Functional organic materials constitute a combination of diverse fields that range from carbon nanotubes to self-assembled polymers but encompass also nonlinear optical effects, the organic solid state and the construction of chiral materials. We, as the two Editors, have tried to put together an overview over the development of modern functional organic materials in this book. The content is divided into four different sections, which deal with 3-D carbon-rich systems (I), strategic advances in synthesis (II), molecular muscles, switches and electronics (III) and the interplay of electronic interaction and structure (IV). Renowned experts in each field give an introduction to/overview of each of their selected thematic fields, making an easy entry for readers into the respective field. The book is intended both for active scientists working in the field of organic materials, in academe and in industry, and also for graduate students who are interested in this area.