The main objectives of the proposed research are to (1) develop synthetic methods to make atomically precise, monodisperse, and stable open-shell graphene fragments and (2) characterize and experimentally establish the high-spin ground-state nature of these species in solution and in the solid state. In my research plan, I also aim to (3) gain a fundamental understanding of multiradical interactions and (4) study the intra- and intermolecular synergy of the synthesized open-shell species in solution and in the solid state. Finally, (5) the electronic and magnetic properties of the single molecules and their ensembles will be investigated in order to (6) allow for the design of small-molecule-based electronic devices.