Efficient surface neutralization and enhanced substrate adhesion through ketene mediated crosslinking and functionalization

Hyunjung Jung, Frank A. Leibfarth, Sanghoon Woo, Sumi Lee, Minhyuk Kang, Bongjin Moon, Craig J. Hawker, Joona Bang

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Balancing the interfacial interactions between a polymer and substrate is one of the most commonly employed methods to ensure the vertical orientation of nanodomains in block copolymer lithography. Although a number of technologies have been developed to meet this challenge, there remains a need for a universal solution for surface neutralization that combines simple synthesis, fast processing times, generality toward substrate, low density of film defects, and good surface adhesion. The chemistry of ketenes, which combines highly efficient polymer crosslinking through dimerization and surface adhesion through reaction with the substrate, is shown to be well suited to the challenge. The versatile chemistry of ketenes are accessed through the post-polymerization of Meldrum's acid, which can be easily incorporated into copolymers through controlled radical polymerization processes. Further, the Meldrum's acid monomer is synthesized on a large scale in one step without the need for chromatography. Processing times of seconds, low defect density, simple synthetic procedures, and good substrate adhesion make these materials attractive as robust block copolymer neutralization layers.

Original languageEnglish
Pages (from-to)1597-1602
Number of pages6
JournalAdvanced Functional Materials
Volume23
Issue number12
DOIs
Publication statusPublished - 2013 Mar 25

Fingerprint

crosslinking
Crosslinking
adhesion
Adhesion
ketenes
Substrates
block copolymers
Block copolymers
Polymers
polymerization
vertical orientation
chemistry
acids
Dimerization
Acids
Defect density
defects
polymers
chromatography
Free radical polymerization

Keywords

  • block copolymer lithography
  • ketene mediated crosslinking
  • surface neutralization

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Efficient surface neutralization and enhanced substrate adhesion through ketene mediated crosslinking and functionalization. / Jung, Hyunjung; Leibfarth, Frank A.; Woo, Sanghoon; Lee, Sumi; Kang, Minhyuk; Moon, Bongjin; Hawker, Craig J.; Bang, Joona.

In: Advanced Functional Materials, Vol. 23, No. 12, 25.03.2013, p. 1597-1602.

Research output: Contribution to journalArticle

Jung, Hyunjung ; Leibfarth, Frank A. ; Woo, Sanghoon ; Lee, Sumi ; Kang, Minhyuk ; Moon, Bongjin ; Hawker, Craig J. ; Bang, Joona. / Efficient surface neutralization and enhanced substrate adhesion through ketene mediated crosslinking and functionalization. In: Advanced Functional Materials. 2013 ; Vol. 23, No. 12. pp. 1597-1602.
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