Long-Distance Electronic Energy Transfer in Light-Harvesting Supramolecular Polymers.

Winiger, Christian B.; Li, Shaoguang; Rajendran, Ganesh Kumar; Langenegger, Simon M.; Häner, Robert (2014). Long-Distance Electronic Energy Transfer in Light-Harvesting Supramolecular Polymers. Angewandte Chemie (International ed.), 53(49), pp. 13609-13613. Wiley-VCH 10.1002/anie.201407968

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The efficient collection of solar energy relies on the design and construction of well-organized light-harvesting systems. Herein we report that supramolecular phenanthrene polymers doped with pyrene are effective collectors of light energy. The linear polymers are formed through the assembly of short amphiphilic oligomers in water. Absorption of light by phenanthrene residues is followed by electronic energy transfer along the polymer over long distances (>100 nm) to the accepting pyrene molecules. The high efficiency of the energy transfer, which is documented by large fluorescence quantum yields, suggests a quantum coherent process.

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