Issue 10, 2000

Polybenzyl ether dendrimers for the complexation of [60]fullerenes

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.

Article information

Article type
Paper
Submitted
03 Apr 2000
Accepted
13 Jun 2000
First published
15 Sep 2000

New J. Chem., 2000,24, 749-758

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

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements