A carbazole-embedded cyclodimer adopting a helical conformation and metal-ion sensing

Chem Commun (Camb). 2025 Jul 2. doi: 10.1039/d5cc03179f. Online ahead of print.

Abstract

An unprecedented formation of carbazole-embedded decaphyrin through acid-catalyzed condensation of appropriate coupling partners is reported. Single crystal X-ray diffraction analysis revealed that the macrocycle adopted a 'figure-of-eight' structure, wherein two pyrrole and thiophene rings were inverted. The absorption spectrum of the macrocycle exhibited ill-defined bands and it shows specific affinity towards soft metal ions such as Ag+ and Hg2+.