Sonochemical Synthesis of Fullerene C60/Anthracene Diels-Alder Mono and Bis-adducts

The sonication of a mixture of C-60 fullerene and anthracene in benzene yields the trans-1 bis-adduct C-60(anthracene)(2) in 52% yield. The bis-adduct is accompanied by the monoadduct C-60(anthracene) in 26% yield. The reaction products of the sonochemical synthesis were identified by FT-IR and electronic absorption spectroscopy. The composition of adducts and their thermal stability was studied by thermogravimetric analysis (TGA) and by differential thermal analysis (DTA). The advantages of the sonochemical synthesis in terms of yields and regioselectivity toward the highly symmetric trans-1 bis-adduct C-60(anthracene)(2) are outlined.