Synthesis and Property of Carbazole-Based Diporphyrins

Since carbazole is benzene-fused pyrrole, incorporation of a carbazole unit into fused porphyrinoids represents interesting possibilities. We have developed carbazole-based porphyrins which exhibited NIR absorption due to the quadruple benzo-fusion moieties. Following the successful synthesis, we have investigated the peripheral and core modifications and ring-expansion of the macrocycle as well as the applications to BODIPY derivatives. Furthermore, we recently synthesized carbazole-based diporphyrins to investigate the intramolecular electronic interactions. Here synthesis and photophysical property of carbazole-based diporphyrins are reported.