Benzimidazolium Ionic Liquid Functionalized Star-polycaprolactone Stationary Phase for Capillary Gas Chromatography

IF 1.1 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Canadian Journal of Chemistry Pub Date : 2023-11-08 DOI:10.1139/cjc-2023-0068

Ruonan Chen, Hongbing Yang, Qiuchen Huang, Mengyi Ba, Wen Li, Yanli Song, Zhiqiang Cai, Tao Sun, Qiaoqiao Feng, Shuai Li

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Abstract

In this work, an innovative ionic liquid functionalized star-shape-polymer is synthesized by coupling star-polycaprolactone with benzimidazolium (star-PCL-Bim), and statically coated into a capillary column for gas chromatographic (GC) separations. The fabricated star-PCL-Bim capillary column with moderate-polar nature reveals a high column efficiency of 3598 plates/m for n-dodecane at 120°C, and advantageous distinguishing ability (R > 1.5) for 9 aromatic isomer mixtures and 12 cis-/trans-isomers. Its excellent resolving capacity can be credit to the architecture of star-PCL-Bim, the PCL arms and π-electron-rich benzimidazolium cations, and it results in a quite different retention behavior of star-PCL-Bim from that of star-PCL and commercial HP-35 columns, with “dual-nature” selectivity in separating a mixture including 29 compounds. These favorable chromatographic characteristics demonstrate the great application potential of this material in GC, and provide a prospective strategy to obtain high-performance stationary phases.

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苯并咪唑离子液体功能化星型聚己内酯毛细管气相色谱固定相

在这项工作中，通过将星形聚己内酯与苯并咪唑偶联(star-PCL-Bim)合成了一种创新的离子液体功能化星形聚合物，并将其静态涂覆在毛细管柱中用于气相色谱(GC)分离。所制备的中极性star-PCL-Bim毛细管柱在120℃下对正十二烷的色谱效率高达3598片/m，具有良好的区分能力(R >1.5) 9种芳香异构体混合物和12种顺式/反式异构体。其优异的分辨能力可归功于star-PCL- bim、PCL臂和富π电子苯并咪唑阳离子的结构，这使得star-PCL- bim的保留行为与star-PCL和商用HP-35色谱完全不同，在分离包含29种化合物的混合物时具有“双重性”选择性。这些良好的色谱特性显示了该材料在气相色谱中的巨大应用潜力，为获得高性能固定相提供了一种前瞻性策略。

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来源期刊

Canadian Journal of Chemistry 化学-化学综合

CiteScore

1.90

自引率

9.10%

发文量

审稿时长

1 months

期刊介绍： Published since 1929, the Canadian Journal of Chemistry reports current research findings in all branches of chemistry. It includes the traditional areas of analytical, inorganic, organic, and physical-theoretical chemistry and newer interdisciplinary areas such as materials science, spectroscopy, chemical physics, and biological, medicinal and environmental chemistry. Articles describing original research are welcomed.