Patterning of polypyrrole using a fluoropolymer as an adsorption-protecting molecule

Sunil Kwon, Jong Wook Ha, Jiwhan Noh, Sangyup Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Patterning of the conducting polymer polypyrrole (PPy) was achieved using perfluoropolyether (PFPE) as a mask material. The fluoropolymer PFPE has both hydrophobic and oleophobic properties that allowed the generation of passivated patterns against PPy deposition. We exploited these properties to achieve the selective micropattern deposition of PPy, by simple chemical oxidation in an aqueous solution. Using a microcontact printing method, circle patterns with exposed carboxyl groups were prepared, while other region was protected by PFPE. Chemical oxidation of PPy on the patterned substrate resulted in selective deposition of PPy onto only the carboxylate-terminated regions, with little deposition on the PFPE layer. Cross-sectional analysis of the pattern revealed that the PFPE layer would form a hole-like structure around the carboxylate-terminated surfaces, with PPy deposition only in the holes. The PFPE layer had little influence on surface smoothness, compared to other self-assembled monolayers. These results suggest that PFPE can be used as a protective material for the surface modification and patterning of various materials.

Original languageEnglish
Pages (from-to)165-171
Number of pages7
JournalApplied Surface Science
Volume257
Issue number1
DOIs
Publication statusPublished - 2010 Oct 15

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films

Cite this