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Issue 3, 2009
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Gold nanoparticle-PPE constructs as biomolecular material mimics: understanding the electrostatic and hydrophobic interactions

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Abstract

Eleven cationic, monolayer-protected quaternary ammonium-functionalized gold nanoparticles (ANPs) were prepared and investigated for their ability to quench the fluorescence of a poly(p-phenyleneethynylene) (PPE) that features carboxylate groups to enable electrostatic interactions with the ANPs. Depending upon their structures, the ANPs displayed binding constants to the PPE from 8 × 107 to 1010 M−1, with particularly high affinity observed with aromatic functionalized ANPs capable of aromatic stacking. These binding constants were obtained by analyzing the quenching data using a modified Stern–Volmer formalism.

Graphical abstract: Gold nanoparticle-PPE constructs as biomolecular material mimics: understanding the electrostatic and hydrophobic interactions

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Publication details

The article was received on 09 Jul 2008, accepted on 15 Oct 2008 and first published on 04 Dec 2008


Article type: Paper
DOI: 10.1039/B811603B
Citation: Soft Matter, 2009,5, 607-612
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    Gold nanoparticle-PPE constructs as biomolecular material mimics: understanding the electrostatic and hydrophobic interactions

    R. L. Phillips, O. R. Miranda, D. E. Mortenson, C. Subramani, V. M. Rotello and U. H. F. Bunz, Soft Matter, 2009, 5, 607
    DOI: 10.1039/B811603B

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