Perylene Bisimide Based Macrocycles: Effective Probes for the Assessment of Conformational Effects on Optical Properties

Conformation-dependent tuning of color: Starting from aryloxy-substituted perylene bisimides two isomeric diagonally (A) and laterally (B) bridged macrocycles were synthesized (see picture) for three different bridge lengths. These isomers comprise different conformational features and can, therefore, be used as molecular probes to deduce the conformational influence on the optical properties of this important class of fluorophores in solution.