溶剂折射率对β-胡萝卜素拉曼散射截面的影响  

Effect of solvent refractive index on Raman cross-section of β-carotene

作　　者：李占龙[1] 欧阳顺利[1] 曹彪[1] 周密[1] 里佐威[1] 高淑琴[1] 

机构地区：[1]吉林大学物理学院,长春130023

出　　处：《物理学报》2009年第10期6908-6912,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10774057)资助的课题~~

摘　　要：以环己烷的1444cm-1拉曼线为内标,采用514.5nm激发光分别测量了β-胡萝卜素的CC双键(1520cm-1)和C—C单键(1155cm-1)振动模式下在不同折射率溶剂中的拉曼散射截面,结果表明随溶剂的折射率增加β-胡萝卜素在两种振动模式下拉曼散射截面都增加.利用色散力和共振拉曼理论解释了在不同折射率溶剂中β-胡萝卜素散射截面的差异.The Raman cross-sections of β-carotene CC double bond（1520 cm-1）and C—C single bond（1155 cm-1）vibration mode have been measured using cyclohexane as internal standard.The result shows that the Raman cross-section of β-carotene increases with the increase of refractive indexes of solvents.The difference of β-carotene Raman cross-section in different refractive indexes of solvents was explained by the dispersion and resonance Raman theory.

关 键 词：拉曼散射截面 Β-胡萝卜素 色散力 共振拉曼 

分 类 号：O657.37[理学—分析化学]