Clickable Poly(2-Oxazoline)s as Versatile Building Blocks
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Fijten, Martin W. M.; Haensch, Claudia; van Lankvelt, Bart M.; Hoogenboom, Richard; Schubert, Ulrich S.
- Abstract:
- Cationic ring-opening polymerization techniques are very sensitive to nucleophiles, which
make it difficult to introduce different functional groups into these polymers. Clickable poly(2-
oxazoline)s were synthesized and functionalization was performed by the copper(I)-catalyzed
1,3-dipolar cycloaddition between alkynes and azides. Therefore, an alkyne function is
introduced into the polymer backbone by utilizing
alkyne toluene-4-sulfonates as an initiator. The
polymerization kinetics were investigated for
four different 2-substituted-2-oxazolines and
well-defined acetylene-functionalized poly(2-
ethyl-2-oxazoline)s with different lengths were
synthesized having 100% functionality. One of
these polymers was used to demonstrate its applicability
in the azide-alkyne click reaction by reaction
with different azide compounds.
- Year:
- 2008
- Type of Publication:
- Article
- Journal:
- Macromolecular Chemistry and Physics
- Volume:
- 209
- Pages:
- 1887 - 1895