Analysis of charge distribution on organic cations adsorbed clay surface

层状材料结构有序，层间环境多变。讨论了阳离子染料对阴离子粘土表面、铌酸盐、LDH等的吸附行为。粘土和LDH具有平坦的表面，铌酸盐具有坚固性和复杂的层间结构。电荷的位置、大小、程度和物理性质随材料的不同而不同。我们建立了晶体结构模型，并通过分子轨道计算进行了研究。二、三、四阳离子的卟啉/合成粘土配合物的形成是通过粘土表面卟啉分子中带电位点之间距离的大小匹配（“大小匹配规则”）来合理化的。当使用中间层作为化学反应场时，由于分散，很难用作溶液，即对光的吸附率低。为了减少色散，我们制作了光学透明的纳米层薄膜。采用两步法将多氟阳离子偶氮苯衍生物引入层状铌酸盐中间层I，并以插层化合物紫紫甲基为前驱体成功合成光响应多层螺旋纳米管。通过光照射，我们观察了反式到顺式和顺式到反式的转化。

The layerd material has a ordered structure and environment of the interlayer is variety. We discussed about the adsorption behavior of the cation dye to the anion clay surface, niobate, LDH etc. The clay and the LDH have the flat surfaces, niobate has ruggedness and complex interlayer structures. The charge position, size, extent and physical properties are different with each materials.We made the models of the crystal structure and studied by the molecular orbital calculations. The formation of in di-, tri-, tetra-catioic charged porphyrin/synthetic clay complexes was rationalized by a size-matching of distances between the charged sites in the porphyrin molecule on the clay surface ('size-matching rule').When using the interlayer as a chemical reaction field, it is difficult to use as the solution, that is low adsorption rate of light, because of the dispersion. To decrease the dispersion, we made the optically transparent nanolayered thin films. The first successful synthesis of photo-responsive multilayer spiral nanotubes by the introduction of polyfluorinate cationic azobenzene derivative into layered niobate interlayer I by a two-step guest-guest exchange method using the intercalation compound methyl viologen as precursor. By the light irradiation, we observed the trans to cis and the cis to trans conversion.