Characterization of octadecylsilane stationary phases on commercially available silica-based packing materials by Raman spectroscopy.
Characterization of octadecylsilane stationary phases on commercially available silica-based packing materials by Raman spectroscopy.
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通过拉曼光谱表征市售二氧化硅基填料上的十八烷基硅烷固定相。
DOI：
10.1021/ac961118u
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发表时间：
1997
影响因子：
7.4
通讯作者：
J. Pemberton
中科院分区：
文献类型：
--
作者：
M. Ho;M. Cai;J. Pemberton
采用拉曼光谱法对两种市售的含有十八烷基硅烷固定相的固相萃取填料Isolute C18 MF和Isolute C18进行了表征。从这样的系统中可以获得质量优异的拉曼光谱，并提供关于固定相中烷基链构象的直接信息。从ν（C-C）和ν（C-H）光谱区的数据表明，这些固定相的烷基链以高度无序的状态存在，这与纯液体非常相似。
Two commercially available solid phase extraction packing materials containing octadecylsilane stationary phases, Isolute C18MF and Isolute C18, were characterized using Raman spectroscopy. Raman spectra of excellent quality can be obtained from such systems and provide direct information about the alkyl chain conformation in the stationary phase. Data from the ν(C-C) and ν(C-H) spectral regions suggest that the alkyl chains of these stationary phases exist in a highly disordered state which is very similar to that of the neat liquid.