Enrofloxacin-imprinted monolithic columns synthesized using reversible addition-fragmentation chain transfer...

Area of Science:

• Analytical Chemistry
• Polymer Science
• Separation Science

Background:

• Selective separation of pharmaceuticals like enrofloxacin is crucial in analytical chemistry.
• Developing efficient monolithic columns for molecularly imprinted polymers (MIPs) is an ongoing challenge.

Purpose of the Study:

• To prepare molecularly imprinted monolithic columns for selective enrofloxacin separation using RAFT polymerization.
• To investigate the relationship between synthesis conditions, monolith morphology, and separation performance.

Main Methods:

• Reversible Addition-Fragmentation Chain Transfer (RAFT)-mediated radical polymerization was employed to synthesize monolithic MIPs.
• Monolith structures were characterized to correlate synthesis parameters with morphology.
• Liquid chromatography was used to evaluate the separation performance of the prepared columns.

Main Results:

• Optimized RAFT polymerization conditions led to the formation of MIP monoliths with high selectivity and improved column efficiency for enrofloxacin.
• The study demonstrated that RAFT polymerization offers adjustable conditions for controlling monolith morphology.
• Homogeneous macro-pore size distribution and a large specific surface area were identified as key factors for good separation ability.

Conclusions:

• RAFT polymerization is a versatile technique for creating MIP monolithic materials with tailored morphologies.
• The developed MIP monolithic columns show significant potential for the selective and efficient separation of enrofloxacin.
• Controlling pore structure and surface area is critical for enhancing the performance of MIP-based separation materials.