Ionic liquid functionalized β-cyclodextrin and C18 mixed-mode stationary phase with achiral and chiral separation...

Area of Science:

• Chromatography and Separation Science
• Materials Chemistry
• Analytical Chemistry

Background:

• Developing versatile stationary phases is crucial for efficient chromatographic separations.
• Existing materials often lack the ability to perform multiple separation modes simultaneously.
• Chiral recognition and multi-modal interactions are highly sought after in analytical chemistry.

Purpose of the Study:

• To synthesize and characterize a novel mixed-mode stationary phase material.
• To evaluate the material's performance in reversed-phase, hydrophilic interaction, ion-exchange, and chiral separations.
• To investigate the retention mechanisms governing the multi-modal separation capabilities.

Main Methods:

• Synthesis of a novel stationary phase (Sil-VMBD) using specific functional monomers.
• Characterization of the material using techniques like NMR, FTIR, elemental analysis, and TGA.
• Packing the material into a column and evaluating its performance with various hydrophobic, hydrophilic, and ionic compounds, including enantiomers.

Main Results:

• The synthesized Sil-VMBD material demonstrated effective reversed-phase, hydrophilic interaction, and ion-exchange properties.
• Rapid enantioseparation of various compounds, including 1-phenyl-1-propanol, warfarin, styrene oxide, ibuprofen, and ketoprofen, was achieved.
• The material exhibited multi-modal and chiral separation abilities, confirmed by varying mobile phase composition and pH.

Conclusions:

• The novel mixed-mode stationary phase exhibits excellent versatility for complex separation challenges.
• The material's unique combination of interactions allows for simultaneous multi-modal and chiral recognition.
• This development offers a promising tool for advanced analytical separations in various scientific fields.