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

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, exhibiti...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2012-12, Vol.24 (48), p.6416-6421
Main Authors: Freeman, Ronit, Finder, Tali, Bahshi, Lily, Gill, Ron, Willner, Itamar
Format: Article
Language:English
Subjects:
Cadmium Compounds - chemical synthesis
Cadmium Compounds - chemistry
donor-acceptor complex
explosives
Fluorescent Dyes - chemical synthesis
Fluorescent Dyes - chemistry
Molecular Structure
nanobiotechnology
nanoparticles
Quantum Dots
Selenium Compounds - chemical synthesis
Selenium Compounds - chemistry
Sulfides - chemical synthesis
Sulfides - chemistry
Triazines - analysis
Trinitrotoluene - analysis
Zinc Compounds - chemical synthesis
Zinc Compounds - chemistry
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Summary: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.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201202793