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Molecules 2012, 17(5), 5816-5835; doi:10.3390/molecules17055816

Recent Advances in Photoinduced Electron Transfer Processes of Fullerene-Based Molecular Assemblies and Nanocomposites

1
CarbonPhotoScience, Kita-Nakayama, 2-1-6, Izumi-ku, Sendai 981-3215, Japan
2
Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX 76203, USA
*
Authors to whom correspondence should be addressed.
Received: 29 March 2012 / Revised: 3 May 2012 / Accepted: 8 May 2012 / Published: 16 May 2012
(This article belongs to the Special Issue Fullerene Chemistry)
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Abstract

Photosensitized electron-transfer processes of fullerenes hybridized with electron donating or other electron accepting molecules have been surveyed in this review on the basis of the recent results reported mainly from our laboratories. Fullerenes act as photo-sensitizing electron acceptors with respect to a wide variety of electron donors; in addition, fullerenes in the ground state also act as good electron acceptors in the presence of light-absorbing electron donors such as porphyrins. With single-wall carbon nanotubes (SWCNTs), the photoexcited fullerenes act as electron acceptor. In the case of triple fullerene/porphyrin/SWCNT architectures, the photoexcited porphyrins act as electron donors toward the fullerene and SWCNT. These mechanisms are rationalized with the molecular orbital considerations performed for these huge supramolecules. For the confirmation of the electron transfer processes, transient absorption methods have been used, in addition to time-resolved fluorescence spectral measurements. The kinetic data obtained in solution are found to be quite useful to predict the efficiencies of photovoltaic cells.
Keywords: fullerenes; porphyrins; phthalocyanine; single-wall carbon nanotubes; electron-transfer; photoelectrochemistry fullerenes; porphyrins; phthalocyanine; single-wall carbon nanotubes; electron-transfer; photoelectrochemistry
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Ito, O.; D’Souza, F. Recent Advances in Photoinduced Electron Transfer Processes of Fullerene-Based Molecular Assemblies and Nanocomposites. Molecules 2012, 17, 5816-5835.

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