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Preparation and Characterization of C60/Graphene Hybrid Nanostructures
Published on: May 15, 2018
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Visualizing host-guest co-assembly of π-expanded radialene macrocycle with C60
Yi Wang1,2, Songyao Zhang2, Xiaoyang Zhao2
1DGUT-CNAM Institute, Dongguan University of Technology, Dongguan 523007, China.
The Journal of Chemical Physics
|October 15, 2025
Summary
Researchers designed an electron-rich hexameric radialene macrocycle (HRM) to host electron-deficient fullerene C60. This host-guest complexation was confirmed in solution and at interfaces using spectroscopy and microscopy.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Organic Chemistry
Background:
- Fullerene C60 is an important electron-deficient molecule with diverse applications.
- Developing selective host molecules for fullerenes is crucial for their utilization.
- Macrocyclic compounds offer potential for tailored host-guest interactions.
Purpose of the Study:
- To design and synthesize a novel electron-rich macrocycle for fullerene C60 encapsulation.
- To investigate the host-guest complexation behavior of the designed macrocycle with C60.
- To demonstrate selective C60 binding in solution and at interfaces.
Main Methods:
- Rational design and synthesis of a hexameric radialene macrocycle (HRM).
- UV-vis absorption spectroscopy to study host-guest complexation in solution.
- Scanning tunneling microscopy (STM) to visualize complex formation at the liquid/solid interface.
- Theoretical calculations to support experimental findings.
Main Results:
- Successful synthesis of the electron-rich π-conjugated hexameric radialene macrocycle (HRM).
- HRM selectively encapsulated fullerene C60 in solution, evidenced by spectral changes.
- Visual confirmation of HRM-C60 complex formation at the 1-phenyloctane/highly oriented pyrolytic graphite interface via STM.
- Experimental and theoretical data confirmed noncovalent binding interactions.
Conclusions:
- The rationally designed HRM is an effective electron-donating host for fullerene C60.
- Geometric complementarity and cavity size are key factors for selective C60 accommodation.
- The HRM-C60 complex formation is robust in solution and at interfaces.
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