EXTENDED PI-SYSTEMS IN CONJUGATED OLIGOMERS AND POLYMERS - THE LONGER, THE BETTER

Homologous series of extended oligomeric and polymeric pi-chains with arylene and arylenevinylene repeating units are investigated as a function of the chain length. Depending upon the nature of the building blocks and the mode of linking the chain-length dependance leads to fundamentally different chemical and physical consequences. An increase in dimensionality appears as a crucial step in the design and synthesis of molecular and supramolecular structures.