Issue 6, 2011

Synthesis of thermoresponsive oxazolone end-functional polymers for reactions with amines using thiol-Michael addition “click” chemistry

Abstract

Well-defined poly(N-isopropylacrylamide) (PNIPAM) polymers with an oxazolone ring at the chain end have been synthesized by combining controlled radical polymerization and thiol-Michael addition “click” chemistry. First, PNIPAM was synthesized using reversible addition–fragmentation chain transfer (RAFT) polymerization to afford polymers of controlled molecular weight and molecular weight distribution (Mn (1H NMR) = 3200 g mol−1; PDISEC = 1.05). The chain end was quantitatively converted to a thiol by aminolysis. Then, the functional monomer vinyl azlactone (VDM) was quantitatively “clicked” onto the chain end using a thiol-Michael addition reaction. The polymers were reacted with a model amine in order to demonstrate the potential of these polymers for bioconjugation.

Graphical abstract: Synthesis of thermoresponsive oxazolone end-functional polymers for reactions with amines using thiol-Michael addition “click” chemistry

Supplementary files

Article information

Article type
Communication
Submitted
08 Feb 2011
Accepted
19 Mar 2011
First published
16 May 2011

Polym. Chem., 2011,2, 1258-1260

Synthesis of thermoresponsive oxazolone end-functional polymers for reactions with amines using thiol-Michael addition “click” chemistry

T. H. Ho, M. Levere, J. Soutif, V. Montembault, S. Pascual and L. Fontaine, Polym. Chem., 2011, 2, 1258 DOI: 10.1039/C1PY00071C

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