Applications of Supermolecules — Molecular Devices and Nanotechnology

Abstract

Up to now, we have discussed the formation of various molecular structures and assemblies-supermolecules-via supramolecular concepts. In this chapter, we move away from supermolecule preparation and consider practical applications of supermolecules. Approaches to functionalizing supramolecular systems are explained as various molecular devices are introduced. Molecular devices are functional materials that are structurally precise down to the molecular level that are constructed using the concepts of supramolecular chemistry. Supermolecules capable of electron conduction and electrical switches (molec-ular electronic devices), supermolecules that respond to light and manipulate photonic information (molecular photonic devices), supermolecules that can be used for information processing and calculations (molecular computer), and supermolecules that move, rotate, and catch targets (molecular machines) are introduced as examples of molecular devices. Well-defined molecular assemblies provide useful devices for direction-controlled information transfer. These examples suggest that supramolecular chemistry will be the main tool used in the development of nanotechnology-technology based on devices with nanoscale features-which is predicted to revolutionize our lives in the near future.