Functionalized CdSe/ZnS QDs for the Detection of Nitroaromatic or RDX Explosives

Authors

  • Ronit Freeman,

    1. Institute of Chemistry, Center for Nanoscience and Nanotechnologhy, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Phone: 972-2-6585272: Fax: 972-2-6527715
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  • Tali Finder,

    1. Institute of Chemistry, Center for Nanoscience and Nanotechnologhy, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Phone: 972-2-6585272: Fax: 972-2-6527715
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  • Lily Bahshi,

    1. Institute of Chemistry, Center for Nanoscience and Nanotechnologhy, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Phone: 972-2-6585272: Fax: 972-2-6527715
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  • Ron Gill,

    1. Institute of Chemistry, Center for Nanoscience and Nanotechnologhy, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Phone: 972-2-6585272: Fax: 972-2-6527715
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  • Itamar Willner

    Corresponding author
    1. Institute of Chemistry, Center for Nanoscience and Nanotechnologhy, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Phone: 972-2-6585272: Fax: 972-2-6527715
    • Institute of Chemistry, Center for Nanoscience and Nanotechnologhy, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Phone: 972-2-6585272: Fax: 972-2-6527715.
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Abstract

original image

Chemically modified CdSe/ZnS quantum dots (QDs) are used as fluorescent probes for the analysis of explosives, and specifically, the detection of trinitrotoluene (TNT) or trinitrotriazine (RDX). The QDs are functionalized with electron-donating ligands that bind nitro-containing explosives, exhibiting electron-acceptor properties, to the QD surface, via supramolecular donor–acceptor interactions leading to the quenching of the luminescence of the QDs.

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