Interactions between the Surface of Clay Minerals and Functional Dyes

Abstract

Clay minerals are commonly used industrial materials. On the other hand, they are unique and attractive materials form the viewpoint of science, because they have very flat surface and densityvariable anionic charges. Clay minerals-functional organic dye complexes are suitable model for the investigations on the interaction between inorganic surface and organic guest molecules, which are important subject in the field of surface sciences. Recently, we found out that the adsorption density and molecular orientation of porphyrin dye on the clay surface can be controlled. In this paper, the detailed adsorption behavior of porphyrin dyes on the clay surface is described.