用高压拉曼光谱方法研究β-胡萝卜素相变  

Study of Phase Transition of β-Carotene by High Pressure Raman Spectroscopy

作　　者：里城祺 尚玉婕 孙琳 高淑琴[2] 周密[2] 孙成林[2] LI Cheng-qi;SHANG Yu-jie;SUN Lin;GAO Shu-qin;ZHOU Mi;SUN Cheng-lin(Changchun Jida Middle School Experimental School,Changchun 130021,China;College of Physics,Jilin University,Changchun 130012,China)

机构地区：[1]长春吉大附中实验学校,吉林长春130021 [2]吉林大学物理学院,吉林长春130012

出　　处：《红外》2018年第11期34-38,共5页Infrared

基　　金：国家自然科学基金(11374123)

摘　　要：为了探究β-胡萝卜素在高压下是否会发生相变,进行了0～30Gpa压强范围内β-胡萝卜素的高压拉曼光谱实验。通过评估不同压强范围内拉曼光谱频移-压强的线性函数变化来判断β-胡萝卜素是否发生相变。研究表明,当压强升至约为7Gpa以及14Gpa时,β-胡萝卜素分子的频移-压强线性函数方程发生了变化,即发生了相变。通过分析频移-压强函数线性关系是否发生变化来判断相变,是简捷、方便的技术方法。关于纯β-胡萝卜素压力相变的研究,暂未检索到相关报道。To investigate whether β-carotene has a phase change under high pressure, high pressure Raman spectroscopy of β-carotene in the range of 0 to 30 Gpa pressure was performed. By evaluating the linear function change of Raman spectral frequency-pressure in different pressure ranges, whether or not a phase transition occurs can be determined. The study shows that when the pressure rises to about 7 Gpa and 14 Gpa, the frequency-pressure linear function equation of β-carotene molecules changes, which means that the phase transition occurs. To analyze whether the frequency-pressure linear relationship is changed is a simple and convenient technical method for judging whether the phase shift is changed. The study of stress phase transition of neat β-carotene has not been reported.

关 键 词：Β-胡萝卜素 共振拉曼光谱 高压 相变 

分 类 号：TB942[一般工业技术—计量学]