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Updated: Feb 18, 2026

Preparation and Characterization of C60/Graphene Hybrid Nanostructures
Published on: May 15, 2018
Unveiling the nature of supramolecular crown ether-C60 interactions
Luis Moreira1, Joaquín Calbo2, Rafael M Krick Calderon3
1Departamento de Química Orgánica , Facultad de Química , Universidad Complutense de Madrid , 28040 Madrid , Spain .
Abstract:
A series of exTTF-(crown ether)2 receptors, designed to host C60, has been prepared. The size of the crown ether and the nature of the heteroatoms have been systematically changed to fine tune the association constants. Electrochemical measurements and transient absorption spectroscopy assisted in corroborating charge transfer in the ground state and in the excited state, leading to the formation of radical ion pairs featuring lifetimes in the range from 12 to 21 ps. To rationalize the nature of the exTTF-(crown ether)2·C60 stabilizing interactions, theoretical calculations have been carried out, suggesting a synergetic interplay of donor-acceptor, π-π, n-π and CH···π interactions, which is the basis for the affinity of our novel receptors towards C60.
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