- 作者: Cheng-Shyong Chang, Hou-Jen Tsai and Tschau-Gan Den
- 中文摘要: Polycyclic aromatic hydrocarbons (PAHs) of different molecular shapes were tested and compared with a prepared C60-fullerene-phase, and with the commercial Amino-phase or RP-18-phase in the mobile phase of methanol/dichloromethane (90/10 ~ 70/30) or n-hexane/dichloromethane (80/20). The chromatographic separation results indicate that C60-fullerene-phase achieves the special selectivities and performances for the separation of PAHs. Based on the retention mechanism of "π-π” complex interaction or "Sock-Ball" shaped combination, PAHs undergo more pronounced interaction with C60 ligand. For example, decacy-clone, a sock-shaped PAH, the structure of which was calculated by means of semi-empirical molecular orbital methods, possesses stronger retention to give a "Sock-Ball" chromatographic separation with C60- fullerene-phase. However, PAHs with bend, planar, or co-planar structures eluted on C60-fullerene-phase undergo adsorption chromatography, bit possess weaker retentions. The retention power of "Sock-Ball" chromatography can successfully recognize the different molecular shapes of PAHs.
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