Dispersion control of perylene fluorophores in a polystyrene microsphere

Koshiro Yoshioka, Tsunenobu Onodera, Hitoshi Kasai, Shuji Okada, Hidetoshi Oikawa

Research output: Contribution to journalArticlepeer-review


Polystyrene (PS) microspheres embedding perylene fluorophores have been fabricated by the two kinds of encapsulation method; (A) seed polymerization of styrene using perylene nanocrystals as a seed, and (B) emulsion polymerization of perylene-styrene solution. In both methods, the PS microspheres formed were ca. 200nm in size, roughly larger than bare perylene nanocrystals. Interestingly, the fluorescence peak positions in both the PS microspheres were located between those of solution and nanocrystal states. These facts suggest that the dispersion state of perylene fluorophores in PS microspheres would be changed to be intermediate between solution and nanocrystal states during the polymerization process.

Original languageEnglish
Pages (from-to)239-242
Number of pages4
JournalMolecular crystals and liquid crystals
Issue number1
Publication statusPublished - 2016 Apr 12


  • Organic nanocrystals
  • encapsulation
  • perylene
  • polymer microspheres
  • reprecipitation

ASJC Scopus subject areas

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

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