Emergence of π-magnetism in open-shell nanographenes has been theoretically predicted
decades ago but their experimental characterization was elusive due to the strong chemical …

The unique open-shell electronic structure of neutral π-radicals has inspired research on
novel molecular materials for over a century. In recent years, rapid development in carbon …

Graphene can develop large magnetic moments in custom-crafted open-shell
nanostructures such as triangulene, a triangular piece of graphene with zigzag edges …

This Perspective discusses salient features of the spin-flip approach to strong correlation
and describes different methods that sprung from this idea. The spin-flip treatment exploits …

Triangulenes are a class of open‐shell triangular graphene flakes with total spin increasing
with their size. In the last years, on‐surface‐synthesis strategies have permitted fabricating …

We have investigated the origin of the S1‐T1 energy levels inversion for heptazine, and
other N‐doped π‐conjugated hydrocarbons, leading thus to an unusually negative singlet …

A kinetically‐stabilized nitrogen‐doped triangulene cation derivative has been synthesized
and isolated as the stable diradical with a triplet ground state that exhibits near‐infrared …

The full harvesting of both singlet and triplet excitons can pave the way toward more efficient
molecular light-emission mechanisms (ie, TADF or thermally activated delayed …

In this work, we focus on the understanding of the driving force behind the S1–T1 excited-
state energy inversion (which would thus violate Hund's rule, making the S1 state lower in …

The energy difference (ΔE ST) between the lowest singlet (S 1) state and the triplet (T 1)
excited state of a set of azaphenalene compounds, which is theoretically and experimentally …