Design Constraints for Organic Metals and Superconductors. In: Metzger RM, Day P, Papavassiliou GC, editors. Lower-Dimensional Systems and Molecular Electronics. Boston: Springer US; 1990. pp. 1-22. [DOI: 10.1007/978-1-4899-2088-1_1]

Frontiers of organic conductors and superconductors

We review the development of conductive organic molecular assemblies including organic metals, superconductors, single component conductors, conductive films, conductors with a switching function, and new spin state (quantum spin liquid state). We emphasize the importance of the ionicity phase diagram for a variety of charge transfer systems to provide a strategy for the development of functional organic solids (Mott insulator, semiconductor, superconductor, metal, complex isomer, neutral-ionic system, alignment of chemical potentials, etc.). For organic (super)conductors, the electronic dimensionality of the solids is a key parameter and can be designed based on the self-aggregation ability of a molecule. We present characteristic structural and physical properties of organic superconductors.