The effect of pressure on Raman scattering cross section of canthaxanthin

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• 作者：Guannan Qu^a ; ^b ; Shuo Li^b ; Yongling Wu^b ; Shang Sun^b ; Xiaoning Shan^b ; Chenglin Sun^b ; Tianyuan Liu^b ; Litong Jiang^c ; Zhiwei Men^a ; ^b ; ^{zwmen@jlu.edu.cn} ; Zuowei Li^b
• 关键词：Raman scattering cross-section ; Steric hindrance ; Phase transition
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2013
• 出版时间：July, 2013
• 年：2013
• 卷：124
• 期：13
• 页码：1547-1549
• 全文大小：450 K

文摘

We measured the Raman spectra of canthaxanthin which contains 9 CC conjugated double bonds in nonpolar solvent carbon disulfide under different pressures. The results showed that the Raman scattering cross section (RSCS) for CC and CC stretching vibration bands of canthaxanthin first increase and then decrease with the increase of pressure. We assume that the main mechanism of the RSCS values increasing can be attributed to the effect of steric hindrance. And the liquid-solid phase transition of carbon disulfide is occurred under the 0.5312 GPa, which lead to the decrease of RSCS values.