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Azide-Terminated RAFT Polymers for Biological Applications
Ziwen Jiang1,2, Huan He1,3, Hongxu Liu1
1Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts.
Current Protocols in Chemical Biology
|November 18, 2020
Summary
This study presents a method to add azide groups to Reversible Addition-Fragmentation chain-transfer (RAFT) polymers. These azide-terminated polymers enable click chemistry for bioconjugation, fluorophore labeling, and organelle targeting.
Area of Science:
- Polymer Chemistry
- Organic Synthesis
- Bioconjugation Chemistry
Background:
- Reversible Addition-Fragmentation chain-transfer (RAFT) polymerization is a versatile technique for synthetic polymer production.
- RAFT polymers are utilized in diverse biomedical applications such as drug delivery, imaging, and tissue engineering.
Purpose of the Study:
- To develop a synthetic route for introducing azide functionalities onto RAFT polymer chain ends.
- To establish a platform for facile chemical and bioconjugation reactions using azide-terminated RAFT polymers.
Main Methods:
- Synthesis of azide derivatives for chain transfer agents and radical initiators.
- Installation of azide groups at either the alpha- or omega-chain end of RAFT polymers.
- Utilizing click chemistry for conjugation of azide-terminated polymers with alkyne-containing molecules.
Main Results:
- Successfully synthesized azide-terminated RAFT polymers.
- Demonstrated the utility of these polymers in click reactions for bioconjugation.
- Showcased applications in fluorophore labeling and enhancing organelle targeting capabilities.
Conclusions:
- The developed methodology provides a broadly applicable scaffold for modifying RAFT polymers.
- Azide-terminated RAFT polymers offer a powerful tool for advanced applications in chemical biology and materials science.
