Sequence Control of π-Electron Systems

Abstract

In this chapter, examples of the sequence control of π-electron systems, recently conducted by the author and coworkers, are briefly reviewed. The concept can cover diverse research topics, e.g., design of organic semiconductors, switching of spin–spin interactions, construction of molecular switches, etc. Particularly highlighted are (1) the molecular design strategies to direct the spontaneous formation of desired supramolecular nanostructures such as columnar assemblies for liquid crystallization and heterojunctions for ambipolar photoconductions and (2) novel synthetic methodologies to allow the access to complex but well-defined structures which otherwise are inaccessible via conventional methodologies.