News Column

Researchers at Utrecht University Target General Science

May 23, 2014

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Science have been published. According to news reporting originating in Utrecht, Netherlands, by NewsRx journalists, research stated, "Forster resonance energy transfer (ET) between luminescent species is applied in bio-imaging, lighting and photovoltaics, and has an important role in photosynthesis. However, the fundamental question of whether ET rates and efficiencies can be tuned by the photonic environment remains under debate."

The news reporters obtained a quote from the research from Utrecht University, "Here we show that ET rates are independent of the photonic environment, using the model system of LaPO4 nanocrystals co-doped with Ce(3+) donors and Tb(3+) acceptors. Although the radiative emission rate of the Ce(3+) excited state increases with the refractive index of the solvent in which the nanocrystals are dispersed, the Ce(3+)-to-Tb(3+) ET rate does not. We demonstrate that, as a result, lower refractive index solvents enable higher ET efficiencies leading to higher Tb(3+) emission intensities."

According to the news reporters, the research concluded: "Furthermore, an analytical model for ET in (nano)crystalline host materials is presented, able to predict the dependence of ET efficiencies on the photonic environment and the concentration of acceptor ions."

For more information on this research see: Photonic effects on the Forster resonance energy transfer efficiency. Nature Communications, 2014;5():3610. (Nature Publishing Group -; Nature Communications -

Our news correspondents report that additional information may be obtained by contacting F.T. Rabouw, Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, Utrecht 3584 CC, Netherlands. Additional authors for this research include S.A. den Hartog, T. Senden and A. Meijerink (see also Science).

Keywords for this news article include: Europe, Utrecht, Science, Netherlands.

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Source: Science Letter

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