Precise synthesis and properties of open-shell graphenefragments with heteroatomic modification

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In quest of novel electronic-/magnetic materials based on open-shell graphene fragments, design and synthesis of trioxotriangulene (TOT) derivatives, air-stable organic neutral radicals with three oxygen atoms on a triangulene skeleton, and disclosure of their properties in the solution and solid state have been carried out. We have successfully controlled molecular stability, π-stacking mode by SOMO-SOMO interaction, redox ability in terms of modification of the frontier molecular orbitals and the electronic-spin density distribution by substituent effect in a controlled manner