Synthesis of Cycloparaphenylenes and their Binding to C60
Synthesis and C60 Binding of AzaCPP and N‑MethylazaCPP: F. Schwer, S. Zank, M. Freiberger, R. Kaur, S. Frühwald, C. C. Robertson, A. Görling, T. Drewello, D. M. Guldi, M. von Delius
Organic Materials 2022, 4, 7-17
The field of strained carbon nanostructures – such as nanohoops and nanobelts – is receiving considerable attention by chemists and materials scientists since the first report on [n]cycloparaphenylenes ([n]CPPs) in 2008. These molecules feature unusual optoelectronic and supramolecular properties that could find important applications in optoelectronic devices. Recently, a collaborative effort led by Professors Thomas Derwello and Dirk M. Guldi (Friedrich-Alexander Universität Erlangen-Nürnberg, Germany) and Professor Max von Delius (Ulm University, Germany) resulted in the development of a novel synthesis of azaCPP and N‑methylazaCPP, as well as in the incorporation of C60 in these compounds to form the corresponding supramolecular complexes.
Professor von Delius said: “Our work shows that seemingly small structural changes to the nanohoop CPP have tremendous consequences on the binding of C60 (in solution and the gas phase) and on photo-induced electron transfer from macrocycle to fullerene.”