Controlled Nanopores in Thin Films of Nonstoichiometrically Supramolecularly Assembled Graft Copolymers

Suk Man Cho, Giyoung Song, Sun Kak Hwang, Richard Hahnkee Kim, Jinseong Lee, Seunggun Yu, June Huh, Hui Joon Park, Cheolmin Park

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5 Citations (Scopus)

Abstract

Herein, nanometer-scale morphologies of graft-copolymer-like supramolecular thin films, composed of sulfonic acid terminated polystyrene (SPS) and poly(2-vinylpyridine) (P2VP), and their application to antireflection coatings were investigated. The intermolecular complexes of SPS and P2VP, formed through nonstoichiometric multiple hydrogen bonding between the sulfonic acid group of SPS and the nitrogen atom in pyridine unit of P2VP, occurring in film deposition allowed for the formation of spherical micelles (with SPS and P2VP as the corona and core, respectively) in the thin film. Interestingly, the domain size of the micelles was tunable from approximately 20 to 90 nm on average by controlling either the blend ratio of components or the concentration of polymer solution. Furthermore, nanoporous thin films could be easily prepared by removing the core of micelle-based nanostructures by using a simple solvent etching process, leaving sulfonic acid groups on the surface of nanopores, which can be utilized as potential functional sites. Those resultant nanoporous thin films were conveniently employed as an antireflection layer on a glass substrate, giving a maximum 97.8 % transmittance in the visible wavelength range.

Original languageEnglish
Pages (from-to)18375-18382
Number of pages8
JournalChemistry - A European Journal
Volume21
Issue number50
DOIs
Publication statusPublished - 2015 Dec 7

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Keywords

  • micelles
  • nanostructures
  • polymers
  • supramolecular chemistry
  • thin films

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Cho, S. M., Song, G., Hwang, S. K., Kim, R. H., Lee, J., Yu, S., Huh, J., Park, H. J., & Park, C. (2015). Controlled Nanopores in Thin Films of Nonstoichiometrically Supramolecularly Assembled Graft Copolymers. Chemistry - A European Journal, 21(50), 18375-18382. https://doi.org/10.1002/chem.201502866