Abstract
Two new kinds of crown ethers, 4,4-dipentadecyl- or 4,3′0dipentadecyldibenzo-30-crown-10 and 3-pentadecylbenzo-15-crown-5, were coated on glass capillary columns and fused-silica capillary columns, and their chromatographic characteristics studied. The polarity, selectivity and stability of the crown ethers were characterized. The rôle of the crown ether ring in separating solutes is also mentioned.
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