Introduction of peripheral nitrogen atoms to cyclo-meta-phenylenes

Abstract

Cyclo-meta-phenylenes doped with nitrogen atoms at the periphery were designed and synthesized. The syntheses of the macrocyclic structures were achieved with one-pot Suzuki–Miyaura coupling to arrange phenylene rings and pyridinylene rings in an alternating fashion. Analyses with UV–vis spectroscopy showed changes in the photophysical properties with nitrogen doping, and X-ray crystallographic analyses experimentally revealed the presence of biased charges on the peripheral nitrogen atoms.

Keywords

• cross coupling
• macrocycles
• nitrogen doping
• uv–vis spectroscopy
• x-ray charge density analysis