Three Short Stories about Hexaarylbenzene Porphyrin Scaffolds.
A feasible two step synthesis and characterization of a full series of hexaarylbenzene (HAB) substituted porphyrins and tetrabenzoporphyrins is presented. Key steps represent the microwave assisted porphyrin condensation and the statistical Diels Alder reaction to the desired HAB porphyrins. Regarding their applications, they proved to be easily accessible and effective high molecular mass calibrants for (MA)LDI mass spectrometry. The free base and zinc(II) porphyrin systems, as well as the respective tetrabenzoporphyrins, demonstrate in solid state experiments strong red and near infrared light emission and are potentially interesting for the application in "truly organic" light emitting devices. Lastly, they represent facile precursors to large polycyclic aromatic hydrocarbon (PAH) substituted porphyrins. We prepared the first tetra hexa peri hexabenzocoronene substituted porphyrin, which represents the largest prepared PAH porphyrin conjugate to date.
Chemistry