title: Iptycene-based stationary phase with three-dimensional aromatic structure for highly selective separation of H-bonding analytes and aromatic isomers.
abstract: Unique structures and molecular recognition ability endow iptycene derivatives with great potential as stationary phases in chromatography, which, however, has not been explored yet. Herein, we report the first example of utilizing a pentiptycene quinone (PQ) for gas chromatographic (GC) separations. Remarkably, the statically coated capillary column with the stationary phase achieved extremely high column efficiency of 4800 plates/m. It exhibited preferential retention and high resolving capability for H-bonding and aromatic analytes and positional isomers, showing advantages over the ordinary polysiloxane phase. Moreover, the fabricated iptycene column showed excellent separation repeatability with RSD values of 0.02-0.06% for intra-day, 0.20-0.35% for inter-day and 3.1-5.5% for between-column, respectively. In conclusion, iptycene derivatives as a new class of stationary phases show promising future for their use in GC separations.
authors.affiliation: 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.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Yang
authors.affiliation: CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Han
authors.affiliation: 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.
authors.forename: Meiling
authors.initials: M
authors.lastname: Qi
authors.affiliation: CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: cchen@iccas.ac.cn.
authors.forename: Chuanfeng
authors.initials: C
authors.lastname: Chen
mesh_terms: D000873:Anthracenes / Q000737:chemistry*; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D002849:Chromatography, Gas; D007536:Isomerism; D011809:Quinones / Q000737:chemistry; D012833:Siloxanes / Q000737:chemistry
chemical_list: D000873:Anthracenes; D011809:Quinones; D012833:Siloxanes
keywords: Capillary gas chromatography; Iptycene derivative; Stationary phase