Efficient Förster energy transfer from phosphorescent organic molecules to J-aggregate thin films
We demonstrate efficient Förster resonance energy transfer (FRET) from a thin film of phosphorescent dye, fac tris(2-phenylpyridine) iridium (Ir(ppy){sub 3}), to a thin film of J-aggregated cyanine dye, 5,6-dichloro-2-[3-[5,6-dichloro-1-ethyl-3-(3-sulfopropyl)-2(3H)-benzimidazolidene]-1-propenyl]-1-ethyl-3-(3-sulfopropyl) benzimidazolium hydroxide (TDBC). The measurement is performed on a planar sandwich structure with the layer of Ir(ppy){sub 3} and the layer of J-aggregates separated by a uniform optically inert spacer layer. Quenching of Ir(ppy){sub 3} photoluminescence due to FRET of Ir(ppy){sub 3} excitons to J-aggregates enables us to calculate the experimentally-determined Förster radius of 3.8 nm, which is in good agreement with the theoretically calculated value.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Excitonics (CE)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- DOE Contract Number:
- SC0001088
- OSTI ID:
- 1064758
- Journal Information:
- Chemical Physics Letters, Vol. 485, Issue 1-3; Related Information: CE partners with Massachusetts Institute of Technology (lead); Brookhaven National Laboratory; Harvard University; ISSN 0009-2614
- Country of Publication:
- United States
- Language:
- English
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