Thermoresponsive and Redox Behaviors of Poly(N-isopropylacrylamide)-Based Block Copolymers Having TEMPO Groups as Their Side Chains
Joint Authors
Ishifune, Manabu
Uemukai, Toru
Hioki, Tomoya
Source
International Journal of Polymer Science
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-06-27
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Thermoresponsive and redox-active block copolymers having 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) moieties have been synthesized by using the reversible addition-fragmentation chain transfer (RAFT) polymerization technique.
N-Isopropylacrylamide (NIPAAm) and 2,2,6,6-tetramethylpiperidyl methacrylate (TEMPMA) monomers were copolymerized stepwise under RAFT polymerization conditions to afford the thermoresponsive block copolymers, PNIPAAm-block-PTEMPMA and PNIPAAm-block-PTEMPMA-block-PNIPAAm.
Oxidation of tetramethylpiperidine groups in the copolymers successfully afforded the corresponding TEMPO-containing block copolymers.
The resulting triblock copolymer was found to be thermoresponsive showing lower critical solution temperature (LCST) at 34∘C in its aqueous solution.
Redox behavior of the resulting copolymer was observed by cyclic voltammetry.
The potential of anodic current peak changed below and above the LCST of the block copolymer.
These results indicate that the phase transition of thermoresponsive polymer influences the redox potential of TEMPO moieties.
American Psychological Association (APA)
Uemukai, Toru& Hioki, Tomoya& Ishifune, Manabu. 2013. Thermoresponsive and Redox Behaviors of Poly(N-isopropylacrylamide)-Based Block Copolymers Having TEMPO Groups as Their Side Chains. International Journal of Polymer Science،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-453664
Modern Language Association (MLA)
Uemukai, Toru…[et al.]. Thermoresponsive and Redox Behaviors of Poly(N-isopropylacrylamide)-Based Block Copolymers Having TEMPO Groups as Their Side Chains. International Journal of Polymer Science No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-453664
American Medical Association (AMA)
Uemukai, Toru& Hioki, Tomoya& Ishifune, Manabu. Thermoresponsive and Redox Behaviors of Poly(N-isopropylacrylamide)-Based Block Copolymers Having TEMPO Groups as Their Side Chains. International Journal of Polymer Science. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-453664
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-453664