期刊
ANALYTICA CHIMICA ACTA
卷 988, 期 -, 页码 121-129出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2017.07.070
关键词
Triptycene derivatives; Stationary phases; Gas chromatography; Separation performance; Structural and positional isomers
资金
- National Natural Science Foundation of China [21575013]
- 111 Project in China [B07012]
Triptycene-based materials feature favorable physicochemical properties and unique molecular recognition ability that offer good potential as stationary phases for capillary gas chromatography (GC). Herein, we report the investigation of utilizing a pi-extended triptycene material (denoted as TQPP) for GC separations. As a result, the TQPP capillary column exhibited high column efficiency of 4030 plates m(-1) and high-resolution performance for a wide range of analytes, especially structural and positional isomers. Interestingly, the TQPP stationary phase showed unique shape selectivity for alkanes isomers and preferential retention for analytes with halogen atoms and H-bonding nature mainly through their halogen-bonding and H-bonding interactions. In addition, the TQPP column had good repeatability and reproducibility with the RSD values of 0.02-0.34% for run-to-run, 0.09-0.80% for day-to-day and 1.4-5.2% for column-to-column, respectively, and favorable thermal stability up to 280 degrees C. This work demonstrates the promising future of triptycene-based materials as a new class of stationary phases for GC separations. (C) 2017 Elsevier B.V. All rights reserved.
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