Functionally layered dendrimers: a new building block and its application to the synthesis of multichromophoric light-harvesting systems.
[reaction: see text] 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.
Dichtel
William R
WR
Department of Chemistry, University of California-Berkeley, Berkeley, California 94720, USA.
Hecht
Stefan
S
Fréchet
Jean M J
JM
D050091:Dendrimers / Q000737:chemistry*; D008027:Light; D008958:Models, Molecular; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry; D010777:Photochemistry; D011753:Pyrones / Q000737:chemistry; D013057:Spectrum Analysis
D050091:Dendrimers; D009281:Naphthalenes; D011753:Pyrones