Chin. Phys. B ›› 2012, Vol. 21 ›› Issue (12): 127802-127802.doi: 10.1088/1674-1056/21/12/127802

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Difference in effect of temperature on absorption and Raman spectra between all-trans-β-carotene and all-trans-retinol

曲冠男a b, 李硕a, 孙成林a, 刘天元a, 吴咏玲a, 孙尚a, 单肖宁a, 门志伟a b, 陈伟c, 里佐威a, 高淑琴a   

  1. a College of Physics, Jilin University, Changchun 130012, China;
    b State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China;
    c The Third Hospital, Jinlin University, Changchun 130021, China
  • 收稿日期:2012-03-01 修回日期:2012-06-25 出版日期:2012-11-01 发布日期:2012-11-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10974067 and 11104106), Science and Technology Planning Project of Jilin Province, China (Grant Nos. 20090534, 20101508, 201101037, and 201115033), and China Postdoctoral Science and Technology Foundation (Grant Nos. 20100481062 and 2012T50284).

Difference in effect of temperature on absorption and Raman spectra between all-trans-β-carotene and all-trans-retinol

Qu Guan-Nan (曲冠男)a b, Li Shuo (李硕)a, Sun Cheng-Lin (孙成林)a, Liu Tian-Yuan (刘天元)a, Wu Yong-Ling (吴咏玲)a, Sun Shang (孙尚)a, Shan Xiao-Ning (单肖宁)a, Men Zhi-Wei (门志伟)a b, Chen Wei (陈伟)c, Li Zuo-Wei (里佐威)a, Gao Shu-Qin (高淑琴)a   

  1. a College of Physics, Jilin University, Changchun 130012, China;
    b State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China;
    c The Third Hospital, Jinlin University, Changchun 130021, China
  • Received:2012-03-01 Revised:2012-06-25 Online:2012-11-01 Published:2012-11-01
  • Contact: Men Zhi-Wei, Chen Wei E-mail:zwmen@jlu.edu.cn;chenwei1999@gmail.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10974067 and 11104106), Science and Technology Planning Project of Jilin Province, China (Grant Nos. 20090534, 20101508, 201101037, and 201115033), and China Postdoctoral Science and Technology Foundation (Grant Nos. 20100481062 and 2012T50284).

摘要: Temperature dependences (81 °C-18 °C) of visible absorption and Raman spectra of all-trans-β -carotene and all-trans-retinol extremely diluted in dimethyl sulfoxide are investigated in order to clarify temperature effects on different polyenes. Their absorption spectra are identified to be redshifted with temperature decreasing. Moreover, all-trans-β -carotene is more sensitive to temperature due to the presence of a longer length of conjugated system. The characteristic energy responsible for the conformational changes in all-trans-β -carotene is smaller than that in all-trans-retinol. Both of the Raman scattering cross sections increase with temperature decreasing. The results are explained with electron-phonon coupling theory and coherent weakly damped electron-lattice vibrations model.

关键词: all-trans-β -carotene, all-trans-retinol, redshift, Raman scattering cross section

Abstract: Temperature dependences (81 °C-18 °C) of visible absorption and Raman spectra of all-trans-β -carotene and all-trans-retinol extremely diluted in dimethyl sulfoxide are investigated in order to clarify temperature effects on different polyenes. Their absorption spectra are identified to be redshifted with temperature decreasing. Moreover, all-trans-β -carotene is more sensitive to temperature due to the presence of a longer length of conjugated system. The characteristic energy responsible for the conformational changes in all-trans-β -carotene is smaller than that in all-trans-retinol. Both of the Raman scattering cross sections increase with temperature decreasing. The results are explained with electron-phonon coupling theory and coherent weakly damped electron-lattice vibrations model.

Key words: all-trans-β -carotene, all-trans-retinol, redshift, Raman scattering cross section

中图分类号:  (Infrared and Raman spectra)

  • 78.30.-j
78.40.-q (Absorption and reflection spectra: visible and ultraviolet)