation of gold nanoring arrays on block copolymer thin fi lms. Here, it is reported that the cooperation of swelling and coordination can infl uence the surface pattern of the block copolymer nanospheres. A hexagonally arranged dot pattern can be transformed into a ring pattern on polystyrene-blockpoly(2-vinylpyridine) nanospheres, and the new pattern can further direct the decoration of gold nanoparticles by balancing the swelling of the poly(2-vinylpyridine) chains and the coordination effect between gold ions and the pyridine units.

show abstract

“…Therefore, the differences in settlement and adhesion behavior have inspired the development of a surface that presents both hydrophilic and hydrophobic domains to settling (attaching) cells and organisms. Different patterns of such surfaces have also been evaluated [127,128].…”

Section: Antifouling By Modification Of Surface Topography and Hydropmentioning

confidence: 99%