Tuning Emission Properties by Dye Encapsulation into Layered Silicates

This chapter describes the emission behavior of molecules on the surface of layered materials. Emission properties of molecules depend on their surrounding environment. Even in homogeneous environments, this emission behavior depends on solvent effects such as viscosity, permittivity, polarity, and so on. While the chemical reaction media provided by layered materials is the analog of solvent effects, the effect of layered materials induces important changes in the properties of the molecule. For example, the emission intensity could be enhanced 100 times by the complex formation with layered materials. Despite the drastic effect of layered materials on the photochemical properties of molecules, the use of layered materials is limited due to some factors. One of these factors is the complicated complex formation behavior of molecules on layered materials. This sometimes includes segregation and aggregation that induce changes in photochemical properties. In recent decades, the intrinsic photochemical properties of molecules on layered materials were clarified by the progress in techniques to prepare complexes between molecules and layered materials. These examples will be described in this chapter.