Next Article in Journal
A Simple and Practical Solvent-Free Preparation of Polymaleimide
Previous Article in Journal
Synthesis of New Visnagen and Khellin Furochromone Pyrimidine Derivatives and Their Anti-Inflammatory and Analgesic Activity
Article Menu

Article Versions

Export Article

Open AccessArticle
Molecules 2011, 16(3), 1973-1980;

Effect of End Groups on the Raman Spectra of Lycopene and β-Carotene under High Pressure

Center for Condensed Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin, 150001, China
College of Physics, Ji Lin University, Changchun 130023, China
Authors to whom correspondence should be addressed.
Received: 25 November 2010 / Revised: 8 February 2011 / Accepted: 10 February 2011 / Published: 25 February 2011
PDF [394 KB, uploaded 18 June 2014]   |  


The Raman spectra of all-trans-lycopene in n-hexane were measured under high pressure, and the results compared with those of β-carotene. The different pressure effects on Raman spectra are analyzed taking into account the different structures of lycopene and β-carotene molecules. It is concluded that: (a) the vibronic coupling between the S1 and S0 states of β-carotene is stronger than that of lycopene, (b) the diabatic frequency increment of the ν1 mode is more susceptible to pressure than that of the ν2 mode for lycopene, and (c) β-rings rotation can relieve the pressure effect on the C=C bond length in β-carotene. This work provides some insights for elucidating the structural and environmental effects on Raman spectra of carotenoids.
Keywords: pressure; structure; Raman; lycopene; β-carotene pressure; structure; Raman; lycopene; β-carotene

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Huo, M.-M.; Liu, W.-L.; Zheng, Z.-R.; Zhang, W.; Li, A.-H.; Xu, D.-P. Effect of End Groups on the Raman Spectra of Lycopene and β-Carotene under High Pressure. Molecules 2011, 16, 1973-1980.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top