氯酸钠晶体的CD光谱及ORD特性研究

Study on the CD and ORD of the Crystal NaClO_3

用标准水溶液法生长出氯酸钠晶体,并通过切割、抛光,获得了尺寸为10.9mm×8.2mm×4.7mm的透明、规则的氯酸钠晶体。沿六个垂直晶体表面的方向对氯酸钠晶体进行了圆二色性CD光谱及UV光谱的测定,同时采用自制的旋光色散仪对其在上述6个方向的旋光色散特性进行了研究。首次从实验上证实,在紫外区域,氯酸钠晶体在各个方向上均表现出相同的圆二色性;在可见光区域,氯酸钠晶体在各个方向上均表现出相同的旋光色散特性,这一现象与另外一种手性晶体水晶显然是不同的。

Chiral isotropy material should be obtained in order to manufacture chiral optical waveguide. In the present paper, a chiral crystal of NaClO3 was grown from water solution by standard rocking techniques. Crystal incising and optical polishing were done and a transparent 10.9 mm × 8.2 mm × 4.7 mm crystal NaClO3 was obtained. Along the six directions perpendicular to the surface of the crystal NaClO3, its circular dichroism and UV spectra were collected, and at the same time its optical rotatory dispersion was measured by a self-fabricated ORD apparatus. It was approved by our experiment that the CD, UV spectrum and the optical rotatory dispersion of the crystal NaClO3 were isotropic, which is not the same as those of quartz.