Features of a truxene-based stationary phase in capillary gas chromatography for separation of some challenging isomers.
Herein we report the first example of exploring truxene-based derivatives for gas chromatographic (GC) separations. The fabricated thiophene-functionalized truxene (TFT) column exhibited weak polarity and efficiencies as high as 4000plates/m for 0.250mm i.d. columns. TFT column showed preferential retention for halogenated and alkyl benzene analytes, and especially, high resolving capability for the xylene isomers, di- and trichlorobiphenyls (di-CB and tri-CB) isomers. Interestingly, its unique retentions for the latter analytes were found to be closely related with their dihedral angles and the locations of chlorine atoms. This finding on the retention trend has not been reported in GC separations, which may provide a new perspective in elucidating retention behaviours for specific analytes. Moreover, TFT column exhibited high thermal stability up to 320°C and excellent repeatability. This work demonstrates the promising future of truxene derivatives in the separation science.
Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials and School of Chemistry, Beijing Institute of Technology, Beijing 100081, China; Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China.
Qing
Q
Lv
College of Chemistry and Chemical Engineering, Taishan University, Taian 271021, China.
Shuai
S
Feng
Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials and School of Chemistry, Beijing Institute of Technology, Beijing 100081, China.
Lingmin
L
Jing
Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China.
Qing
Q
Zhang
Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials and School of Chemistry, Beijing Institute of Technology, Beijing 100081, China. Electronic address: mlqi@bit.edu.cn.
Meiling
M
Qi
Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials and School of Chemistry, Beijing Institute of Technology, Beijing 100081, China. Electronic address: jinlwang@bit.edu.cn.
Jinliang
J
Wang
Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China.
Hua
H
Bai
Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials and School of Chemistry, Beijing Institute of Technology, Beijing 100081, China.
Ruonong
R
Fu
D002849:Chromatography, Gas / Q000295:instrumentation / Q000379:methods; D007536:Isomerism; D013876:Thiophenes / Q000737:chemistry*
D013876:Thiophenes
Capillary gas chromatography; Di- and tri-chlorodiphenyls; Stationary phase; Truxene derivative; Xylene isomers