Triangulene-based Nanostar

A star-shaped triangulene cyclic hexamer, which accumulates 12 unpaired electrons, was prepared by combining solution chemistry and on-surface synthesis. The resulting triangulene-based nanostar was visualized by bond-resolved scanning tunneling microscopy on a gold substrate. The particular magnetic ordering of the 12 unpaired electrons gives rise to collective spin excitations.

More details in J. Hieulle et al. Angew. Chem. Int. Ed. 2021, 60, 25224.