Related Experiment Video
Updated: Feb 15, 2026

Chemical Dimerization-Induced Protein Condensates on Telomeres
Published on: April 12, 2021
Phenylene Bridged Cyclic Azaacenes: Dimers and Trimers
Sebastian Hahn1, Silke Koser1, Manuel Hodecker2
1Organisch Chemisches Institut, Ruprecht-Karls-Universität, Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.
Abstract:
The synthesis and characterization of novel macrocyclic, phenylene-bridged azaacenes is reported. These species were obtained either by a conventional benzoin- diamine condensation, as shown for the case of the cyclotrimers, in which the azaacene units are separated by meta-connected phenylene bridges, or by a Buchwald-Hartwig-type Pd-catalyzed coupling, which employs 1,2,5,6-tetrabromodibenzocyclooctatetraene as the substrate and bis-TIPS-ethynylated diaminobenzene, -naphthalene or -anthracene as the coupling partner to give the double coupling products azaacene-annulated dibenzocyclooctatetraenes in moderate yields. The macrocycles show strong emission and light emitting diodes have been built with brightnesses exceeding 1600 cd m-2 . We evaluated the optical and electronic properties and the solid-state structures of the molecules and discuss their properties through comparison with their linear and tetrameric N-heteroacene counterparts.
Related Concept Videos
Design Example: Strain Gauge Bridge or Wheatstone Bridge
Wheatstone Bridge
Thus, for accurate resistance measurements, a...
Bridge rectifier
Operationally, the bridge rectifier allows current flow through two of its diodes during each...
Cross-bridge Cycle
Stereoisomerism of Cyclic Compounds
Voltammetric Techniques: Cyclic Voltammetry

