| 光谱学与光谱分析 |
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| Resonance Raman Spectra of Linear Polymer Molecule |
| ZHANG Xue2, SUN Mei-jiao2, LI Shuo2, LIU Tie-cheng1, 2*, SUN Cheng-lin1, 2, LI Zuo-wei2 |
1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
2. College of Physics，Jilin University，Changchun 130012，China |
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Abstract The present paper summarizes the characteristics of resonance Raman spectra of the linear polymer molecule, and its relations with the molecular structure, including: electronic spectra(ultraviolet-visible absorption spectrum), Raman spectra characteristics and its relations with external field; Modulation relation between the electron energy gap and CC atom vibration; Several experimental results were obtained: The UV-visible absorption spectra are red-shifted with decreasing temperature, increasing solvent density and reducing solution concentration, and because the linear polymer molecule has high structured order, decreasing π electron energy gap; extended π electronic delocalization, large effective conjugation length, large intensity of the Raman activity, Raman spectrum are red-shifted, with large scattering cross section. “Amplitude modes” are the ideal theory models to study the linear polymer molecule.
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Received: 2013-07-11
Accepted: 2013-11-20
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Corresponding Authors:
LIU Tie-cheng
E-mail: liutc@jlu.edu.cn
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