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Related Experiment Video

Updated: Apr 21, 2026

Microwave-assisted Functionalization of Polyethylene glycol and On-resin Peptides for Use in Chain Polymerizations and Hydrogel Formation

Microwave-assisted Functionalization of Polyethylene glycol and On-resin Peptides for Use in Chain Polymerizations and Hydrogel Formation

Published on: October 29, 2013

Poly(Ethylene glycol)-based backbones with high peptide loading capacities.

Aoife O'Connor¹, Jean-Noel Marsat², Annachiara Mitrugno³

¹Department of Pharmaceutical and Medicinal Chemistry, Centre for Synthesis and Chemical Biology, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland. aoifemoconnor87@gmail.com.

Molecules (Basel, Switzerland)

|November 1, 2014

Summary

Functionalized polymers enhance peptide loading capacity for therapeutic applications. Thiol-ene reactions successfully conjugated RGD peptides to polymers for platelet adhesion studies.

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Area of Science:

Polymer Chemistry
Bioconjugation
Materials Science

Background:

Peptides offer therapeutic and diagnostic potential but face limitations like short half-life and poor stability.
Linear polymers, such as poly(ethylene glycol), can improve peptide properties but often have limited conjugation sites, restricting drug loading capacity.

Purpose of the Study:

To develop novel polymer-peptide conjugates with increased loading capacities for enhanced therapeutic and diagnostic applications.
To explore various conjugation chemistries for attaching functionalized peptides to polymers.

Main Methods:

Utilized functionalized linear poly(ethylene glycol) derivatives for peptide conjugation.
Employed copper-catalyzed azide-alkyne cycloaddition, amide coupling, and thiol-ene reactions for conjugation.
Synthesized RGD motif-containing peptide conjugates using the thiol-ene reaction with poly(allyl glycidyl ether).

Main Results:

Demonstrated increased loading capacities of peptides onto functionalized polymers compared to traditional methods.
Successfully conjugated peptides with specific functional groups using diverse chemical strategies.
Developed a polymer-peptide conjugate via thiol-ene reaction, suitable for investigating platelet adhesion.

Conclusions:

Functionalized polymers significantly enhance peptide loading capacity, overcoming limitations of traditional polymer-peptide conjugates.
The choice of conjugation chemistry is crucial for successful and efficient peptide attachment.
The developed RGD-conjugated polymer shows promise for applications in platelet adhesion research and potentially other biomedical fields.