A H2@C601H NMR probe for sensitively detecting the supramolecular interactions between a molecular tweezer and C60.

Herein, we firstly utilized H2@C60 to monitor the supramolecular interaction between a pH-driven resorcin[4]arene molecular tweezer and C60 with a notable 1H NMR chemical shift change (ca. 0.34 ppm). This work provides a new strategy for detecting weak or complex supramolecular interactions.