Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 22nd May 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 24, 2014
Previous Article Next Article

Oximes as reversible links in polymer chemistry: dynamic macromolecular stars

Author affiliations

Abstract

We demonstrate the formation of oxime-functional macromolecular stars that are able to dissociate and reconstruct themselves upon application of a stimulus. The reversible nature of the oxime bond in the presence of externally added alkoxyamines or carbonyl compounds enables reconfiguration via competitive exchange. Reversible addition–fragmentation chain transfer (RAFT) polymerization was utilized to prepare well-defined amphiphilic block copolymers in which a hydrophobic keto-functional block allowed self-assembly into micelles in water. Adding a difunctional alkoxyamine small molecule to these solutions resulted in crosslinking of the micelles to yield macromolecular stars. The reversible nature of the O-alkyl oxime linkages was demonstrated via competitive exchange with excess of carbonyl compounds or monofunctional alkoxyamine under acidic conditions and at elevated temperatures to result in dissociation of the stars to unimolecular oxime-functional polymer chains.

Graphical abstract: Oximes as reversible links in polymer chemistry: dynamic macromolecular stars

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Sep 2014, accepted on 24 Sep 2014 and first published on 09 Oct 2014


Article type: Paper
DOI: 10.1039/C4PY01282H
Author version
available:
Download author version (PDF)
Polym. Chem., 2014,5, 6923-6931

  •   Request permissions

    Oximes as reversible links in polymer chemistry: dynamic macromolecular stars

    S. Mukherjee, A. P. Bapat, M. R. Hill and B. S. Sumerlin, Polym. Chem., 2014, 5, 6923
    DOI: 10.1039/C4PY01282H

Search articles by author

Spotlight

Advertisements