Self-oscillating soluble-insoluble changes of a polymer chain including an oxidizing agent induced by the Belousov-Zhabotinsky reaction.
A new type of self-oscillating polymer was prepared by utilizing the Belousov-Zhabotinsky reaction. In this study, capture sites with a positive charge for an oxidizing agent as a counterion were incorporated into the copolymer of N-isopropylacrylamide and the ruthenium complex as a catalyst. Soluble-insoluble self-oscillation of the polymer was first achieved without adding an oxidizing agent. The effect of temperature on the self-oscillating behavior was investigated. It was clarified that the polymer had two advantageous characteristics because of the higher LCST; one is to enable self-oscillation around body temperature, and the other is to cause the oscillation for a longer time without intermolecular aggregation among the polymer chains in the reduced state. This achievement of self-oscillation of polymer chains including an oxidizing agent may lead to their practical use under oxidant-free conditions.
Hara
Yusuke
Y
Department of Materials Engineering, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Sakai
Takamasa
T
Maeda
Shingo
S
Hashimoto
Shuji
S
Yoshida
Ryo
R
D000178:Acrylamides / Q000737:chemistry; D000643:Ammonium Chloride / Q000737:chemistry; D002384:Catalysis; D006358:Hot Temperature; D046911:Macromolecular Substances / Q000737:chemistry; D008689:Methacrylates / Q000737:chemistry; D015394:Molecular Structure; D016877:Oxidants / Q000737:chemistry*; D010084:Oxidation-Reduction; D011108:Polymers / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry; D012995:Solubility
D000178:Acrylamides; D046911:Macromolecular Substances; D008689:Methacrylates; D016877:Oxidants; D011108:Polymers; C103923:poly(N-isopropylacrylamide-N-n-propylacrylamide); D000643:Ammonium Chloride; D012428:Ruthenium; C400723:MAPTAC