[<i>n</i>]Cyclo‐2,7‐naphthylenes: Synthesis and Isolation of Macrocyclic Aromatic Hydrocarbons having Bipolar Carrier Transport Ability

Abstract

Mothball macrocycles: Naphthalene has been coupled to form macrocylic oligomers composed of five, six, and seven naphthalene units (see picture). Thermally stable macrocycles bearing 50, 60, or 70 π electrons within the hydrocarbon structure form columnar assemblies in crystals and serve as bipolar carrier transport materials in organic light-emitting diode devices.