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Dual Temperature and Thiol‐Responsive POEOMA‐Multisegmented Polydisulfides: Synthesis and Thermoresponsive Properties
Author(s) -
Zhang Qian,
Noh Seung Man,
Nam Joon Hyun,
Jung Hyun Wook,
Park Jong Myung,
Oh Jung Kwon
Publication year - 2012
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201200289
Subject(s) - aminolysis , raft , thiol , disulfide bond , polymer chemistry , copolymer , polymerization , redox , chemistry , reversible addition−fragmentation chain transfer polymerization , materials science , organic chemistry , polymer , radical polymerization , catalysis , biochemistry
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.