反式二苯乙烯(TSB)的溶液法晶体生长

Crystal Growth of Trans-stilbene by Solution Cooling Method

本文观测了TSB在苯甲醚等有机溶剂中的结晶习性,测定了相应的溶解度曲线和亚稳区。采用溶液降温法在50~30℃的温度范围内进行晶体生长,获得透明度好的厘米级TSB晶体。通过对所得晶体进行X射线粉末衍射、紫外-近红外透过光谱、吸收光谱和紫外荧光光谱等测试,表明:本实验使用的不同生长溶剂对TSB晶体结构不会产生影响,所得晶体在410~1000 nm波长范围内透过率不低于80%,而在200~360 nm范围内有吸收,在波长为272.8 nm的激发光作用下,得到较强的荧光峰,峰位为386 nm。

The crystalline habit,solubility and metastable zone of trans-stilbene（TSB） in organic solvents had been observed and measured.TSB crystal were grown from the corresponding solutions by temperature reduction technique within 50-30 ℃,and the centimeter-size crystals obtained had high transparency.The measurements of the XRD and the UV-NIR transmission,absorption and UV fluorescence spectra of the crystal show that the alternation of the growth solvents doesn’t lead any effect on the crystal structure property,the transmittance of the crystal is more than 80% in the wavelength range of 410-1000 nm,but there is absorption in the range of 200-360 nm,and a strong fluorescence emission peak appears at 386 nm by the action of exciting light of 272.8 nm on the crystal.