A study on crystal growth and properties of high quality DAST (고품질 DAST 결정성장과 특성에 관한 연구)

윤선웅; YON SEOG JOO (연석주); 김종흠

A study on crystal growth and properties of high quality DAST

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2004, 14(1), pp.12-16
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

윤선웅 ¹, YON SEOG JOO ¹, 김종흠 ¹

¹동신대학교

Accredited

ABSTRACT

Abstract In this study, we have investigated the development of the crystal growth stability and reproducibility for large and high-quality DAST. DAST crystal were grown from a saturated methanol solution by a slow cooling method and DAST was synthesized by the condensation of 4-methyl-n-methyl pyridinum tosylate, which was prepared from 4-pocoline and methyl toluenesulponate and 4-N-dimethyl amino-bezaldehyde in the presence of piperidine. We had synthesized DAST crystals in dry Argon atmosphere in order to avoid the formation of hydride organge co-crystals, DAST·H2O. Since DAST molecules crystallize in a humid atmosphere, crystal structure become centrosymmetric, and then second order NLO (nonlinear optical) properties would be disappeared. We fixed the growth orientation of DAST crystal (001) surface. The crystal growth was proceeded at a cooling rate of 1oC/day and the cooling period is for 4 days. The dimensions of seed crystal was 2.5×3.6×0.4 mm3 and we have obtained a DAST crystal with the dimension of 10×10.5×3.0 mm3. The color of grown DAST crystal is red and it’s surface appears to be metallic green.

KEYWORDS

DAST, Organic single crystal, Non-liner optical property, XRD rocking curve

Citation status

* References for papers published after 2023 are currently being built.

[journal] / 1995 / Materials for all-optical devices 34 : 189~

[journal] / 1987 / ？Research on nonliner optical meterials an assessement : 211~

[journal] / 1990 / Springeries in Electronics and Potonics 30 / [ 3 ]N. Peyghambarian and S.W. Koch ？Semiconductor nonlinear materials : 7~

[journal] / 1983 / ？Nonlinear Optical Properties of Organic and Polymeric Materials : 57~

[journal] / 1995 / ？Studies on the growth of organic single crystals of urea and THAMP 223 : 223~

[journal] / 1999 / Or- ganic nonlinear optical DAST growth^it？s device application 245 : 359~

[journal] / 1999 / Growth of high quality nonliner optical crystal 4-dimethylamino-N-metyl-4-stilbazoliumtosylate(DAST) : 198~199

[journal] / 1992 / ？Growth of KDP single crystal in aqueous solution : 37~

KJCKorea
Journal Central

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19