Single crystal preparation of DAST for terahertz-wave generation

Yoshihiro Mineno, Takeshi Matsukawa, Satoshi Ikeda, Tetsuo Taniuchi, Hachiro Nakanishi, Shuji Okada, Hiroaki Adachi, Masashi Yoshimura, Yusuke Mori, Takatomo Sasaki

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


DAST (1-methyl-4-{2-[4-(dimethylamino)phenyl]ethenyl}pyridinium p-toluenesulfonate) is a promising crystalline material for electro-optic applications and THz-wave generation. DAST powder for crystal growth was prepared by two synthesis routes including the conventional one and we confirmed that purity of DAST powder became indistinguishable after proper recrystallization even using conventional synthesis process. The highest solubility of DAST was found for methanol-acetonitrile mixture, and DAST crystal growth in this mixture or methanol-ethanol mixture gave thicker crystals than those grown in methanol. Thus, morphological control of DAST single crystals was found to be possible by varying solvents.

Original languageEnglish
Pages (from-to)55/[337]-61/[343]
JournalMolecular crystals and liquid crystals
Issue number1
Publication statusPublished - 2006 Feb


  • Crystal growth
  • DAST
  • Ionic dye
  • Organic crystal
  • Second-order nonlinear optics
  • THz-wave generation

ASJC Scopus subject areas

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


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