Supramolecular Dendrimers Self‐Assembled from Dendritic Fullerene Ligands and a Homotritopic Hamilton Receptor

Supramolecular dendrimers resulting from the self‐assembly of a series of dendrofullerens 2a–4b containing a cyanuric acid building block at their focal point with the homotritopic Hamilton receptor 1 were prepared. The 1:3 compositions of the supramolecular dendrimers as well as the association constants Kn and the cooperativity of binding expressed by Scatchard plots and Hill coefficients nH were determined by NMR titration experiments. The most pronounced positive cooperativity was observed for the 1:L3 complexes with L being first generation dendrons. With the bulky second generation dendrons less stable complexes are formed.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)