Molecular Design and Functional Control of Novel Self-Oscillating Polymers
If we could realize an autonomous polymer system driven under biological conditions by a tailor-made molecular design, human beings could create unprecedented biomimetic functions and materials such as heartbeats, autonomous peristaltic pumps, etc. In order to achieve this objective, we have investi...
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doaj-0840acb3012246b995ba1b1f6720bb6b2020-11-25T01:37:59ZengMDPI AGInternational Journal of Molecular Sciences1422-00672010-02-0111270471810.3390/ijms11020704Molecular Design and Functional Control of Novel Self-Oscillating PolymersRyo YoshidaShuji HashimotoShingo MaedaYusuke HaraIf we could realize an autonomous polymer system driven under biological conditions by a tailor-made molecular design, human beings could create unprecedented biomimetic functions and materials such as heartbeats, autonomous peristaltic pumps, etc. In order to achieve this objective, we have investigated the molecular design of such a polymer system. As a result, we were the first to demonstrate a self-oscillating polymer system driven in a solution where only malonic acid existed, which could convert the chemical energy of the Belousov-Zhabotinsky (BZ) reaction into a change in the conformation of the polymer chain. To cause the self-oscillation in solution, we have attempted to construct a built-in system where the required BZ system substrates other than the organic acid are incorporated into the polymer itself. That is, the novel polymer chain incorporated the metal catalyst of the BZ reaction, a pH-control site and an oxidant supply site at the same time. As a result of introducing the pH control and oxidant supply sites into the conventional-type self-oscillating polymer chain, the novel polymer chain caused aggregation-disaggregation self-oscillations in the solution. We clarified that the period of the self-oscillation of the novel self-oscillating polymer chain was proportional to the concentration of the malonic acid. Therefore, the concentration of the malonic acid can be determined by measuring the period of the novel self-oscillating polymer solution. In this review, we introduce the detailed molecular design of the novel self-oscillating polymer chain and its self-oscillating behavior. Moreover, we report an autonomous self-oscillating polymer gel actuator that causes a bending-stretching motion under the constant conditions. http://www.mdpi.com/1422-0067/11/2/704/self-oscillationpolymer chainBZ reactiongelpolymer actuator |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ryo Yoshida Shuji Hashimoto Shingo Maeda Yusuke Hara |
spellingShingle |
Ryo Yoshida Shuji Hashimoto Shingo Maeda Yusuke Hara Molecular Design and Functional Control of Novel Self-Oscillating Polymers International Journal of Molecular Sciences self-oscillation polymer chain BZ reaction gel polymer actuator |
author_facet |
Ryo Yoshida Shuji Hashimoto Shingo Maeda Yusuke Hara |
author_sort |
Ryo Yoshida |
title |
Molecular Design and Functional Control of Novel Self-Oscillating Polymers |
title_short |
Molecular Design and Functional Control of Novel Self-Oscillating Polymers |
title_full |
Molecular Design and Functional Control of Novel Self-Oscillating Polymers |
title_fullStr |
Molecular Design and Functional Control of Novel Self-Oscillating Polymers |
title_full_unstemmed |
Molecular Design and Functional Control of Novel Self-Oscillating Polymers |
title_sort |
molecular design and functional control of novel self-oscillating polymers |
publisher |
MDPI AG |
series |
International Journal of Molecular Sciences |
issn |
1422-0067 |
publishDate |
2010-02-01 |
description |
If we could realize an autonomous polymer system driven under biological conditions by a tailor-made molecular design, human beings could create unprecedented biomimetic functions and materials such as heartbeats, autonomous peristaltic pumps, etc. In order to achieve this objective, we have investigated the molecular design of such a polymer system. As a result, we were the first to demonstrate a self-oscillating polymer system driven in a solution where only malonic acid existed, which could convert the chemical energy of the Belousov-Zhabotinsky (BZ) reaction into a change in the conformation of the polymer chain. To cause the self-oscillation in solution, we have attempted to construct a built-in system where the required BZ system substrates other than the organic acid are incorporated into the polymer itself. That is, the novel polymer chain incorporated the metal catalyst of the BZ reaction, a pH-control site and an oxidant supply site at the same time. As a result of introducing the pH control and oxidant supply sites into the conventional-type self-oscillating polymer chain, the novel polymer chain caused aggregation-disaggregation self-oscillations in the solution. We clarified that the period of the self-oscillation of the novel self-oscillating polymer chain was proportional to the concentration of the malonic acid. Therefore, the concentration of the malonic acid can be determined by measuring the period of the novel self-oscillating polymer solution. In this review, we introduce the detailed molecular design of the novel self-oscillating polymer chain and its self-oscillating behavior. Moreover, we report an autonomous self-oscillating polymer gel actuator that causes a bending-stretching motion under the constant conditions. |
topic |
self-oscillation polymer chain BZ reaction gel polymer actuator |
url |
http://www.mdpi.com/1422-0067/11/2/704/ |
work_keys_str_mv |
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