Dual temperature and thiol-responsive POEOMA-multisegmented polydisulfides: Synthesis and thermoresponsive properties

Qian Zhang, Seung Man Noh, Joon Hyun Nam, Hyun Wook Jung, Jong Myung Park, Jung Kwon Oh

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

New thermoresponsive polydisulfides of POEOMA multiblocks linked with disulfide bonds having redox-responsive properties are reported. These POEOMA-multisegmented polydisulfides were synthesized by a new method employing a combined RAFT/aminolysis and reversible thiol-disulfide redox reaction that centers on the synthesis of new disulfide-labeled difunctional RAFT agent. RAFT polymerization proceeded in living fashion, yielding well-defined POEOMA copolymers with middle disulfides and terminal RAFT species. They were then used as precursors for thiol-disulfide polyexchange induced by aminolysis and reductive reaction followed by oxidation: these polydisulfides with different molecular weights and end groups ex hibited tunable thermoresponsive properties and thiol-responsive degradation.

Original languageEnglish
Pages (from-to)1528-1534
Number of pages7
JournalMacromolecular Rapid Communications
Volume33
Issue number18
DOIs
Publication statusPublished - 2012 Sep 26

Keywords

  • LCST
  • RAFT
  • aminolysis
  • disulfide-thiol exchange
  • polydisulfides
  • stimuli-sensitive polymers

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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