1
|
Li Y, Li S, Wu Y, Ma Y, Ji W, Sun Y, Shi K. Immobilization of two dendritic organic phases onto silica and their molecular shape recognition for polycyclic aromatic hydrocarbons, tocopherols and carotenoid isomers. Anal Chim Acta 2024; 1288:342156. [PMID: 38220288 DOI: 10.1016/j.aca.2023.342156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 12/06/2023] [Accepted: 12/16/2023] [Indexed: 01/16/2024]
Abstract
BACKGROUND Molecular shape selectivity, based on the size and shape parameters of the molecule, such as length and planarity, is a separation process that can be used for compounds with restricted shapes, such as isomers. The separation of geometric isomers is challenging because these compounds have similar physicochemical properties but differ slightly in molecular shape. The ability to separate and quantify these isomers is important in high performance liquid chromatography (HPLC), which is one of the most widely used techniques in separation science today, because the shape of the molecule has a strong influence on biological processes. RESULTS We prepared symmetrical discoidal dendrimeric organomolecule gelators (GSDM) and o-phenylenediamine-derived low-molecular-weight dendrimeric organomolecule gelators (G1) and bonded them to silica surfaces. The dendritic organic compound-grafted silica (SiO2@GSDM and SiO2@G1) was used as HPLC stationary phases for the separation of shape-restricted isomers of polycyclic aromatic hydrocarbons (PAHs), carotenoids and tocopherols. The two phases exhibit a very high molecular shape selectivity compared to the commercially available alkyl phases. There are differences in molecular shape selectivity between the two stationary phases. Changes in the chemical structure of dendritic organic compounds can alter the orientation of the molecules, as well as changes in the molecular recognition ability. It was found that SiO2@GSDM has high molecular linear selectivity for PAHs at different temperatures, even at 50 °C. The planar selectivity of SiO2@GSDM was better for triphenylene and o-terphenyl benzenes compared to SiO2@G1. SIGNIFICANCE This separation behavior may be attributed to the combined effect of weak interaction centers, which allowed the effective separation of bioactive and shape-restricted isomers through multiple interactions. Furthermore, SiO2@GSDM showed better separation of tocopherols and carotenoids, suggesting that the backbone and ordered structure of organic molecular gelators is an effective way to improve the shape selectivity of the molecules, whereas the molecular orientation of the functional groups influences the separation mechanism of the shape-restricted isomers.
Collapse
Affiliation(s)
- Yuanyuan Li
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China.
| | - Shaorong Li
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Yongli Wu
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Yulong Ma
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Wenxin Ji
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Yonggang Sun
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Keren Shi
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| |
Collapse
|
5
|
Czaun M, Rahman MM, Takafuji M, Ihara H. Surface-initiated living radical polymerization of self-assembling L-phenylalanine-derived monomer from silica for RP-HPLC application. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22974] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
7
|
Melša P, Čajan M, Havlas Z, Mazal C. Substituent Effect on exo Stereoselectivity in the 1,3-Dipolar Cycloaddition Reaction of Tulipalin A with Nitrile Ylides. J Org Chem 2008; 73:3032-9. [DOI: 10.1021/jo702563n] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Petr Melša
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Department of Inorganic Chemistry, Faculty of Science, Palacký University, Křížkovského 10, 771 47 Olomouc, and Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Michal Čajan
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Department of Inorganic Chemistry, Faculty of Science, Palacký University, Křížkovského 10, 771 47 Olomouc, and Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Zdeněk Havlas
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Department of Inorganic Chemistry, Faculty of Science, Palacký University, Křížkovského 10, 771 47 Olomouc, and Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Ctibor Mazal
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Department of Inorganic Chemistry, Faculty of Science, Palacký University, Křížkovského 10, 771 47 Olomouc, and Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| |
Collapse
|
8
|
Rahman M, Czaun M, Takafuji M, Ihara H. Synthesis, Self-Assembling Properties, and Atom Transfer Radical Polymerization of an AlkylatedL-Phenylalanine-Derived Monomeric Organogel from Silica: A New Approach To Prepare Packing Materials for High-Performance Liquid Chromatography. Chemistry 2008; 14:1312-21. [DOI: 10.1002/chem.200701302] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
9
|
Dorcier A, Hartinger CG, Scopelliti R, Fish RH, Keppler BK, Dyson PJ. Studies on the reactivity of organometallic Ru-, Rh- and Os-pta complexes with DNA model compounds. J Inorg Biochem 2007; 102:1066-76. [PMID: 18086499 DOI: 10.1016/j.jinorgbio.2007.10.016] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2007] [Revised: 10/10/2007] [Accepted: 10/31/2007] [Indexed: 10/22/2022]
Abstract
The reactions of arene-metal complexes (arene=p-cymene, benzene or pentamethylcyclopentadienyl, metal=Ru, Rh or Os), including 1,3,5-triaza-7-phosphatricyclo-[3.3.1.1]decanephosphine (pta) and chloro co-ligands, with 9-methylguanine, adenine, and a series of nucleosides were studied in water to ascertain the binding modes. The products were characterized by NMR spectroscopy and electrospray ionization mass spectrometry (ESI-MS). Tandem mass spectrometry was found to provide excellent information on preferential binding sites. In general, the N7 position on guanine (the most basic site) was found to be the preferred donor atom for coordination to the metal complexes. The X-ray structures of the precursor complexes, [(eta5-C10H15)RhCl(pta-Me)2]Cl2, [(eta6-C10H14)OsCl(pta)2]Cl, and [(eta6-C6H6)OsCl2(CH3CN)], are also reported.
Collapse
Affiliation(s)
- Antoine Dorcier
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne EPFL, CH-1015 Lausanne, Switzerland
| | | | | | | | | | | |
Collapse
|