title: Aromaticity Switching in Porphyrinoids.
abstract: The aromaticity of porphyrinoids can be substantially altered by reversible modification of their original electronic structures. Well-defined modulators can be used as a means to initiate these modifications, including redox processes, acid-base chemistry, and conformational phenomena. This Focus Review emphasizes the situation for which a single macrocyclic frame alternatively adopts diatropic and paratropic features and both situations are readily and mutually exchangeable. Eventually, such a porphyrinoid transformation can be explored as a suitable element to construct switchable optoelectronic materials.
authors.affiliation: Department of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50383, Wrocław. milosz.pawlicki@chem.uni.wroc.pl.
authors.forename: Miłosz
authors.initials: M
authors.lastname: Pawlicki
authors.affiliation: Department of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50383, Wrocław. lechoslaw.latos-grazynski@chem.uni.wroc.pl.
authors.forename: Lechosław
authors.initials: L
authors.lastname: Latos-Grażyński
keywords: NMR spectroscopy; antiaromaticity; aromaticity; nuclear-independent chemical shift; porphyrinoids