| 用高压拉曼光谱方法研究β-胡萝卜素相变 |
| 投稿时间：2018-09-21 修订日期：2018-10-08 点此下载全文 |
| 引用本文：里城祺,尚玉婕,孙琳,高淑琴,周密,孙成林.用高压拉曼光谱方法研究β-胡萝卜素相变[J].红外,2018,39(11):34~38 |
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| 基金项目:国家自然科学基金（11374123） |
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| 中文摘要:为了探究β-胡萝卜素在高压下是否会发生相变，进行了0～30 Gpa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7 Gpa以及14 Gpa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。 |
| 中文关键词:β-胡萝卜素 共振拉曼光谱 高压 相变 |
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| Study of Phase Transition of β-Carotene by High Pressure Raman Spectroscopy |
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| Abstract: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. |
| keywords:β-carotene resonance raman spectroscopy high pressure phase transition |
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