Highly efficient Förster resonance energy transfer between CdTe nanocrystals and two different dye molecules

Edouard Alphandery; Laura Walsh; Yury P. Rakovich; A. L. Bradley; John F. Donegan; Nicolai Gaponik; Yurii K. Gunko

doi:10.1117/12.544506

10 September 2004 Highly efficient Forster resonance energy transfer between CdTe nanocrystals and two different dye molecules

Edouard Alphandery, Laura Walsh, Yury P. Rakovich, A. L. Bradley, John F. Donegan, Nicolai Gaponik, Yurii K. Gunko

Author Affiliations +

Proceedings Volume 5462, Biophotonics Micro- and Nano-Imaging; (2004) https://doi.org/10.1117/12.544506
Event: Photonics Europe, 2004, Strasbourg, France

Abstract

We report highly efficient Forster resonance energy transfer between CdTe nanocrystals and two different dyes, Rhodamine B and Oxazine, where the nanocrystals are mixed with the dyes on top of glass substrates. A faster NC decay curve is observed in the samples containing NCs mixed with dyes than in those containing NCs on their own. For the samples containing nanocrystals mixed with Rhodamine B, room temperature PL measurements are presented as a function of the ratio between the amount of acceptors and the amount of donors, C_A/C_D. This ratio is varied between 0.03 and 5. The strongest enhancement of the acceptor PL intensity relative to that of the donor PL intensity is reached for 0.2A/C_D<5, suggesting that most efficient FRET is also achieved in this region.

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Edouard Alphandery, Laura Walsh, Yury P. Rakovich, A. L. Bradley, John F. Donegan, Nicolai Gaponik, and Yurii K. Gunko "Highly efficient Forster resonance energy transfer between CdTe nanocrystals and two different dye molecules", Proc. SPIE 5462, Biophotonics Micro- and Nano-Imaging, (10 September 2004); https://doi.org/10.1117/12.544506

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