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Wang L, Han S, Yu H, Yu Q, Pei D, Lv W, Wang J, Li X, Ding R, Wang Q, Lv M. Porous Organic Cage-Embedded C10-Modified Silica as HPLC Stationary Phase and Its Multiple Separation Functions. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248895. [PMID: 36558026 PMCID: PMC9782137 DOI: 10.3390/molecules27248895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/06/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
Reduced imine cage (RCC3) was covalently bonded to the surface of silica spheres, and then the secondary amine group of the molecular cage was embedded in non-polar C10 for modification to prepare a novel RCC3-C10@silica HPLC stationary phase with multiple separation functions. Through infrared spectroscopy, thermogravimetric analysis and nitrogen adsorption-desorption characterization, it was confirmed that RCC3-C10 was successfully bonded to the surface of silica spheres. The resolution of RCC3-C10@silica in reversed-phase separation mode is as high as 2.95, 3.73, 3.27 and 4.09 for p-phenethyl alcohol, 1-phenyl-2-propanol, p-methylphenethyl alcohol and 1-phenyl-1-propanol, indicating that the stationary phase has excellent chiral resolution performance. In reversed-phase and hydrophilic separation modes, RCC3-C10@silica realized the separation and analysis of a total of 70 compounds in 8 classes of Tanaka mixtures, alkylbenzene rings, polyphenyl rings, phenols, anilines, sulfonamides, nucleosides and flavonoids, and the analysis of a variety of chiral and achiral complex mixtures have been completed at the same time. Compared with the traditional C18 commercial column, RCC3-C10@silica exhibits better chromatographic separation selectivity, aromatic selectivity and polar selectivity. The multifunctional separation mechanism exhibited by the stationary phase originates from various synergistic effects such as hydrophobic interaction, π-π interaction, hydrogen bonding and steric interaction provided by RCC3 and C10 groups. This work provides flexible selectivity and application prospects for novel multi-separation functional chromatographic columns.
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Affiliation(s)
- Litao Wang
- School of Pharmacy, Jining Medical University, Jining 272000, China
| | - Siqi Han
- School of Pharmacy, Jining Medical University, Jining 272000, China
| | - Haiyang Yu
- School of Pharmacy, Jining Medical University, Jining 272000, China
| | - Qinghua Yu
- School of Pharmacy, Jining Medical University, Jining 272000, China
- School of Pharmacy, Weifang Medical University, Weifang 261000, China
| | - Dong Pei
- Qingdao Center of Resource Chemistry & New Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Qingdao 266000, China
| | - Wenjing Lv
- School of Pharmacy, Jining Medical University, Jining 272000, China
| | - Jiasheng Wang
- School of Pharmacy, Jining Medical University, Jining 272000, China
| | - Xingyu Li
- School of Pharmacy, Jining Medical University, Jining 272000, China
| | - Ruifang Ding
- School of Pharmacy, Jining Medical University, Jining 272000, China
- Correspondence: (R.D.); (Q.W.); (M.L.)
| | - Qibao Wang
- School of Pharmacy, Jining Medical University, Jining 272000, China
- Correspondence: (R.D.); (Q.W.); (M.L.)
| | - Mei Lv
- School of Pharmacy, Jining Medical University, Jining 272000, China
- Correspondence: (R.D.); (Q.W.); (M.L.)
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