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We have measured the UV-visible absorption and Raman spectra of β-carotene which contains 9 CC conjugated double bond polyenes biological molecules in 9 kinds of solvents.The results showed that the Raman scattering cross-section for C—C and CC stretching vibration bands of β-carotene increases linearly with the increase of solvent density.The mechanism is that β-carotene in high density solvent is less affected by perturbation,has higher structure order, more extended π electron delocalization，and stronger coherent weakly damping C—C bond vibration,which results in a large Raman scattering cross section.Studies on the influence of solvent density to molecular Raman cross section have not been reported.This paper is promising as on experimental hint on theoretical study of light scattering,and provides a reference for research of polyenes chain molecules and the development of optoelectronic devices.
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Keywords:
- Raman scattering cross-section /
- polyenes molecules /
- absorption spectra /
- structured order
[1] ［1］ Zhao X H, Ma F, Wu Y S, Ai X C, Zhang J P 2008 Acta Phys. Sin. 57 289 (in Chinese) ［赵晓辉、马菲、吴义室、艾希成、张建平 2008 57 289］
[2] ［2］Zuo J, Li Z W, Tian Y J, Chen J, Gao S Q, Lu G H 2007 Acta Phys. Sin. 56 890 (in Chinese) ［左剑、里佐威、田艳杰、陈健、高淑琴、陆国会 2007 56 890］
[3] ［3］Mendiara S N, Baquero R P, Katunar M R 2009 Appl. Magn. Reson. 35 549
[4] ［4］Kirsh V A, Hayes R B, Mayne S T 2006 J. Natl. Cancer I. 98 245
[5] ［5］Chu B S, Ichikawa S, Kanafusa S 2007 J. Am. Oil Chem. Soc. 84 1053
[6] ［6］Sugisaki M, Fujiwara M, Nair S V, Ruda H E, Cogdell R J, 2Hashimoto H 2009 Phys. Rev. B 80 035118
[7] ［7］Rumi M, Zerbi G, Mullen K 1997 J. Chem. Phys. 106 24
[8] ［8］Dudik J M, Johnson C R, Asher S A 1985 J. Chem. Phys. 82 1732
[9] ［9］Biswas N, Umapathy S 1998 Appl. Spectrosc. 52 496
[10] ］Hoskins L C 1980 J. Chem. Phys. 72 4488
[11] ］Paraschuk D Y, Golovnin I V, Smekhova A G, Kobryanskii V M 2002 JETP Lett. 76 669
[12] ］Paraschuk D Y, Kobryanskii V M 2001 Phys. Rev. Lett. 87 207402
[13] ］Tian Y J, Li Z W, Zhang L Y, Zuo J, Gao S Q, Lu G H 2007 Appl. Phys. B 87 727
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[1] ［1］ Zhao X H, Ma F, Wu Y S, Ai X C, Zhang J P 2008 Acta Phys. Sin. 57 289 (in Chinese) ［赵晓辉、马菲、吴义室、艾希成、张建平 2008 57 289］
[2] ［2］Zuo J, Li Z W, Tian Y J, Chen J, Gao S Q, Lu G H 2007 Acta Phys. Sin. 56 890 (in Chinese) ［左剑、里佐威、田艳杰、陈健、高淑琴、陆国会 2007 56 890］
[3] ［3］Mendiara S N, Baquero R P, Katunar M R 2009 Appl. Magn. Reson. 35 549
[4] ［4］Kirsh V A, Hayes R B, Mayne S T 2006 J. Natl. Cancer I. 98 245
[5] ［5］Chu B S, Ichikawa S, Kanafusa S 2007 J. Am. Oil Chem. Soc. 84 1053
[6] ［6］Sugisaki M, Fujiwara M, Nair S V, Ruda H E, Cogdell R J, 2Hashimoto H 2009 Phys. Rev. B 80 035118
[7] ［7］Rumi M, Zerbi G, Mullen K 1997 J. Chem. Phys. 106 24
[8] ［8］Dudik J M, Johnson C R, Asher S A 1985 J. Chem. Phys. 82 1732
[9] ［9］Biswas N, Umapathy S 1998 Appl. Spectrosc. 52 496
[10] ］Hoskins L C 1980 J. Chem. Phys. 72 4488
[11] ］Paraschuk D Y, Golovnin I V, Smekhova A G, Kobryanskii V M 2002 JETP Lett. 76 669
[12] ］Paraschuk D Y, Kobryanskii V M 2001 Phys. Rev. Lett. 87 207402
[13] ］Tian Y J, Li Z W, Zhang L Y, Zuo J, Gao S Q, Lu G H 2007 Appl. Phys. B 87 727
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