Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 136, Issue 23, Pages 8217-8220Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja504730j
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Funding
- EPSRC
- ERC
- People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme (FP7) under REA [299925]
- Defense Advanced Research Projects Agency (DARPA)
- DAAD (German Academic Exchange Service)
- Strategic Scholarships for Frontier Research Network for Research Groups from the Office of Higher Education Council of Thailand [CHE-RES-RG50]
- EPSRC [EP/D073766/1, EP/J007161/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/J007161/1, EP/D073766/1] Funding Source: researchfish
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We report the synthesis of LH2-like supramolecular double- and triple-stranded complexes based upon porphyrin nanorings. Energy transfer from the antenna dimers to the pi-conjugated nanoring occurs on a subpicosecond time scale, rivaling transfer rates in natural light-harvesting systems. The presence of a second nanoring acceptor doubles the transfer rate, providing strong evidence for multidirectional energy funneling. The behavior of these systems is particularly intriguing because the local nature of the interaction may allow energy transfer into states that are, for cyclic nanorings, symmetry-forbidden in the far field. These complexes are versatile synthetic models for natural light-harvesting systems.
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