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  • Functionalized CdSe/ZnS QDs for the detection of nitroaromatic or RDX explosives.

Functionalized CdSe/ZnS QDs for the detection of nitroaromatic or RDX explosives.

Advanced materials (Deerfield Beach, Fla.) (2012-09-26)
Ronit Freeman, Tali Finder, Lily Bahshi, Ron Gill, Itamar Willner
PMID23008159
ABSTRACT

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.