Functional Dye Materials Composed of Clay Nano-sheet

Abstract

We have been investigating complexes composed of nanolayered materials with anionic charges such as clay nanosheets and dye molecules such as cationic porphyrins. It was found that the structure of dye assembly on the layered materials can be effectively controlled by the use of electrostatic host-guest interaction. The mechanism to control these structural factors has been discussed and was established as a sizematching effect. Unique photochemical reactions such as energy transfer through the use of this methodology have been examined. Control of the molecular orientation angle is found to be useful in regulating the energy-transfer efficiency and in preparing photofunctional materials exhibiting solvatochromic behavior.