采用自发结晶法和籽晶法制备了4-(4-二甲基氨基苯乙烯基)甲基吡啶对甲基苯磺酸盐(DAST)晶体,所得晶体尺寸为10 mm×10mm 1～2 mm.研究了不同生长位置对生长习性和晶体形貌的影响,在溶液中部或顶部生长时DAST晶体倾向于沿a轴方向生长,晶体呈片状;在溶液底部时DAST晶体c轴方向生长加快,晶体呈块状.测试了DAST晶体(001)面X射线衍射摇摆曲线,对比分析了不同生长方法对晶体质量的影响.另外,对所制备的DAST晶体的透过光谱及吸收系数进行了研究.
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