Issue 32, 2010
From the journal:

Physical Chemistry Chemical Physics

Fluorescence resonance energy transfer between phenanthrene and PAMAM dendrimers

Mercy Lard,a   Seung Ha Kim,b   Sijie Lin,c   Priyanka Bhattacharya,c   Pu Chun Ke*c  and  Monica H. Lamm*b  

* Corresponding authors

a Department of Physics, Lund University, Solvegatan 14, Lund, Sweden

b Department of Chemical and Biological Engineering, Iowa State University, Ames, USA
E-mail: mhlamm@iastate.edu

c Department of Physics and Astronomy, Clemson University, Clemson, USA
E-mail: pcke11@clemson.edu

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, phenanthrene–phenanthrene interactions are favorable and compete with phenanthrene–dendrimer 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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Article information

DOI
https://doi.org/10.1039/B924522G
Article type
Paper
Submitted
23 Nov 2009
Accepted
01 Jun 2010
First published
23 Jun 2010

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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