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Dual Temperature and Thiol-Responsive POEOMA-Multisegmented Polydisulfides: Synthesis and Thermoresponsive Properties

Authors
Zhang, QianNoh, Seung ManNam, Joon HyunJung, Hyun WookPark, Jong MyungOh, Jung Kwon
Issue Date
26-9월-2012
Publisher
WILEY-V C H VERLAG GMBH
Keywords
aminolysis; disulfide-thiol exchange; LCST; polydisulfides; RAFT; stimuli-sensitive polymers
Citation
MACROMOLECULAR RAPID COMMUNICATIONS, v.33, no.18, pp.1528 - 1534
Indexed
SCIE
SCOPUS
Journal Title
MACROMOLECULAR RAPID COMMUNICATIONS
Volume
33
Number
18
Start Page
1528
End Page
1534
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/107434
DOI
10.1002/marc.201200289
ISSN
1022-1336
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.
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