2026-10-15T03:35:04Z https://www.scidb.cn/oai

10.57760/sciencedb.07343 2023-02-13T14:08:39Z

2023-02-13 A novel SERS selective detection sensor for trace trinitrotoluene based on meisenheimer complex of monoethanolamine molecule doi:10.57760/sciencedb.07343 en Trinitrotoluene (TNT) is a primary component in chemical explosives, making them a common focus in public safety detection. However, it is very difficult to achieve selective and sensitive detection of the TNT molecule in practical application. In the present study, a simple surface enhanced Raman scattering (SERS) sensing based on monoethanolamine (MEA) - modified gold nanoparticles (Au NPs) was expanded for high selectivity and sensitive detecting of TNT in an envelope, luggage, lake water, and clothing through a quickly sampling and detection process. The monoethanolamine molecule based on Meisenheimer complex lights up ultra-high Raman scattering of a nonresonant molecule on the superficial coat of gold nanoparticles. Using this detection sensor, a molecular bridge can be established to selectively detect trinitrotoluene with a detection limit of 21.47 pM. We were able to rapidly identification trinitrotoluene molecule with a powerful selective over the familiar interfering substances nitrophenol, picric acid, 2,4-dinitrophenol, and 2,4-dinitrotoluene. The outcome in this work supply an efficient solution to the test of trinitrotoluene and to establishing a SERS sensor analytical strategy. The studies have demonstrated that the MEA-Au NPs based SERS sensing can be potentially used in field detection the trace amount of chemical explosives for public security. Surface enhanced Raman scattering; Monoethanolamine; Trinitrotoluene; Meisenheimer complex; Sensor Lin Dongyue Dong Ronglu Li Pan Li Shaofei Ge Meihong Zhang Yunfeng Yang Liangbao Xu Weiping PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank