光谱学与光谱分析 |
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Study of Reference and Order Parameter of Raman Spectroscopy Research on Alkane Phase Transition |
JIN Yuan-hao,CHEN Yi-ting,DU Wei-min* |
School of Physics, Peking University, Beijing 100871, China |
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Abstract Raman spectroscopy was used to investigate the order-disorder phase transition of n-eicosane for real-time cooling run. At the phase transition temperature, the integrated intensity of the 1 300 cm-1 spectra range changes greatly, which requires further consideration of 1 300 cm-1 as a reference in the research on polymer and biomembrane using Raman spectroscopy. The experiment support was provided for doubt about order parameter based on 1 130 cm-1 that it did not refer to generally accepted interpretation of an order parameter and it proved that the order definition could just be used as a relative measure method for disorder.
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Received: 2008-08-10
Accepted: 2008-11-20
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Corresponding Authors:
DU Wei-min
E-mail: wd00@pku.edu.cn
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