期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 21, 页码 6202-6206出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201600428
关键词
delocalized state; hybrid polariton; J-aggregate cyanine dye; non-radiative energy transfer; strong coupling
资金
- ERC [GA-227557]
- International Center for Frontier Research in Chemistry (icFRC, Strasbourg)
- ANR Equipex Union [ANR-10-EQPX-52-01]
- Investissement O'Avenir program [ANR-10-IDEX-0002-02]
- Labex NIE project [ANR-11-LABX-0058 NIE]
- Labex CSC project [ANR-10-LABX-0026 CSC]
We present direct evidence of enhanced non-radiative energy transfer between two J-aggregated cyanine dyes strongly coupled to the vacuum field of a cavity. Excitation spectroscopy and femtosecond pump-probe measurements show that the energy transfer is highly efficient when both the donor and acceptor form light-matter hybrid states with the vacuum field. The rate of energy transfer is increased by a factor of seven under those conditions as compared to the normal situation outside the cavity, with a corresponding effect on the energy transfer efficiency. The delocalized hybrid states connect the donor and acceptor molecules and clearly play the role of a bridge to enhance the rate of energy transfer. This finding has fundamental implications for coherent energy transport and light-energy harvesting.
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