Issue 2, 2013
From the journal:

Polymer Chemistry

Synthesis of block copolymersvia the combination of RAFT and a macromolecular azo coupling reaction†

Yaning He,*a   Wei He,a   Dan Liu,a   Tonghan Gu,a   Renbo Weia  and  Xiaogong Wanga  

* Corresponding authors

a Department of Chemical Engineering, Laboratory for Advanced Materials, Tsinghua University, Beijing, P. R. China
E-mail: heyaning@mail.tsinghua.edu.cn
Fax: +86-10-62781003
Tel: +86-10-62784561

Abstract

We report a novel modular strategy for the synthesis of block copolymers via the combination of a macromolecular azo coupling reaction and a reversible addition fragmentation chain transfer (RAFT) polymerization method. One block, with a terminus suitable for an azo coupling reaction, was obtained by RAFT polymerization using a synthesized chain transfer agent (CTA) with the designed functional group. The other block, with a diazonium salt terminus, was obtained by the diazotization of aniline-functionalized PEG, which was prepared by a nucleophilic substitution reaction between the synthesized tosylate ended mPEG and p-aminobenzoic acid. The macromolecular azo coupling reaction between the above two polymer blocks was carried out in a polar organic solvent such as DMF under extremely mild conditions. Block copolymers with well-defined structures can be efficiently prepared through this approach.

Graphical abstract: Synthesis of block copolymers via the combination of RAFT and a macromolecular azo coupling reaction

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Article information

DOI
https://doi.org/10.1039/C2PY20653F
Article type
Paper
Submitted
16 Aug 2012
Accepted
28 Aug 2012
First published
29 Aug 2012

Polym. Chem., 2013,4, 402-406

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Synthesis of block copolymers via the combination of RAFT and a macromolecular azo coupling reaction

Y. He, W. He, D. Liu, T. Gu, R. Wei and X. Wang, Polym. Chem., 2013, 4, 402 DOI: 10.1039/C2PY20653F

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