Analysis of Shape and Dimensionality Effects on Fluorescence Resonance Energy Transfer from Nanocrystals to Multiple Acceptors

The dynamic process of energy transfer from semiconductor nanocrystals acting as donors to multiple acceptors attached to their surface emerges as an important tool for probing the nanoparticle environment in the nanometric scale. Understanding the underlying principles which govern the dynamics of...

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Veröffentlicht in:Journal of physical chemistry. C 2013-10, Vol.117 (43), p.22186-22197
Hauptverfasser: Sitt, Amit, Even-Dar, Na’ama, Halivni, Shira, Faust, Adam, Yedidya, Lior, Banin, Uri
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container_end_page 22197
container_issue 43
container_start_page 22186
container_title Journal of physical chemistry. C
container_volume 117
creator Sitt, Amit
Even-Dar, Na’ama
Halivni, Shira
Faust, Adam
Yedidya, Lior
Banin, Uri
description The dynamic process of energy transfer from semiconductor nanocrystals acting as donors to multiple acceptors attached to their surface emerges as an important tool for probing the nanoparticle environment in the nanometric scale. Understanding the underlying principles which govern the dynamics of the energy transfer process, and in particular the role of the shape and dimensions of the nanocrystal in determining it, is crucial for utilizing it for a range of applications including sensing, biolabeling, and energy funneling. We describe and theoretically analyze the temporal behavior of energy transfer from core/shell spherical dot, dot in a rod, and dot in a pod nanocrystals to multiple acceptors linked to their surface. Using a modified restricted geometries model, we evaluate the different parameters which affect the energy transfer and demonstrate the role of the nanocrystal geometry and dimensions in determining the dynamics of the energy transfer process. The modeled dynamics show good agreement to experimental data measured for spherical and dot in a rod nanocrystals. The results obtained from the model indicate that energy transfer may be used for extracting the dimensions and dimensionalities of nanocrystals and for probing real-time processes in the ensemble level, which are relevant for characterization and sensing applications.
doi_str_mv 10.1021/jp308243p
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subjects Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Physics
title Analysis of Shape and Dimensionality Effects on Fluorescence Resonance Energy Transfer from Nanocrystals to Multiple Acceptors
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