Detection of TNT and Picric Acid on Surfaces and in Seawater by Using Photoluminescent Polysiloles

Abstract

Nitroaromatische Sprengstoffe können einfach und schnell nachgewiesen werden, indem man das Löschen der Photolumineszenz fluoreszierender Polysilole beobachtet. Das Löschen beruht auf dem Elektronentransfer vom Leitungsband der Polysilole zu elektronenarmen Molekülen wie Pikrinsäure, Nitrobenzol, DNT und TNT. Verdünnte Polymerlösungen können auch als Sprühreagentien in der Spurensicherung zum Nachweis von TNT‐ oder Pikrinsäure‐Rückständen unter einer UV‐Lampe eingesetzt werden (das Bild zeigt den Abdruck einer behandschuhten Hand, die zuvor in Kontakt mit TNT war).

A Simple Assay for Direct Colorimetric Visualization of Trinitrotoluene at Picomolar Levels Using Gold Nanoparticles

“…No change in the color or the spectrum of the Au NPs suspension was observed until the lake water sample and the ACN extract of the soil sample were spiked with 7×10 −9 and 4×10 −9 M TNT, respectively. These results were consistent with those reported previously,2e, 3a,j and suggest the potential application of this method for TNT detection in these environmental matrices.…”

Visual Detection of Trace Nitroaromatic Explosive Residue Using Photoluminescent Metallole‐Containing Polymers

“…Nitroaromatics, such as trinitrotoluene, are oxidizers due to a low‐energy unoccupied π * orbital, which can accept an electron from the excited state of luminescent polymers (14). The detection of nitroaromatic vapor has been achieved using fluorescent polymers, including various functionalized organic polyacetylenes (15), polyphenylenevinylenes (16), and polyphenyleneethynylenes (17), as well as inorganic polysilanes (18) and polymetalloles (19).…”

New Sm (III) and Nd (III) complexes: Synthesis, structural characterization and fluorescent sensing of nitro‐aromatic compounds

“…TNP also known as picric acid is a harmful organic acid and one of the ingredients of explosives. Long‐time exposure to the vapor of TNP causes several health problems and they are toxic to nervous and cardiovascular systems . Many analytical methods such as ion mobility spectroscopy, fluorescence, X‐ray scanning and Raman spectroscopy have been introduced for the sensitive detection of nitro‐aromatic compounds.…”