Construction of an autonomous supramolecular system involved with hierarchy and its nonlinear dynamics.

涉及层次结构及其非线性动力学的自主超分子系统的构建。

• 批准号: 15540377
• 负责人: MIYAKAWA Kenji
• 金额: $ 2.37万
• 依托单位: Fukuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15540377/
• 关键词: self-organization; Belousov-Zhabotinsky reaction; supramolecule; stochastic resonance; 非平衡

The catalyst ruthenium (II) tris-(2,2'-bipyridine)(Ru(bpy)_3) for Belousov-Zhabotinsky (BZ) reaction was covalently bonded to poly (N-isopropyl acrylamide) (PNIPA). When the poly(PNIPA+-co-Ru(bpy)_3) chain was dissolved into the BZ solution, the periodical coil-globule oscillation occurred. For the purpose to construct a hierarchical structure, we have tried to form microparticles based on poly(PNIPA+-co-Ru(bpy)3) in the BZ solution by the irradiation of an IR laser beam. Then we have observed the autonomous volume oscillation of the, microparticle (diameter【approximately equal】5μm) formed. Furthermore, we have prepared the water-in-oil microemulsion consisting of AOT, octane, and BZ reaction solution as active elements involved an autonomous function. We have provided the difference between the diffusion constant of the activator and that of the inhibitor by controlling external parameters, such as temperature, ionic strength, and volume fraction of droplets. As a result, we have foun … More d various reaction patterns such as the cluster wave and the non-annihilation wave.We have investigated the effect of hierarchization on self-organization through the stochastic resonance in the supramolecular system consisting of many excitable elements. We have used a one-dimensional array of excitable elements in which Belousov-Zhabotinsky (BZ) reaction was localized. We have found that (1) the degree of coherence of noise-induced oscillation is increased with increasing the number of elements, (2) phase locking between largely separated elements not interacting directly with each other is achieved via irregular oscillations of elements interposed between them, and (3) phase locking in a one-dimensional array of excitable elements is induced via coherence resonance of the first element. For a numerical simulation we have approximated the present system as a one-dimensional system consisting of four interacting excitable elements separated by an inactive area, i.e., a diffusion area. Experimental observations have been approximately reproduced in the numerical simulation with the three-variable Oregonator reaction-diffusion model modified to take into account the effects of an external electric noise. Less

将Ru(II)三(2，2‘-联吡啶)(Ru(Bpy)_3)与聚N-异丙基丙烯酰胺(PNIPA)共价键合，用于Belousov-Zhabotinsky(BZ)反应。当聚(PNIPA+-co-Ru(Bpy)_3)链溶解到BZ溶液中时，发生了周期性的线圈-球状振荡。为了构建层次化结构，我们尝试用红外激光在BZ溶液中形成基于聚(PNIPA+-co-Ru(Bpy)3)的微粒子。然后我们观察到了形成的微粒子(直径[大约等于]5μm)的自主体积振荡。此外，我们还制备了由AOT、辛烷和BZ反应溶液组成的具有自主功能的活性元素的油包水微乳液。通过控制温度、离子强度和液滴体积分数等外部参数，给出了活化剂和缓蚀剂的扩散常数之差。因此，我们有了Foun…我们通过多个可激发元素组成的超分子体系的随机共振，研究了层次化对自组织的影响。我们使用了一维可激发元阵列，其中Belousov-Zhabotinsky(BZ)反应是局域化的。我们发现：(1)噪声诱发振荡的相干度随着单元数目的增加而增加，(2)大间隔单元之间不直接相互作用的单元之间的锁相是通过插入其间的单元的不规则振荡来实现的，(3)一维可激发单元阵列中的锁相是通过第一个单元的相干共振来实现的。对于数值模拟，我们将本系统近似为一个由四个相互作用的可激发元素组成的一维系统，这些元素被一个非活动区域，即扩散区域隔开。实验观测结果在数值模拟中得到了近似的重现，修正后的三变量Oregonator反应扩散模型考虑了外部电噪声的影响。较少

项目成果

Noise-induced spatiotemporal dynamics in a linear array of excitable chemical oscillators

可激发化学振荡器线性阵列中噪声引起的时空动力学

• 发表时间: 2005
• 期刊: Phys.Rev.E (in press)
• 作者: T.Akimoto;Y.Aizawa;G.Prumper;F.Shimojo;H.K.Lee et al.;Kenji Miyakawa;G.Prumper;Kenji Miyakawa
• 通讯作者: Kenji Miyakawa

Kenji Miyakawa: "Dynamics of a stochastic oscillator in an excitable chemical reaction system"Phys.Rev.E. 67. 0662061-0562064 (2003)

Kenji Miyakawa：“可激发化学反应系统中随机振荡器的动力学”Phys.Rev.E。

Raman study of a liquid crystalline gel consisting of photochromic 4-methyl-N-(4-n-heptyloxysalicylidene)aniline and a gelling agent (R,R')-1,2-bis(dodecanoylamino)cyclohexane

由光致变色 4-甲基-N-(4-正庚氧基水杨基)苯胺和胶凝剂 (R,R)-1,2-双(十二烷酰氨基)环己烷组成的液晶凝胶的拉曼研究

• 发表时间: 2005
• 期刊: Liquid Crystals (in press)
• 作者: S.Shinkai;Y.Aizawa;Kenji Miyakawa
• 通讯作者: Kenji Miyakawa

Synchronization of Chemical Waves in Diffusively Coupled Self-Oscillation Gels

扩散耦合自振荡凝胶中化学波的同步

• 发表时间: 2003
• 期刊: J. Phys. Soc. Jpn. 72
• 作者: H.Yamasaki;Y.Natsume;A.Terai;K.Nakamura;夏目雄平(分担執筆);Masako Ohtaki;Kenji Miyakawa;Fumitaka Sakamoto
• 通讯作者: Fumitaka Sakamoto

Fumitaka Sakamoto: "Synchronization of Chemical Waves in Diffusively Coupled Self-Oscillation Gels"J.Phys.Soc.Jpn.. 72・9. 2173-2176 (2003)

坂本文隆：“扩散耦合自振荡凝胶中的化学波同步”J.Phys.Soc.Jpn.. 72・9（2003）