title: Highly luminescent, electron-deficient bora-cyclophanes.
abstract: A highly luminescent conjugated organoboron macrocycle containing six Lewis acidic boron centers was synthesized. Comparison of the optical and electronic properties with those of a hexameric linear oligomer revealed important differences due to delocalization within the highly symmetric cyclic conjugated structure. Exposure of this unique electron-deficient bora-cyclophane to fluoride or cyanide results in amplified fluorescence quenching and can be exploited to switch between an electron-deficient macrocycle and a highly charged, electron-rich borate cycle.
authors: Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, USA.
authors: Pangkuan
authors: P
authors: Chen
authors: Frieder
authors: F
authors: Jäkle