Synthesis and ultrafast spectroscopic study of new [6,6]methanofullerenes

Abstract

Ultrafast transient absorption and terahertz spectroscopic studies have been performed on new [6,6]methanofullerenes synthesized by the reaction of diazomethane with fullerene[60] via eco-friendly methodology, amine-assisted 1,3 dipolar cycloaddition (AACA).

[2 + 1] Cycloaddition reactions of fullerene C60 based on diazo compounds

“…In a study by Kumar and co-workers [ 161 ], the synthesis of methanofullerenes 206 and 207 was based on 3-methoxy-4-hydroxycinnamic aldehyde and a chalcon obtained by Claison condensation of acetophenone with 2-hydroxy-5-nitrobenzaldehyde ( Scheme 41 ). Further, the same team obtained methanofullerene adduct 208 based on 2-nitrocinnamic aldehyde ( Scheme 42 ) [ 116 ].…”

Tuning of energy levels, transport properties and device performance of naphthalenediimide derivatives by introduction of Michael addition reaction

“…This reaction leads to the formation of enone where an α–β double bond is present next to phenyl ketone. 36 The synthesis of Michael addition products 3 and 4 is shown in Fig. S1(b) (ESI†).…”