Aromaticity is one of the most deeply rooted concepts in chemistry. But why, if two-thirds of
existing compounds can be classified as aromatic, is there no consensus on what …

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 …

In 1931, Erich Hückel published a landmark paper—the seed of the now famous 4 n+ 2 rule
for aromaticity in annulenes that bears his name. Electron counting has since been …

Singlet fission (SF) is a photophysical downconversion pathway, in which a singlet excitation
transforms into two triplet excited states. As such, it constitutes an exciton multiplication …

Fluorescence exclusively occurs from the lowest excited state of a given multiplicity
according to Kasha's rule. However, this rule is not obeyed by a handful of anti-Kasha …

Over the last several decades, exploring the pathways to access the triplet excited states of
organic chromophores has been a stimulating area of research. Among the numerous …

This review describes the current state of magnetic criteria of aromaticity. The introduction
contains the fundamentals of ring currents in aromatic and antiaromatic systems, followed by …

A review of computational studies of magnetically induced current density susceptibilities in
molecules and their relation to experiments is presented. The history of the investigation of …

Aromaticity cannot be measured directly by any physical or chemical experiment because it
is not a well-defined magnitude. Its quantification is done indirectly from the measure of …

Circularly polarized luminescence (CPL) based on aggregation-induced emission
luminogens (AIEgens) has received increasing attention owing to the increase of …