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Dynamic Covalent Diblock Copolymers Prepared from RAFT Generated Aldehyde and Alkoxyamine End-Functionalized Polymers

Lookup NU author(s): Alex Jackson, Professor David FultonORCiD

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Abstract

Aldehyde- or alkoxyamine-containing trithiocarbonate chain transfer agents were prepared and used to mediate the synthesis of a series of polymers end-functionlized with either aldehyde or alkoxyamines functions, utilizing reversible addition-fragmentation polymerization techniques. Aldehyde end-functionalized polymers were shown to link through reversible oxime bond formation with alkoxyamine end-funtionalized polymers forming diblock copolymers. The dynamic nature of the oxime bond linking these polymer blocks together was demonstrated through a simple exchange reaction with a small molecule alkoxyamine. A diblock copolymer prepared from the self-assembly of an aldehyde end-functionalized polyisoprenc with an alkoxyamine end-functionalized polystyrene was shown to undergo further hierarchical self-assembly into micellar aggregates in DMF. It was shown that the addition of an excess of a small molecule alkoxyamine triggered the disassembly of these micelles.

Publication metadata

Author(s): Jackson AW, Fulton DA

Publication type: Article

Publication status: Published

Journal: Macromolecules

Year: 2010

Volume: 43

Issue: 2

Pages: 1069-1075

Print publication date: 01/01/2010

ISSN (print): 0024-9297

ISSN (electronic): 1520-5835

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/ma902291a

DOI: 10.1021/ma902291a

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