Chromophore-Containing Polymers for Trace Explosive Sensors

2008 ◽  
Vol 112 (21) ◽  
pp. 8072-8078 ◽  
Author(s):  
Antao Chen ◽  
Haishan Sun ◽  
Anna Pyayt ◽  
Xunqi Zhang ◽  
Jingdong Luo ◽  
...  
Keyword(s):  
Explosive Sensors

Flexible Graphene Sensors for Explosive Trace Detection

2011 ◽  
Author(s):  
Je Kyun Lee ◽  
Steven Green ◽  
Sangyup Song ◽  
Paul Phamduy ◽  
Byungki Kim
Keyword(s):  
Graphene Oxide ◽  
Polyethylene Terephthalate ◽  
Oxide Coating ◽  
Trace Detection ◽  
Closed Container ◽  
Explosive Sensors

This paper presents an explosives sensor. The sensor consists of graphene spray coated onto a substrate with electrodes patterned on the surface. The substrates included glass and flexible polyethylene terephthalate (PET), and the leads were gold and silver respectively. Testing utilizing dinitrotoulene 2,4 (DNT) in a closed container showed the validity of using glass/gold based substrate with a graphene oxide coating as explosive sensors.

scholarly journals Bio-inspired Explosive Sensors and Specific Signatures

2014 ◽  
Vol 87 ◽  
pp. 740-746 ◽  
Author(s):  
Denis Spitzer ◽  
Karine Bonnot ◽  
Laurent Schlur ◽  
Nelly Piazzon ◽  
David Doblas ◽  
...  
Keyword(s):  
Explosive Sensors

Luminescent metal–organic frameworks as explosive sensors

2014 ◽  
Vol 43 (28) ◽  
pp. 10668-10685 ◽  
Author(s):  
Debasis Banerjee ◽  
Zhichao Hu ◽  
Jing Li
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Recent Advancement ◽  
Explosive Sensors ◽  
Metal Organic ◽  
Explosive Sensing ◽  
Organic Framework

A perspective summarizing the recent advancement in explosive sensing by luminescent metal organic framework (LMOF) materials.

scholarly journals Amine Molecular Cages as Supramolecular Fluorescent Explosive Sensors: A Computational Perspective

2016 ◽  
Vol 120 (22) ◽  
pp. 5063-5072 ◽  
Author(s):  
Martijn A. Zwijnenburg ◽  
Enrico Berardo ◽  
William J. Peveler ◽  
Kim E. Jelfs
Keyword(s):  
Molecular Cages ◽  
Computational Perspective ◽  
Explosive Sensors

Nitroaromatic Actuation of Mitochondrial Bioelectrocatalysis for Self-Powered Explosive Sensors

2008 ◽  
Vol 130 (46) ◽  
pp. 15272-15273 ◽  
Author(s):  
Marguerite N. Germain ◽  
Robert L. Arechederra ◽  
Shelley D. Minteer
Keyword(s):  
Explosive Sensors ◽  
Self Powered

Electrochemical Detection of Explosive Compounds in an Ionic Liquid in Mixed Environments: Influence of Oxygen, Moisture, and Other Nitroaromatics on the Sensing Response

2019 ◽  
Vol 72 (2) ◽  
pp. 122 ◽  
Author(s):  
Junqiao Lee ◽  
Debbie S. Silvester
Keyword(s):  
Ionic Liquid ◽  
Square Wave Voltammetry ◽  
Point Of View ◽  
Reduction Peak ◽  
Square Wave ◽  
Reduction Potentials ◽  
Wave Voltammetry ◽  
Explosive Sensors ◽  
Nitroaromatic Explosive ◽  
The Impact

From a security point of view, detecting and quantifying explosives in mixed environments is required to identify potentially concealed explosives. Electrochemistry offers a viable method to detect nitroaromatic explosive compounds owing to the presence of easily reducible nitro groups that give rise to a current signal. However, their reduction potentials can overlap with interfering species, making it difficult to distinguish particular compounds. We have therefore examined the effect of oxygen, moisture, and other nitroaromatic species on the cyclic voltammetry and square wave voltammetry of nitroaromatic compounds of a range of mixed environments, focussing on 2,4,6-trinitrotoluene (TNT) and 2,4-dinitrotoluene (DNT) as model analytes, and using the hydrophobic room-temperature ionic liquid (RTIL) [P14,6,6,6][NTf2] as the solvent. Oxygen (0–20% vol.) minimally affected the current of the first reduction peak of TNT in [P14,6,6,6][NTf2], but significantly affects the current for DNT. The impact of water (0 to 86% relative humidity), however, was much more dramatic – even in the hydrophobic RTIL, water significantly affected the currents of the analyte peaks for TNT and DNT, and gave rise to additional reduction features, further contributing to the current. Additionally, the voltammetry of other related di- and tri-nitro compounds (2,6-dinitrotoluene, 1,3-dinitrobenzene, 2,4,6-trinitrotoluene, 1,3,5-trinitrobenzene, and musk xylene) was also studied to understand how different substituents on the aromatic ring may affect the reduction potentials. A 50:50 mixture of TNT and DNT revealed that both analytes could be separately identified and quantified using square wave voltammetry. Overall, this information is useful in determining the effect of other species on the current signals of electrochemical explosive sensors, and reveals that it may be necessary to dry the aprotic RTIL electrolyte when used in humid environments.

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