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Functionally Layered Dendrimers:  A New Building Block and Its Application to the Synthesis of Multichromophoric Light-Harvesting Systems

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journal contribution
posted on 29.09.2005, 00:00 by William R. Dichtel, Stefan Hecht, Jean M. J. Fréchet
A divergent synthesis of internally functionalized dendrimers based on a modular functional monomer has been developed. This strategy was applied to the construction of a light-harvesting dendrimer containing one set of naphthopyranone dyes located at the interior and another set of coumarin chromophores located in the adjacent outer layer surrounding a porphyrin acceptor. Quantitative energy transfer from both donor pigments is observed, giving rise to exclusive emission from the porphyrin core over all excitation wavelengths.