An attempt for fast separation of enantiomers in nano-liquid chromatography and capillary electrochromatography.

Electrophoresis

Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Tbilisi, Georgia.

Published: August 2017

In the present study, an attempt was made to achieve separation of enantiomers within a minute in nano-LC and CEC. In order to achieve this goal several parameters were optimized from the viewpoint of the property of chiral analytes, concentration of the chiral selector in the packing material, capillary dimensions, and separation mode. The enantiomers of several of the applied chiral sulfoxides could be resolved with the analysis time <1 min. Some instrumental obstacles hindering further reduction of analysis time are also highlighted.

Download full-text PDF

Source
http://dx.doi.org/10.1002/elps.201700126DOI Listing

Publication Analysis

Top Keywords

separation enantiomers
8
attempt fast
4
fast separation
4
enantiomers nano-liquid
4
nano-liquid chromatography
4
chromatography capillary
4
capillary electrochromatography
4
electrochromatography study
4
study attempt
4
attempt achieve
4

Similar Publications

NMR-based structure elucidation and chiral separation of N-cyclohexylmethylone, a novel designer drug.

Forensic Sci Int

December 2024

Department of Pharmaceutical Chemistry, Institute of Pharmaceutical Sciences, University of Graz, Schubertstraße 1, Graz A-8010, Austria. Electronic address:

Synthetic cathinones belong to one of the biggest and most popular classes of New Psychoactive Substances. Each year, new derivatives appear on the drug market, traded under various labels like "bath salts" or "legal highs". In recent years, the emergence of new cathinone derivatives, containing a cyclohexyl residue, has been observed.

View Article and Find Full Text PDF

In this Letter, we have proposed an all-optical scheme for chiral particle separation with a microcylinder-pair system (MCPS) with a micrometer scale channel, applicable in microfluidic environments. By illuminating the MCPS with two counter-incident plane waves of orthogonal polarization, the electromagnetic chirality gradient can be generated. The MCPS can also enhance chirality-dependent lateral optical forces of the coupled fields so that the setup can shift trapping equilibrium positions for opposite-handedness nanoparticles and make the sideways motion observable.

View Article and Find Full Text PDF

Construction of Chirality-Sorting Optical Force Pairs.

Phys Rev Lett

December 2024

Optics Research Group, Delft University of Technology, Department of Imaging Physics, Lorentzweg 1, 2628CJ Delft, The Netherlands.

Chiral objects are abundant in nature, and although the enantiomers have almost identical physical properties apart from their handedness, they can exhibit significantly different chemical properties and biological functions. This underscores the importance of sorting chiral substances. In this Letter, we demonstrate that chirality-sorting optical force pairs can be inversely generated in a tightly focused Gaussian beam by tailoring the input polarization state.

View Article and Find Full Text PDF

Simultaneous separation of the enantiomers of six anticoagulant rodenticides using chiral supercritical fluid chromatography-mass spectrometry.

J Chromatogr A

December 2024

I. U. CINQUIMA, Analytical Chemistry Group (TESEA), Dept. Analytical Chemistry, Faculty of Sciences, University of Valladolid 47011, Valladolid, Spain. Electronic address:

The simultaneous separation of the enantiomers of six anticoagulant rodenticides, derived from 4-hydroxycoumarin, has been studied in this work. Ten different stationary phases (zwitterionic, Pirkle-type, polysaccharides and macrocyclic antibiotics derivatives) were evaluated by using supercritical fluid chromatography coupled to two different detectors (circular dichroism and mass spectrometry-single quadrupole). The effect of the type of organic modifier and temperature on the chiral separation was investigated, and the best results were obtained with the column Regis S,S-Whelk-O1 at 25 °C when using a gradient elution program with methanol as organic modifier.

View Article and Find Full Text PDF

The joint use of deep eutectic solvents (DESs) and cyclodextrins (CDs) has been well demonstrated to have a promoting effect on chiral separation in capillary electrophoresis (CE). These studies focused on constructing synergistic separation systems by adding DESs and CDs to the buffer solution respectively. In this work, for the first time, β-cyclodextrin (β-CD), methyl-β-cyclodextrin (M-β-CD), and hydroxypropyl-β-cyclodextrin (HP-β-CD) were directly used as precursors to prepare several CDs-based deep eutectic supramolecules (DESUPs) by assembling with two organic acids (L-lactic acid and L-malic acid) in different ratios through a simple two-phase mixing.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!