Endohedral Lithium-Ion-Containing Fullerene Bearing Diphenylmethano or Fluoreno Groups

摘要

Lithium-ion-containing [60]fullerene, Li+~@C_(60), is a highly electron accepting material, which have been utilized in electron transfer chemistry, supramolecular chemistry, photovoltaics, singlet oxygen generation, and so on. Considering what chemical modification of fullerene has played in, that for Li+~@C_(60) would be a significant step for further functionalization of this compound.1-3 Methano (methanediyl) groups (R2C=) have acted as important part in fullerene chemistry. One simple route to obtain mathanofullerene is using diazoalkanes, such as diazomethane. The most common fullerene derivative, [6,6]-phenyl-C_(61)-butyric acid methyl ester (PCBM) was synthesized with a diazoalkane generated by thermolysis of tosylhydrazone.