Issue 9, 2009
From the journal:

Journal of Materials Chemistry

Energy transfer with semiconductor nanocrystals

Andrey L. Rogach,*a   Thomas A. Klar,b   John M. Lupton,c   Andries Meijerinkd  and  Jochen Feldmanna  

* Corresponding authors

a Photonics and Optoelectronics Group, Department of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München, Amalienstr. 54, Munich, Germany
E-mail: andrey.rogach@physik.uni-muenchen.de
Fax: +0049-89-2180 3441

b Institute of Physics and Institute of Micro- and Nanotechnologies, Technische Universität Ilmenau, Unterpörlitzerstr. 38, Ilmenau, Germany

c Department of Physics, University of Utah, Salt Lake City, Utah, USA

d Condensed Matter and Interfaces, Department of Chemistry, Debye Institute, Utrecht, The Netherlands

Abstract

Förster (or fluorescence) resonant energy transfer (FRET) is a powerful spectroscopic technique to study interactions, conformational and distance changes, in hybrid nanosystems. Semiconductor nanocrystals, also known as colloidal quantum dots, are highly efficient fluorophores with a strong band-gap luminescence tuneable by size as a result of the quantum confinement effect. Starting from a short summary on the FRET formalism and on the basic properties of semiconductor nanocrystals, this Feature Article provides an overview of the major classes of hybrid FRET systems with semiconductor nanocrystals as at least one component. Systems under consideration include thin solid films containing differently sized semiconductor nanocrystals, solution-based complexes of differently sized semiconductor nanocrystals, nanocrystal-based bioconjugates, and hybrid structures of semiconductor and gold nanoparticles. We focus in particular on the directional energy transfer in layer-by-layer assembled multilayers of differently sized CdTe semiconductor nanocrystals and on the energy transfer from individual rod-like semiconductor CdSe/CdS nanoantennae to single dye molecules, which can be efficiently controlled by external electric fields leading to the realisation of the FRET optical switch.

Graphical abstract: Energy transfer with semiconductor nanocrystals

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Article information

DOI
https://doi.org/10.1039/B812884G
Article type
Feature Article
Submitted
25 Jul 2008
Accepted
14 Oct 2008
First published
19 Nov 2008

J. Mater. Chem., 2009,19, 1208-1221

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Energy transfer with semiconductor nanocrystals

A. L. Rogach, T. A. Klar, J. M. Lupton, A. Meijerink and J. Feldmann, J. Mater. Chem., 2009, 19, 1208 DOI: 10.1039/B812884G

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