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A Simple Assay for Direct Colorimetric Visualization of Trinitrotoluene at Picomolar Levels Using Gold Nanoparticles
Author(s) -
Jiang Ying,
Zhao Hong,
Zhu Ningning,
Lin Yuqing,
Yu Ping,
Mao Lanqun
Publication year - 2008
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/anie.200804066
Subject(s) - trinitrotoluene , naked eye , explosive material , colloidal gold , cysteamine , nanotechnology , visualization , nanoparticle , chemistry , colorimetry , acceptor , materials science , computer science , chromatography , detection limit , organic chemistry , artificial intelligence , physics , condensed matter physics
An explosive situation : By using gold nanoparticles and taking advantage of the donor–acceptor interaction between trinitrotoluene (TNT) and cysteamine, the visualization of TNT can be achieved at picomolar levels (see picture). The color change from red to blue can be seen with the naked eye, which allows sensitive on‐the‐spot detection.