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| Effects of External Fields on CC Atomic Vibrations Modulated by Electron Band Gap |
| GONG Nan1, CAO Xian-wen1, SUN Cheng-lin1, FANG Wen-hui3, YUAN Ju-hui2, GAO Shu-qin1, LI Zuo-wei1, CHEN Wei2*, FU Hao-yang1* |
1. College of Physics, Jilin University, Changchun 130012, China
2. China-Japan Union Hospital, Jilin University, Changchun 130033, China
3. College of Science, Changchun University of Science and Technology, Changchun 130022, China |
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Abstract As an important technique to study the linear polyene molecules, Resonance Raman spectroscopy perfectly characterizes the CC vibrations modulated by the π-electron band gap. This modulation generated by electron-phonon coupling is significantly influenced by external fields. In this paper, we illustrate the dependence of CC vibration modulated by π-electron in different environments such as temperature, pressure, phase and solvent. The results show that the decrease of system energy and the narrowing of π-electron band gap lead to enhancements of the vibrational modulation. Thus, there are enhances of electron-phonon coupling as well as Raman intensity, result of which the spectra red shift. This research is of great significance for a better interpretation on the structural dependence of linear polyene's spectral properties and physical process of its resonance Raman scattering. The results also serve as an important reference for developing high quality photoelectric devices.
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Received: 2017-06-30
Accepted: 2017-10-31
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Corresponding Authors:
CHEN Wei, FU Hao-yang
E-mail: fuhy16@mails.jlu.edu.cn；chenweidrl1999@163.com
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