Effect of EDTA on Growth of 4-Dimethylamino-N-Methyl-4-Stilbazolium Tosylate Crystals by Slope Nucleation Method
Resource
Japanese Journal of Applied Physics 43 (4A): 1507-1513
Journal
Japanese Journal of Applied Physics
Journal Issue
43
Pages
1507-1513
Date Issued
2004
Date
2004
Author(s)
Abstract
Nucleation experiments (metastable zone width) were carried out for 4-dimethylamino- N -methyl-4-stilbazolium tosylate (DAST) solutions at different saturation temperatures with and without the addition of a chelating agent. Using the results obtained from metastable zone width experiments, the slope nucleation method growth of DAST was performed. It was revealed that the addition of the chelating agent EDTA significantly suppresses spurious nucleation and cluster formation in the DAST solution, so that fewer, but larger, crystals can be easily obtained. With EDTA, the crystals grown also showed better crystallinity, hardness, and transparency in the visible/near-infrared region.
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Type
journal article
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