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Synthesis and evaluation of a ferrocene-bonded silica phase for reversed-phase high-performance liquid chromatography

机译：反相高效液相色谱法二茂铁键合硅胶相的合成与评价

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摘要

The preparation, characterization, and potential liquid chromatographic applications of a ferrocene-bonded silica stationary phase are presented. The phase was prepared by covalent bonding of ferrocene-derivatized aminosilane to silica gel then end-capping with trimethyl-chlorosilane. Use of the new stationary phase enabled good separations of alkylbenzenes, halobenzenes, polycyclic aromatic hydrocarbons, and even basic compounds under reversed-phase conditions. The linear relationship between logk (wherek is the retention factor) and the number of π electrons (n π) in the structures of polyaromatic hydrocarbons indicates that the mechanism of retention on the new stationary phase involves strong π-π interaction with one of the cyclopentadienyl (Cp) groups of the ferrocene. The retention increment for a methylene group was calculated. The value indicates that the mechanism of retention on the new stationary phase also involves a strong hydrophobic interaction, so the phase enables effective separation of compounds with a benzenering.
机译：介绍了二茂铁键合的硅胶固定相的制备，表征和潜在的液相色谱应用。该相通过将二茂铁衍生的氨基硅烷与硅胶共价键合，然后用三甲基氯硅烷进行封端来制备。使用新的固定相可以在反相条件下很好地分离烷基苯，卤代苯，多环芳烃，甚至碱性化合物。多元芳香烃结构中logk（其中k为保留因子）与π电子数（nπ）之间的线性关系表明，在新的固定相上的保留机理涉及与π的强π-π相互作用。二茂铁的环戊二烯基（Cp）基团之一。计算亚甲基的保留增量。该值表明在新固定相上的保留机理还涉及强疏水相互作用，因此该相能够有效分离具有苯环的化合物。

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