Transesterification of PC ₆₁ BM as a Facile Approach to the Synthesis of Fullerene Derivatives with Tunable Properties

We report a simple one‐pot method for transforming commercial PC61BM into a variety of functional fullerene derivatives with tunable properties, such as compounds with oligo(ethylene glycol) or alkyl ester side chains. The proposed approach bypasses multistep synthesis, greatly simplifies access to diverse fullerene derivatives, and provides a practical platform for the rational design of optoelectronic and biomedical materials.