pH-induced structural changes of surface immobilized poly （L-lysine） by two-dimensional （2D） infrared correlation study

This paper reports the pH-induced structural changes in the surface immobilized poly（L-lysine）（PLL）film.Two-dimensional（2D） correlation analysis was applied to the Fourier transform infrared（FTIR）spectra of the surface-immobilized PLL film to examine the spectral changes induced by the alternations...

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Bibliographic Details
Published in:中国化学快报：英文版 2015 (2), p.173-176
Main Author: Eun Joo Yoo Boknam Chae Young Mee Jung Seung Woo Lee
Format: Article
Language:English
Subjects:
L-赖氨酸
pH值
二维
固定化
红外光谱
结构变化
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Summary:This paper reports the pH-induced structural changes in the surface immobilized poly（L-lysine）（PLL）film.Two-dimensional（2D） correlation analysis was applied to the Fourier transform infrared（FTIR）spectra of the surface-immobilized PLL film to examine the spectral changes induced by the alternations of the protonation state of the amino group in the side chain.Significant spectral changes in the FTIR spectra of the PLL film were observed between pH 7 and 8.The decrease in the protonation state of the amino group in the side chain induced spectral changes in the amino group as well as conformational changes in the alky]group in the side chain.From pH 1-8,the spectral changes in the amino and alkyl groups in the side chain occurred before those of the amide group in the main chain of the surface immobilized PLL film.
ISSN:1001-8417
1878-5964