Author: Zhan, Shun-Ze; Liu, Yu-Li; Cai, Hong; Li, Ming-De; Huang, Qibin; Wang, Xu-Dong; Li, Mian; Dang, Li; Ng, Seik Weng; Lu, Weigang; Li, Dan

Source: Angewandte Chemie International Edition, 2023, 62, e202312698.

DOI: 10.1002/anie.202312698

Abstract:

The first coordination-saturated buckyball with a C₆₀ molecule totally encased in an icosidodecahedral Cu₃₀ in a (m₃₀-(h²)₃₀)-fashion, namely C₆₀@Cu₃₀@Cl₃₆N₁₂, has been successfully realized by a C₆₀-templated assembly. The 48 outmost coordinating atoms (36Cl+12N) comprise a new simple polyhedron that is described by a ccf topology. Charge transfer from (Cu^I, Cl) to C60 explains the expansion of the light absorption up to 700 nm, and accounts for an ultrafast photophysical process that underpins its high photothermal conversion efficiency. This work makes a giant step forward in exohedral metallofullerene (ExMF) chemistry. Judicious selection of coordination ligands has led to the first coordination-saturated buckyball with a C₆₀ molecule totally encased in an icosidodecahedral M₃₀ cluster. Charge transfer from (CuI, Cl) to C₆₀ in the triple core-shell cuprofullerene (C₆₀@Cu₃₀@Cl₃₆N₁₂) explains the light absorption up to 700 nm, and accounts for an ultrafast photophysical process that underpins its high photothermal conversion efficiency.