Synthesis and characterization of monodispersed polymer/polydiacetylene nanocrystal composite particles

Zhong Wei, Kento Ujiiye-Ishii, Akito Masuhara, Hitoshi Kasai, Shuji Okada, Hideki Matsune, Tsuyoshi Asahi, Hiroshi Masuhara, Hachiro Nakanishi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Monodispersed polymer/polydiacetylene composite particles were synthesized by soap-free seeded emulsion polymerization of styrene and methyl methacrylate; the products were characterized by XRD, SEM, TEM, UV-visible spectroscopy, and single particle scattering spectroscopy. In the synthesis process, polydiacetylene nanocrystals were found to act as inhibitor, and consequently a relatively low concentration was necessary. Different monomers lead to the differences in reaction condition and particle morphology; the PMMA composite particles were simpler in preparation than polystyrene particles, but the latter have better spherical morphology. The composite particles were composed of polymer shells and polydiacetylene cores, which kept their crystal structure and optical properties. A high percentage of cored particles could be achieved with optimized reaction conditions where the amount of seed was sufficient and the oily oligomer by-product was suppressed.

Original languageEnglish
Pages (from-to)937-944
Number of pages8
JournalJournal of Nanoscience and Nanotechnology
Issue number6
StatePublished - 28 Nov 2005


  • Core-Shell
  • Crystal
  • Emulsion Polymerization
  • Monodispersed
  • Nanocrystal
  • Optical Nonlinearity
  • Photonic
  • Polydiacetylene
  • Polystyrene

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