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Molecular Crystals and Liquid Crystals Volume 463, 2007 - Issue 1
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Nonlinear Optical Materials and Devices

Single Crystal Preparation of DAST for Terahertz-Wave Generation

Yoshihiro Mineno Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Sendai, Japan
,
Takeshi Matsukawa Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Sendai, Japan
,
Satoshi Ikeda Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Sendai, Japan
,
Tetsuo Taniuchi Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Sendai, Japan
,
Hachiro Nakanishi Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira, Sendai, Japan
,
Shuji Okada Department of Polymer Science and Engineering, Faculty of Engineering, Yamagata University, Yonezawa, Yamagata, JapanCorrespondence[email protected]
,
Hiroaki Adachi Department of Electrical Engineering, Osaka University, Suita, Osaka, Japan
,
Masashi Yoshimura Department of Electrical Engineering, Osaka University, Suita, Osaka, Japan
,
Yusuke Mori Department of Electrical Engineering, Osaka University, Suita, Osaka, Japan
&
Takatomo Sasaki Department of Electrical Engineering, Osaka University, Suita, Osaka, Japan
 show all
Pages 55/[337]-61/[343] | Published online: 12 Mar 2007
 
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Abstract

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.

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