DAST源粉表征与晶体制备

Characterization of DAST Powder and Preparation of Its Crystals

通过X射线粉末衍射、核磁共振波谱法对制得的DAST源粉进行表征,确证其分子结构并计算出源粉纯度为99.7%。然后使用该DAST源粉配制其甲醇溶液,并利用溶液降温法通过自发成核过程培养出尺寸为(2~3)mm×(2~3)mm×(0.3~0.5)mm的DAST晶体。

DAST powder prepared was characterized via X-ray powder diffraction and nuclear magnetic resonance spectrum methods. Its molecular structure was corroborated and purity of the powder calculated was 99.7 %. Then the DAST powder was used to prepare its methanol solution, and DAST crystals with size of(2~3) mm×(2~3) mm×(0.3~0.5) mm was cultivated through spontaneous nucleation process via solution temperature-reduction method.