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Issue 20, 2007
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Intramolecular energy transfer in a tetra-coumarinperylene system: influence of solvent and bridging unit on electronic properties

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Abstract

The synthesis and characterisation of a novel coumarin donor–perylene bisimide acceptor light-harvesting system is reported, in which an energy-transfer efficiency of >99% is achieved. Comparison of the excited-state properties of the donor–acceptor system with model compounds revealed that although the photophysical properties of the perylene bisimide acceptor unit are affected considerably by the nature of the substituent at the imide positions and the solvent employed, through-bond interaction between the donor and acceptor units is negligible. Energy transfer in the present system can be described as occurring via a through-space energy-transfer mechanism. Careful consideration of the redox properties of the donor relative to the acceptor units allows for avoidance of potentially deleterious excited-state electron-transfer processes.

Graphical abstract: Intramolecular energy transfer in a tetra-coumarinperylene system: influence of solvent and bridging unit on electronic properties

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Supplementary files

Article information


Submitted
31 Jul 2007
Accepted
30 Aug 2007
First published
17 Sep 2007

Org. Biomol. Chem., 2007,5, 3354-3362
Article type
Paper

Intramolecular energy transfer in a tetra-coumarinperylene system: influence of solvent and bridging unit on electronic properties

J. H. Hurenkamp, W. R. Browne, R. Augulis, A. Pugžlys, P. H. M. van Loosdrecht, J. H. van Esch and B. L. Feringa, Org. Biomol. Chem., 2007, 5, 3354 DOI: 10.1039/B711681K

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