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Terpyridine-Terminated Homo and Diblock Copolymer LEGO Units by Nitroxide-Mediated Radical Polymerization

✍ Scribed by Christina Ott; Bas G. G. Lohmeijer; Daan Wouters; Ulrich S. Schubert

Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 302 KB
Volume: 207
Category: Article
ISSN: 1022-1352
DOI: 10.1002/macp.200600269

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✦ Synopsis

Abstract

Summary: Novel block copolymers were synthesized in a controlled fashion by nitroxide‐mediated radical polymerization starting from a terpyridine‐modified alkoxyamine. An important feature for controlling the efficiency of the polymerization is the presence of excess nitroxide, responsible for the initial rate of deactivation, which eventually leads to a decrease of the polydispersity indices of the desired block copolymer. The materials obtained were characterized by means of ^1^H NMR, UV‐vis spectroscopy, and GPC. The complexation of the terpyridine ligands resulted in the formation of A‐B‐[Ru]‐C, A‐B‐[Ru]‐B‐A, and A‐B‐[Fe]‐B‐A metallo‐supramolecular block copolymers.

Telechelic polymers bearing a terpyridine end‐group at the α‐position and a nitroxide at the ω‐position were prepared in a living fashion by nitroxide‐mediated polymerization.

magnified imageTelechelic polymers bearing a terpyridine end‐group at the α‐position and a nitroxide at the ω‐position were prepared in a living fashion by nitroxide‐mediated polymerization.

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