[3] Its first confirmed synthesis was published in a February 2017 issue of Nature Nanotechnology, in a project led by researchers David Fox and Anish Mistry at the University of Warwick in collaboration with IBM.

[5] A six-step synthesis yielded two isomers of dihydrotriangulene which were then deposited on xenon or copper base.

The synthesized molecule of triangulene remained stable at high-vacuum low-temperature conditions for four days, giving the scientists plenty of time to characterize it (also using STM/AFM).

When electron–electron interactions are included, theory predicts[6][7][8] that the ground state total spin quantum number S of [n]triangulenes is S = ⁠n − 1/2⁠.

The intramolecular exchange interaction in triangulene, which determines the energy difference between the S = 1 ground state and the S = 0 excited state, is predicted to be the largest[9] among all polycyclic aromatic hydrocarbon (PAH) diradicals, due to maximum overlap of the wave function of the unpaired electrons.