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Volume 13 Issue 5, May 2021

Favoured functionalization for fettered fullerene

Adding two groups to C60 through Bingel cyclopropanation can lead to the formation of many different isomers that can be challenging to separate. Now, using a supramolecular masking approach that relies on the formation of a three-shell complex reminiscent of the concept of Russian dolls, Xavi Ribas, Max von Delius and co-workers have shown that it is possible to selectively form the trans-3 fullerene bis-adduct. As shown on the cover of this issue, the C60 is encircled by a cycloparaphenylene nanohoop which, in turn, is encapsulated inside a self-assembled metal–organic nanocapsule, ensuring that bis-functionalization of the fullerene occurs only at accessible sites to give a single isomeric product.

See Ubasart et al.

Image credit: Image courtesy of Dr. Johannes Richers, Jo Richers Studio. Cover design: Tulsi Voralia.


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News & Views

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Review Articles

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  • A supramolecular three-shell matryoshka-like complex di rects the functionalization of the C60 inner shell to the selective formation of a single trans-3 fullerene bis-adduct. The selectivity with this matryoshka-like approach could be useful for applications where regioisomerically pure C60 bis-adducts have been shown to have superior properties compared with isomer mixtures.

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