A self-assembled fullerene receptor based on calix[5]arene has been develop
ed. Silver cation complexation held together the two calix[5]arenes with bi
pyridine units providing a large enough cavity to take up C-60 or C-70. The
formation of the supramolecular complex with C-60 or C-70 was established
by using the electrospray mass spectrometry. (C) 2001 Elsevier Science Ltd.
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