Synthesis and self-assembly nanostructures of pyrene-containing amphiphilic fluorinated copolymers and their oxygen sensing application

Yongjoon Im, Yu Gao, Huie Zhu, Shunsuke Yamamoto, Jun Matsui, Tokuji Miyashita, Masaya Mitsuishi

Research output: Contribution to journalArticlepeer-review

Abstract

We synthesized pyrene-containing amphiphilic fluorinated copolymers p(C7F15MAA/PyMMA)s through free radical polymerization. The pyrene composition ratio was readily tuned from 0.6 to 3 mol% with different monomer feeding ratios, designated as p(C7F15MAA/PyMMA0.6) and p(C7F15MAA/PyMMA3). p(C7F15MAA/PyMMA) nanoparticle films were prepared by dropcasting copolymer solutions onto substrates with the mixture of AK-225 and acetic acid. The copolymer nanoparticle film surfaces exhibited superhydrophobic character with a water contact angle of greater than 160° and low surface free energy (< 19 mN m−1). The emission from the p(C7F15MAA/PyMMA0.6) nanoparticle film was dominated with monomeric emission, while that from the p(C7F15MAA/PyMMA3) nanoparticle film showed mainly excimer emission. The dissolved oxygen sensing performance of the nanoparticle films was also investigated in terms of the different emission modes.

Original languageEnglish
Pages (from-to)81-88
Number of pages8
JournalMolecular crystals and liquid crystals
Volume704
Issue number1
DOIs
Publication statusPublished - 2020 Jun 12

Keywords

  • Fluorescence
  • fluorinated polymer
  • pyrene
  • superhydrophobic

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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