Effect of Complex Formation on Resonance Raman Scattering Cross Section of β-Carotene

Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (6): 1218.

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Effect of Complex Formation on Resonance Raman Scattering Cross Section of β-Carotene

SUN Cheng-Lin^1,2, ZHANG Xue-Ya², LI Zhan-Long², ZHOU Mi², OUYANG Shun-Li², LI Zuo-Wei^2*, GAO Shu-Qin², ZHOU Qiang²

1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130021, China;
2. College of Physics, Jilin University, Changchun 130023, China

Received:2009-09-23 Online:2010-06-10 Published:2010-06-10
Contact: LI Zuo-Wei. E-mail: chenglin@jlu.edu.cn
Supported by:
国家自然科学资金(批准号: 10774057, 10974067)、吉林省科技厅项目(批准号: 20090534)和吉林大学超硬材料国家重点实验室开放课题(批准号: 201008)资助.

Abstract

Abstract:

β-Carotene is the polyenes linear biological molecule, which can form charge transfer complex in iodine solution. We measured the UV-Vis absorption and Raman spectra by the Avaspec-2048-2 spectrophotometer and the micro Raman spectrometer(Renishaw InVia Raman microscope), respectively. The result show that the UV-Vis absorption spectra at 460 nm of β-carotene disappeare in polar solvent 1,2-dichloroethane. And a new, intense absorption band of complex which was formed by β-carotene and iodine was found at 1000 nm. So the resonance Raman spectra of β-carotene in complex couldn′t be observed by 514.5 nm Laser. And Raman cross section of β-caroten that wasn′t in the complex reduced. Due to the solution of β-carotene and iodine was unstable, the molecule structural order of β-caroten weaked, which lead to the weak of coherent weakly damped C-C vibrations, and made the Raman scattering cross section reduced.

Key words: Raman scattering cross section; Complex; β-Carotene

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SUN Cheng-Lin*, ZHANG Xue-Ya, LI Zhan-Long, ZHOU Mi, OUYANG Shun-Li, ..... Effect of Complex Formation on Resonance Raman Scattering Cross Section of β-Carotene[J]. Chem. J. Chinese Universities, 2010, 31(6): 1218.

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Effect of Complex Formation on Resonance Raman Scattering Cross Section of β-Carotene

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