Since the prediction of the existence of metallabenzenes in 1979, metallaaromatic chemistry
has developed rapidly, due to its importance in both experimental and theoretical fields …

Porphyrins feature prominently in nature, be it as enzymatic cofactors, electron and exciton
shuffles, as photoactive dyes, or as signaling substances. Their involvement in the …

Two-dimensionally extended, polycyclic heteroaromatic molecules (heterocyclic
nanographenes) are a highly versatile class of organic materials, applicable as functional …

Since the discovery of its facile synthesis in 2001, meso-aryl-substituted expanded
porphyrins have been developed as a new class of azaannulenes in light of their facile …

Conjugated porphyrin arrays that possess delocalised electronic networks have, for the most
part, been assembled by using alkene or alkyne type bridging units or by directly connecting …

Porphyrin contains four inwardly oriented nitrogen atoms. It is arguably the most ubiquitous
multifunctional naturally occurring macrocycle that has inspired the design of novel nitrogen …

Conspectus The ring currents of aromatic and antiaromatic molecules are remarkable
emergent phenomena. A ring current is a quantum-mechanical feature of the whole system …

One of the most important objectives in materials, chemical, and physical sciences is the
creation of large conjugated macrocycles with well‐defined shapes, since such molecules …

Conspectus Aromaticity is one of the most important concepts in organic chemistry to
understand the electronic properties of cyclic π-conjugated molecules. Over a century …

Aromaticity can be defined by the ability of a molecule to sustain a ring current when placed
in a magnetic field. Hückel's rule states that molecular rings with [4 n+ 2] π-electrons are …