title: MEISENHEIMER COMPLEX BETWEEN 2,4,6-TRINITROTOLUENE AND 3-AMINOPROPYLTRIETHOXYSILANE AND ITS USE FOR A PAPER-BASED SENSOR.
abstract: 2,4,6-Trinitrotoluene (TNT) forms a red-colored Meisenheimer complex with 3-aminopropyltrenthoxysilane (APTES) both in solution and on solid phase. The TNT-APTES complex is unique since it forms yellow-colored complexes with 2,4,6-trinitrophenol and 4-nitrophenol, and no complex with 2,4-dinitrotoluene. The absorption spectrum of TNT-APTES has two absorption bands at 530 and 650 nm, while APTES complexes with 2,4,6-trinitrophenol and 4-nitrophenol have absorption maxima at around 420 nm, and no absorption change for 2,4-dinitrotoluene. The TNT-APTES complex facilitates the exchange of the TNT-CH3proton/deuteron with solvent molecules. The red color of TNT-APTES is immediately visible at 1 µM of TNT.
authors.affiliation: Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217.
authors.forename: Shantelle
authors.initials: S
authors.lastname: Hughes
authors.affiliation: Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217.
authors.forename: Samuel S R
authors.initials: SS
authors.lastname: Dasary
authors.affiliation: Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217.
authors.forename: Salma
authors.initials: S
authors.lastname: Begum
authors.affiliation: Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217.
authors.forename: Nya
authors.initials: N
authors.lastname: Williams
authors.affiliation: Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217.
authors.forename: Hongtao
authors.initials: H
authors.lastname: Yu
keywords: Meisenheimer Complex; TNT detection; nitroaromatics