2024年6月6日，Elsevier 旗下top期刊《Talanta》在线发表了云南师范大学化学与化工学院谢生明教授课题组最新研究成果《Subcomponent self-assembly construction of tetrahedral cage FeII4L4 for high-resolution gas chromatographic separation》。云南师范大学化学化工学院谢生明教授为通讯作者。

https://www.sciencedirect.com/science/article/abs/pii/S0039914024007677

Abstract

Metal organic cages (MOCs), as an emerging discrete supramolecular compounds, have received widespread attention in separation, biomedicine, gas capture, catalysis, and molecular recognition due to their porosity, adjustability and stability. Herein, we present a new chiral MOC FeII4L4 coated capillary column prepared for gas chromatographic (GC) separation of different types of organic compounds, including n-alkanes, n-alcohols, alkylbenzenes, isomers, especially for racemic compounds. There are 20 different kinds of racemates (e.g., alcohols, ethers, epoxides, esters, alkenes, and aldehydes) were well resolved on the FeII4L4 chiral column and a maximum resolution value for 1-phenyl-1-propanol reaches 6.17. The FeII4L4 coated column exhibited high column efficiency (3100 plates m−1 for n-dodecane) and good enantiomeric resolution complementary to that of a commercial β-DEX 120 column and the previously reported chiral MOC [Fe4L6] (ClO4)8 coated column. The relative standard deviation (RSDs) of the peak area and retention time of glycidol and nitrotoluene were below 1.2%. This study reveals that chiral MOCs have good application prospects in chromatographic separation.

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