%0 Journal Article
%T Autonomous Oscillation of Polymer Chains Induced by the Belousov¨CZhabotinsky Reaction
%A Yusuke Hara
%A Yoshiko Takenaka
%J Sensors
%D 2014
%I MDPI AG
%R 10.3390/s140101497
%X We investigated the self-oscillating behaviors of two types of polymer chains induced by the Belousov¨CZhabotinsky (BZ) reaction. One consisted of N-isopropylacrylamide (NIPAAm) and the Ru catalyst of the BZ reaction, and the other consisted of NIPAAm, the Ru catalyst, and acrylamide-2-methylpropanesulfonic acid (AMPS) with a negatively charged domain as a solubility control site. A comparison of the two types of self-oscillation systems showed that the anionic AMPS portion of the polymer chain significantly affected the self-oscillating behavior under strongly acidic condition. The periods of self-oscillation for the two types of self-oscillating polymer chains were investigated by changing the initial concentrations of the three BZ substrates and the temperature. As a result, it was demonstrated that the period of self-oscillation could be controlled by the concentration of the BZ substrates and the temperature. Furthermore, the activation energies of the two types of the self-oscillating polymer chains gave similar values as normal BZ reactions, i.e., not including the self-oscillating polymer system with a Ru moiety. In addition, it was clarified the activation energy was hardly affected by the initial concentration of the three BZ substrates.
%K self-oscillation
%K polymer chain
%K BZ reaction
%K molecular robot
%U http://www.mdpi.com/1424-8220/14/1/1497