Synthesis of Self-assembling Cyclic Peptide-polymer Conjugates using Click Chemistry

Robert Chapman; Katrina A. Jolliffe; Sébastien Perrier

doi:10.1071/CH10128

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Synthesis of Self-assembling Cyclic Peptide-polymer Conjugates using Click Chemistry

Robert Chapman ^A ^B , Katrina A. Jolliffe ^A and Sébastien Perrier ^A

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^A Key Centre for Polymers & Colloids, School of Chemistry, The University of Sydney, NSW 2006, Australia.

^B Corresponding author. Email: r.chapman@chem.usyd.edu.au

Australian Journal of Chemistry 63(8) 1169-1172 https://doi.org/10.1071/CH10128
Submitted: 18 March 2010 Accepted: 30 June 2010 Published: 10 August 2010

Abstract

Self-assembling cyclic peptide-polymer conjugates were prepared by ‘clicking’ polymers (prepared by RAFT polymerization) to an azide functionalized d-alt-l cyclic octapeptide via the Huisgen 1,3-dipolar cycloaddition reaction. Due to the high graft density, the efficiency of the click chemistry conjugation reaction was found to be highly dependent on the size of the polymer. At relatively low molecular weights, as many as four polymer chains could be grafted to each 8 residue cyclic peptide ring. Evidence for the self assembly of the conjugates into peptide-polymer nanotubes was observed by TEM and IR.

Acknowledgements

R.C. thanks the Australian Government for an Australian Postgraduate Award scholarship, and the University of Sydney for funding to attend PPC11. We are grateful to Dominik Konkolewicz for experimental assistance and Polymer Laboratories for SEC equipment and technical support.

References

Synthesis of Self-assembling Cyclic Peptide-polymer Conjugates using Click Chemistry

Abstract

Acknowledgements

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