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Sensors 2015, 15(6), 13288-13325; doi:10.3390/s150613288

Förster Resonance Energy Transfer between Quantum Dot Donors and Quantum Dot Acceptors

1
Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
2
Department of Biomedical Engineering and Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Niko Hildebrandt, Igor Medintz and Russ Algar
Received: 22 April 2015 / Revised: 29 May 2015 / Accepted: 1 June 2015 / Published: 5 June 2015
(This article belongs to the Special Issue FRET Biosensors)
View Full-Text   |   Download PDF [8289 KB, uploaded 9 June 2015]   |  

Abstract

Förster (or fluorescence) resonance energy transfer amongst semiconductor quantum dots (QDs) is reviewed, with particular interest in biosensing applications. The unique optical properties of QDs provide certain advantages and also specific challenges with regards to sensor design, compared to other FRET systems. The brightness and photostability of QDs make them attractive for highly sensitive sensing and long-term, repetitive imaging applications, respectively, but the overlapping donor and acceptor excitation signals that arise when QDs serve as both the donor and acceptor lead to high background signals from direct excitation of the acceptor. The fundamentals of FRET within a nominally homogeneous QD population as well as energy transfer between two distinct colors of QDs are discussed. Examples of successful sensors are highlighted, as is cascading FRET, which can be used for solar harvesting. View Full-Text
Keywords: Förster resonance energy transfer; FRET; semiconductor quantum dots; biosensing; resonance energy transfer; crosstalk; solar harvesting Förster resonance energy transfer; FRET; semiconductor quantum dots; biosensing; resonance energy transfer; crosstalk; solar harvesting
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chou, K.F.; Dennis, A.M. Förster Resonance Energy Transfer between Quantum Dot Donors and Quantum Dot Acceptors. Sensors 2015, 15, 13288-13325.

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