Fluorescence decay enhancement and FRET inhibition in self-assembled
  hybrid gold CdSe/CdS/CdZnS colloidal nanocrystals supraparticles

Blondot, V.; Arnold, C.; Delteil, A.; Gérard, D.; Bogicevic, A.; Pons, T.; Lequeux, N.; Hugonin, J. -P.; Greffet, J. -J.; Buil, S.; Hermier, J-P.

doi:10.48550/arXiv.2207.03135

Fluorescence decay enhancement and FRET inhibition in self-assembled hybrid gold CdSe/CdS/CdZnS colloidal nanocrystals supraparticles

Version 2 2023-06-08, 12:56

Version 1 2023-02-09, 17:00

preprint

posted on 2023-06-08, 12:56 authored by V. Blondot, C. Arnold, A. Delteil, D. Gérard, A. Bogicevic, T. Pons, N. Lequeux, J. -P. Hugonin, J. -J. Greffet, S. Buil, J-P. Hermier

We report on the synthesis of hybrid light emitting particles with a diameter ranging between 100 and 500 nm, consisting in a compact semiconductor CdSe/CdS/CdZnS nanocrystal aggregate encapsulated by a controlled nanometric size silica and gold layers. We first characterize the Purcell decay rate enhancement corresponding to the addition of the gold nanoshell as a function of the particle size and find a good agreement with the predictions of numerical simulations. Then, we show that the contribution corresponding to F\"orster resonance energy transfer is inhibited.