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Detection of TNT and Picric Acid on Surfaces and in Seawater by Using Photoluminescent Polysiloles
Author(s) -
Sohn Honglae,
Calhoun Rebecca M.,
Sailor Michael J.,
Trogler William C.
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010601)40:11<2104::aid-anie2104>3.0.co;2-#
Subject(s) - picric acid , seawater , photoluminescence , chemistry , trinitrotoluene , environmental chemistry , organic chemistry , materials science , oceanography , geology , optoelectronics , explosive material
Nitroaromatic explosives can be detected in a simple and rapid method by the quenching of the photoluminescence of fluorescent polysiloles. Quenching is achieved by electron transfer from the conduction band of the polysiloles to electron‐poor molecules such as picric acid, nitrobenzene, 2,4‐dinitrotoluene (DNT), and 2,4,6‐trinitrotoluene (TNT). Dilute polymer solutions can also be employed as a forensic spray‐on reagent to visualize TNT or picric acid residues under a UV lamp (see picture of the print of a nitrile‐gloved hand that had been in contact with TNT).