Molecular Design and Functional Control of a Novel Self-Oscillating Polymer Chain and Analysis of Viscosity Self-Oscillation
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- HARA Yusuke
- Department of Applied Physics, Graduate School of Science and Engineering, Waseda University
Bibliographic Information
- Other Title
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- 生体環境下で駆動する新規自励振動型高分子の創製と自励粘性振動の解析
Abstract
In our previous study, we succeeded to construct a self-oscillating polymer system that is composed of poly(N-isopropylacrylamide) (poly(NIPAAm)) covalently bound to [Ru(bipyridine)2(4-vinyl-4′-methyl bipyridine)] (Ru(bpy)3). However, the operating conditions were limited to non-physiological environments in the presence of strong acids and oxidants. Therefore, in order to expand the application of those gels to the biomedical field, we attempted the construction of a novel self-oscillating polymer that can cause the self-oscillation under physiological conditions. In this study, we synthesized a novel quarternary copolymer which included both pH-control and oxidant-supplying sites in the poly(NIPAAm-co-Ru(bpy)3) chain. As a result, we first succeeded in causing the self-oscillation under biological conditions in the presence of an organic acid (malonic acid) existed. In addition, we demonstrated that an on-off switching of the self-oscillation can be controlled by temperature. Moreover, by utilizing a highly concentrated polymer solution, we succeeded in causing a viscosity self-oscillation for the first time.<br>
Journal
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- KOBUNSHI RONBUNSHU
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KOBUNSHI RONBUNSHU 66 (8), 289-297, 2009
The Society of Polymer Science, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282681501116928
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- NII Article ID
- 130004489227
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- ISSN
- 18815685
- 03862186
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed