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Author

Park, Soojin
Nano-Functional Materials Lab
Research Interests
  • Block Copolymers, nanostructured materials for Lithium-Ion batteries, wearable and stretchable energy storage applications

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Fabrication of Nanoporous Block Copolymer Thin Films through Mediation of Interfacial Interactions with UV Cross-Linked Polystyrene

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Title
Fabrication of Nanoporous Block Copolymer Thin Films through Mediation of Interfacial Interactions with UV Cross-Linked Polystyrene
Author
Chen, WeiPark, SoojinWang, Jia-YuRussell, Thomas P.
Keywords
Block copolymer thin films; Brominated polystyrene; Catalyzed coupling; Copolymer thin films; Cross-linked polystyrene; Interfacial interaction; Lateral ordering; Mass densities; Micro-domains; Nano-porous; Nanoporous thin films; Perpendicular orientation; PMMA thin film; Solvent annealing; Two-component
Issue Date
200909
Publisher
AMER CHEMICAL SOC
Citation
MACROMOLECULES, v.42, no.18, pp.7213 - 7216
Abstract
The fabrication of nanoporous thin films of brominated polystyrene-block- poly(methyl methacrylate) (PBrS-b-PMMA) copolymers by using UV cross-linked PS matte for mediating preferential interfacial interactions to achieve the perpendicular orientation of the microdomains has been reported. Molecular weights and PDI were characterized by gel permeation chromatography (GPC), and the compositions of copolymers were determined by H nuclear magnetic resonance (NMR) with mass densities of two components. Combining mediation of interfacial interactions and solvent annealing produced the nanoporous PBrS-b-PMMA thin film with perpendicular orientation and a high degree of lateral ordering. A particularly attractive feature of PBrS-b-PMMA copolymers is that active Br atoms provide an easy way to functionalize PBrS-b-PMMA copolymer thin films through palladium- catalyzed coupling reactions.
URI
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DOI
http://dx.doi.org/10.1021/ma9011413
ISSN
0024-9297
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