Functionality emergence of single molecule electronics

In these decades organic functional materials have been utilized in daily electronic products like organic light emitting diodes or liquid crystals in cellar phones or televisions. At the present stage organic materials are used as mass materials and the most characteristic properties of them arise from cooperative effects of each molecule. However, if each single molecule has their own specific properties and cooperate in a rational way with each other, they should emerge more sophisticated properties. In this regard, we have been studying electronic or magnetic properties of single or small number of molecules, synthetic route for molecular integrated circuits by a successive coupling of the molecular parts, by self-assembling on surface, and combination with carbon nano-materials. In order to emerge new properties, each molecule units should show non-linear and non-symmetric responses. We have been studying design, synthesis, and measurements of organic molecules which can exhibit such responses in single molecules.