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Issue 32, 2010
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Fluorescence resonance energy transfer between phenanthrene and PAMAM dendrimers

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Abstract

We describe herein an adsorption-induced energy transfer between phenanthrene, a major environmental pollutant, and a fluorescently labeled dendrimer acting as a host molecule. We find experimentally that such energy transfer is the most efficient at a solvent pH of 8 and for a phenanthrene ∶ dendrimer molar ratio of 1 ∶ 2. Using molecular dynamics simulations we show that the strongest binding interactions occur between phenanthrene and the primary amines of the dendrimer. The simulations provide evidence that at low pH, phenanthrenephenanthrene interactions are favorable and compete with phenanthrenedendrimer binding. This study offers a new scheme for detecting dendrimer molecular assembly and a physical basis for exploiting dendrimer nanotechnologies for water purification and environmental remediation.

Graphical abstract: Fluorescence resonance energy transfer between phenanthrene and PAMAM dendrimers

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Publication details

The article was received on 23 Nov 2009, accepted on 01 Jun 2010 and first published on 23 Jun 2010


Article type: Paper
DOI: 10.1039/B924522G
Citation: Phys. Chem. Chem. Phys., 2010,12, 9285-9291

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    Fluorescence resonance energy transfer between phenanthrene and PAMAM dendrimers

    M. Lard, S. H. Kim, S. Lin, P. Bhattacharya, P. C. Ke and M. H. Lamm, Phys. Chem. Chem. Phys., 2010, 12, 9285
    DOI: 10.1039/B924522G

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