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Issue 10, 2000
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Polybenzyl ether dendrimers for the complexation of [60]fullerenes

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Abstract

The formation of host-guest complexes between C60 and polybenzyl ether dendrimers with different central cores (phloroglucinol, meso-tetraphenylporphyrin, cyclotriveratrylene) has been investigated in organic solvents by means of 13C-NMR and UV-Vis spectroscopy. The interior of the dendrimers with a phloroglucinol core provides the correctly sized space for the inclusion of [60]fullerene and 13C-NMR studies suggest that the guest resides near the central core. In the dendrimers containing a meso-tetraphenylporphyrin (TPP) core, the absorbance of the porphyrin Soret band is substantially reduced in the presence of [60]fullerene, thus providing evidence for close vicinity of the fullerene guest to the central core. In solution, the cyclotriveratrylene (CTV) unit alone is a poor receptor for fullerene, but its functionalization with polybenzyl ether dendrons affords an internal cavity with a more appropriate shape and dimension, thus allowing complexation. Indeed, the Ka values (order of magnitude 101–102 L mol−1) increase significantly with the generation number of the surrounding dendritic substituents.

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Publication details

The article was received on 03 Apr 2000, accepted on 13 Jun 2000 and first published on 15 Sep 2000


Article type: Paper
DOI: 10.1039/B002722G
Citation: New J. Chem., 2000,24, 749-758
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    Polybenzyl ether dendrimers for the complexation of [60]fullerenes

    J. Eckert, D. Byrne, J. Nicoud, L. Oswald, J. Nierengarten, M. Numata, A. Ikeda, S. Shinkai and N. Armaroli, New J. Chem., 2000, 24, 749
    DOI: 10.1039/B002722G

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