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author:

Song, Ruike (Song, Ruike.) [1] | Liao, Gan (Liao, Gan.) [2] | Lin, Jiali (Lin, Jiali.) [3] | Wu, Jiali (Wu, Jiali.) [4] | Huang, Lu (Huang, Lu.) [5]

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Scopus

Abstract:

Metal organic frameworks ( MOFs ) are crystalline compounds composed of metal ions ( or metal clusters) and organic ligands. Chiral MOFs have been successfully utilized as novel materials for the separation of chiral enantiomers by chromatography, demonstrating excellent chiral separation performance. In this study, a chiral MOF-modified silica monolithic capillary column was used for pressurized capillary electrochromatography. First, a chiral MOF (Coglycyl-L-glutamic acid, Co-L-GG ) was synthesized. This MOF was then used to prepare a chiral capillary monolithic column via a one-step in situ polymerization method. The optimal conditions for preparing the chiral capillary monolithic column were determined as follows: Co-L-GG amount, 5 mg; polyethylene glycol amount, 096 mg; tetramethoxysilane dosage, 36 mL; trimethoxymethylsilane dosage, 04 mL. Next, the effects of the separation conditions on the separation of chiral drugs were investigated. Under the conditions of an applied voltage of-20 kV and a mobile phase consisting of acetonitrile and 20 mmol/L disodium hydrogen phosphate (80 -20, v/v), six chiral drugs were separated within 3 min, with baseline separation achieved for amlodipine, fluvastatin, and tryptophan. Moreover, the prepared chiral capillary monolithic column exhibited good reproducibility and stability. Finally, molecular docking studies were conducted using AutoDock to explore the chiral recognition mechanism, and the results were analyzed using Discovery Studio. The results indicated that larger differences in binding free energy between Co-L-GG and the enantiomers of the chiral drugs were correlated with higher enantioselectivity factors. However, this correlation did not necessarily lead to an increase in resolution. Co-L-GG, which is enriched with primary amines, secondary amines, and carbonyl groups, demonstrated enantiomeric recognition capability. In conclusion, this study demonstrates that chiral MOFs can be effectively used as chiral functional monomers to prepare chiral monolithic capillary columns, highlighting their significant potential for the separation and analysis of chiral compounds. The comprehensive exploration of the synthesis, characterization, and applications of these MOFs will help provide valuable insights into the development of advanced separation technologies

Keyword:

chiral metal organic frameworks (CMOF) chiral separation molecular docking pressurized capillary electrochromatography (pCEC) recognition mechanism silica monolithic capillary column

Community:

  • [ 1 ] [Song, Ruike]Fuzhou Univ, Coll Chem Engn, Fuzhou 350108, Peoples R China
  • [ 2 ] [Song, Ruike]Minjiang Univ, Coll Mat & Chem Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 3 ] [Liao, Gan]Minjiang Univ, Coll Mat & Chem Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 4 ] [Lin, Jiali]Minjiang Univ, Coll Mat & Chem Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 5 ] [Wu, Jiali]Minjiang Univ, Coll Mat & Chem Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 6 ] [Huang, Lu]Minjiang Univ, Coll Mat & Chem Engn, Fuzhou 350108, Fujian, Peoples R China

Reprint 's Address:

  • [Huang, Lu]Minjiang Univ, Coll Mat & Chem Engn, Fuzhou 350108, Fujian, Peoples R China;;

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Source :

CHINESE JOURNAL OF CHROMATOGRAPHY

ISSN: 1000-8713

Year: 2024

Issue: 11

Volume: 42

Page: 1087-1093

1 . 2 0 0

JCR@2023

Cited Count:

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ESI Highly Cited Papers on the List: 0 Unfold All

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30 Days PV: 0

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