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 …

Organic radicals can potentially play important roles in functional materials owing to an
unpaired electron, but they are usually highly reactive and difficult to use. Therefore …

Unlike classic spins, quantum magnets are spin systems that interact via the exchange
interaction and exhibit collective quantum behaviours, such as fractional excitations …

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

Many qualitative structure–property correlations between diradical character and emerging
molecular properties are known. For example, the increase of diradical character further …

The non-innocent ligand nature of porphyrins was observed for compound I in enzymatic
cycles of cytochrome P450. Such porphyrin radicals were first regarded as reactive …

High‐spin conjugated radicals have great potential in magnetic materials and organic
spintronics. However, to obtain high‐spin conjugated radicals is still quite challenging due to …

Organic open-shell compounds are extraordinarily attractive materials for their use in
molecular spintronics thanks to their long spin-relaxation times and structural flexibility …

Conspectus The odd alternant hydrocarbon phenalenyl (PLY) can exist in three different
forms, a closed-shell cation, an open-shell radical, and a closed-shell anion, using its …

Ever since the discovery of the porphyrin ring in “pigments of life”, such as chlorophyll and
hemoglobin, it has become a prime synthetic target for optoelectronic properties and in the …