Stable Inner 2H Tautomer of N-Confused-like Porphyrin Embedded with a Carbazole Subunit: Synthesis, Metal Coordination, and Magnetic and Anion Sensing Studies.

A new class of N-confused porphyrin embedded with a carbazole subunit was prepared via [3 + 1] acid-catalyzed condensation of appropriate precursors. underwent smooth metal complexation with Pd(II) and Cu(II) salts to provide the corresponding diamagnetic and paramagnetic , respectively. The single-crystal X-ray structure of is evident with a square-planar Pd-center through C-H activation of inverted pyrrole.

Planar hexaphyrin-like macrocycles turning into bis-BODIPYs with box-shaped structures exhibiting excitonic coupling.

Planar carbazole based hexaphyrin-like macrocycles with bis-coordinating cores and box-shaped cyclic BODIPYs were synthesized. Solution and solid-state structure analysis of the free macrocycles indicates an inversion of two pyrrole rings, resulting in a two-dipyrrin-like environment. The BF complexes show large Stokes shifts and exhibit excitonic coupling, fine-tuned by the -substituents.

Carbazole-Based Porphyrins: Synthesis, Structure-Photophysical Property Correlations, and Mercury Ion Sensing.

The synthesis of a new class of carbazole based macrocycles via [3 + 1] acid-catalyzed condensation is reported. Spectroscopic investigations and computational studies imply that these macrocycles have a large influence on the electronic structure in comparison to previously reported carbazole based macrocycles. Macrocycle bearing a furan ring reversibly binds aqueous Hg with high affinity over other M ions.