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Crystal Growth Mechanism in a Solution of Hollow Whiskers of Molecular Compounds

机译:空心化合物晶须溶液中的晶体生长机理

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Hollow and solid whiskers are formed during the solvent exchange from the dimethyl sulfoxide or dirnethylformamide solvates of dexamethasone acetate to the sesquihydrate by immersion of the initial phase in water.Detailed investigations using mainly optical and scanning electron microscopies lead us to propose a growth mechanism of the hollow whiskers.Six criteria appear to be necessary for the formation of thin tubular crystals during the solvent exchange.To reproduce the crystallization occurring at the surface of the initial crystal,an experimental assembly was made with a syringe and a glass filter.When the six conditions are fulfilled,this technique permits the production of 100% of hollow whiskers.
机译:将醋酸地塞米松的二甲基亚砜或二甲基甲酰胺乙酸盐溶剂化为倍半水合物时,通过将初始相浸入水中,可形成空心晶须和固态晶须。主要使用光学和扫描电子显微镜进行的详细研究使我们提出了晶须的生长机理。空心晶须。在溶剂交换过程中形成细管状晶体似乎需要六个标准。为了重现初始晶体表面上发生的结晶,用注射器和玻璃过滤器进行了实验组装。当六个在满足条件的情况下,该技术可以生产100%的空心晶须。

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