Switching the Belousov-Zhabotinsky reaction with a Strong-Acid-Free Gel
Switching the Belousov-Zhabotinsky reaction with a Strong-Acid-Free Gel
复制标题
用无强酸凝胶切换 Belousov-Zhabotinsky 反应
DOI：
10.1021/jp410915p
复制
发表时间：
2014
期刊：
影响因子：
3.3
通讯作者：
H. Mayama
中科院分区：
文献类型：
--
作者：
Y. Hara;Y. Yamaguchi;H. Mayama
在本研究中，开发了一种新型的凝胶与半互穿聚合物网络（半-IPN）进行Belousov-Zhabotinsky（BZ）反应，而不添加强酸（HNO 3或H2SO 4）。在这些条件下，BZ底物，溴酸钠（NaBrO 3）和丙二酸（MA）的所需浓度高于在正常BZ反应条件下，包括添加强酸。BZ与新型凝胶（半互穿网络BZ凝胶）的反应周期随着NaBrO 3和MA浓度的增加而减少。此外，半互穿网络BZ凝胶的连接到一个传统的BZ凝胶促进在后者通过传播的中间体从前者到后者的反应。当常规BZ凝胶与半IPN BZ凝胶断开时，BZ反应停止。这些结果表明，常规BZ凝胶中的BZ反应经历了开关切换，由其与半IPN BZ凝胶的连接控制。这种开关机制在没有强酸的情况下控制致动器和机器人将是有价值的。
In the present study, a novel gel with a semi-interpenetrating polymer network (semi-IPN) that undergo the Belousov–Zhabotinsky (BZ) reaction without the addition of a strong acid (HNO3or H2SO4) was developed. The required concentrations of the BZ substrates, sodium bromate (NaBrO3) and malonic acid (MA), under these conditions were higher than under the normal BZ reaction conditions, involving the addition of a strong acid. The period of the BZ reaction with the novel gel (semi-IPN BZ gel) decreased with increasing concentrations of NaBrO3and MA. Moreover, the connection of the semi-IPN BZ gel to a conventional BZ gel facilitated the reaction in the latter through the propagation of the intermediates from the former to the latter. The BZ reaction stopped when the conventional BZ gel was disconnected from the semi-IPN BZ gel. These results demonstrate that the BZ reaction in the conventional BZ gel underwent on–off switching, controlled by its attachment to the semi-IPN BZ gel. This on–off switching mechanism would be valuable in controlling actuators and robots without strong acids.