News Column

Reports from Linnaeus University Describe Recent Advances in Nanoparticles

June 27, 2014

By a News Reporter-Staff News Editor at Science Letter -- New research on Nanoparticles is the subject of a report. According to news reporting out of Vaxjo, Sweden, by NewsRx editors, research stated, "In nanoparticles (NPs) static quenching of luminescence may be slower than in bulk media due to the space restrictions on acceptor location. Many-body cooperative quenching (manifesting itself as, e.g., down-conversion) occurs when the donor energy is transferred to two-, three-, or more particles (a cooperative acceptor) at once."

Our news journalists obtained a quote from the research from Linnaeus University, "Random distribution of acceptor particles in diluted media accounts for the non-exponential form of the kinetics. When the analytical expression for the kinetics form is known, it can be fitted to the experiment in order to find various micro- and macro-quenching parameters of the luminescent material. In this paper, we present an analytical law for cooperative quenching kinetics in NPs at longer time. Its clear and compact form reflects the fact that, on average, donors located on the surface of NPs are the last to decay having acceptors on one side only."

According to the news editors, the research concluded: "We compared the resulting formula with the Monte-Carlo computer simulation, and they show good agreement."

For more information on this research see: Static cooperative luminescence quenching in nanoparticles. Journal of Luminescence, 2014;151():88-92. Journal of Luminescence can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier -; Journal of Luminescence -

Our news journalists report that additional information may be obtained by contacting I.T. Basieva, Linnaeus Univ, S-35195 Vaxjo, Sweden (see also Nanoparticles).

Keywords for this news article include: Vaxjo, Sweden, Europe, Nanotechnology, Emerging Technologies

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Source: Science Letter

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