Effect of solvent on organic nanocrystal growth using the reprecipitation method

Hae Ryong Chung, Eunsang Kwon, Hidetoshi Oikawa, Hitoshi Kasai, Hachiro Nakanishi

研究成果: Article査読

63 被引用数 (Scopus)


We have fabricated organic nanocrystals of low-molecular-weight aromatic compounds such as perylene and anthracene using the so-called reprecipitation method, in which a dilute solution of the compound prepared by water-soluble solvent, i.e., good solvent, is injected into vigorously stirred water as a poor medium. The resulting nanocrystals are dispersed stably in water. It was found that the average size of perylene nanocrystals formed, as evaluated by dynamic light scattering technique, decreased as the dielectric constant of the good solvent increased, while the size of the anthracene nanocrystals increased with increasing dielectric constant due to association in the aqueous dispersion liquid. The influence of solvent polarity and solubility on the nanocrystallization process in the reprecipitation method is discussed in detail.

ジャーナルJournal of Crystal Growth
出版ステータスPublished - 2006 9 4

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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