Nano-structure formation and function control of colloidal materials due to strong magnetic fields

强磁场作用下胶体材料纳米结构的形成和功能控制

基本信息

批准号：
15085205
负责人：
OZEKI Sumio
金额：
$ 24.96万
依托单位：
Shinshu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

Colloid-dimensional assemblies comprising weak magnetic systems, such as hydrogels, lipid vesicles, coacervates, triblockpolymer/silicate hybrids, mesoporous silicas, and organometal complex, were organized and functionalized by magnetic fields. Potential ability of magnetic fields were investigated from the viewpoint of magnetically responsive structures in porous solids and biological materials.Self-organization of various structures due to magnetic fields and magnetic-field sensitization of functions due to additives with magnetic anisotropy were examined. This preliminary success led to a new, simple method to control anisotropic nono-textures and nano-structures based on their magnetism. For examples, two kinds of new cupper-pyrazine complexes were prepared from the same reactants solution and conditions, besides using magnetic fields. This results in magnetic anisotropy originated from crystal structure. Moreover, concentration fluctuation in liquid-liquid mixtures was controlled … More under magnetic force fields produced by magnetic field gradient, and detected by dynamic and static light scattering. Metal structure formation associated with non-linear chemical reaction was examined under magnetic fields. Volume phase transition gels and vesicles were deformed by external magnetic fields and the magnetic deformation was enhanced by the addition of magneitically anisotropic molecules.The magnetoadsorptivity of H_2 onto various carbons including a single wall carbon nanotube depended markedly on temperature. H_2 vapor was adsorbed much larger than the supercritical gas by magnetic field. In the vapor region, the pressure change Ap depends on T^<-1.4>. On the other hands, in the supercritical region, Δp depends on ( T-Tc)^<-0.09> below 40K and (T-Tc)^<-0.34> in the range 40-303K, suggesting two magnetic states of supercritical states in the micropores. Based on the results, new tunneling reaction systems were constructed using adsorption systems comprising hydrogen and carbons, and the tunneling reactions were controlled by magnetic fields.Whether or not there is so-called magnetized water was examind. Very elaborate investigation showed that pure water was not "magnetized", but the water exposed to oxygen was "magnetized" by magnetic treatment. The degree of "magnetization" of water can be quantitatively and easily evaluated by the contact angle. Less

胶质二维组件完成了弱磁系统，例如水凝胶，脂质蔬菜，塞孔，三孔聚合物/硅酸盐杂种，介孔硅酮和有机络合物，并通过磁场进行了功能化。从多孔固体和生物材料中的磁响应结构的角度研究了磁场的潜在能力。检查了由于磁场和磁性各向异性引起的磁场敏感性引起的各种结构的自组织。这种初步的成功导致了一种新的简单方法，可以根据其磁性控制各向异性的非质量纹理和纳米结构。例如，除了使用磁场外，还从相同的反应物溶液和条件下制备了两种新的Cupper-pyrazine配合物。这导致磁各向异性是由晶体结构原来的。此外，控制液态液混合物中的浓度波动是在磁场梯度产生的磁力场下控制的，并通过动态和静态光散射检测。在磁场下检查了与非线性化学反应相关的金属结构形成。体积相变凝胶和蔬菜被外部磁场变形，并通过添加磁性分子来增强磁化变形。H_2在各种碳中的磁充氧性在包括单个壁碳纳米管上依赖温度。 H_2蒸气被磁场的吸附比超临界气体大得多。在蒸气区域，压力变化AP取决于T^<-1.4>。另一方面，在超临界区域中，ΔP取决于（t-tc）^<-0.09>低于40k，而（t-tc）^<-0.34>在40-303K范围内，表明微孔中超临界状态的两个磁性状态。基于结果，使用添加吸附系统构建了新的隧道反应系统，并通过磁场控制隧道反应。是否检查了所谓的磁性水。非常详尽的研究表明，纯水未被“磁化”，但是暴露于氧气的水是通过磁处理“磁化”的。水的“磁化”程度可以通过接触角来定量，易于评估。较少的