Back Cover: The Synthesis of Conical Carbon (Small Methods 3/2021)

The cone angles of carbon nanocones (CNCs) or carboncones are determined by the number of pentagons (1–5) in the cone tip. CNCs are multi-walled conical carbon structures produced by traditional physical-chemical methods, while carboncones are single-walled conical carbon structures prepared by the emerging bottom-up organic approaches. The advantage of organic approaches is the fabrication of conical carbons with well-defined single-walled structures. The synthesis of conical carbon is reviewed by Su-Yuan Xie and co-workers in article number 2001086.