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2015 ; 5
(ä): 37-41
Nephropedia Template TP
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English Wikipedia
MEISENHEIMER COMPLEX BETWEEN 2,4,6-TRINITROTOLUENE AND
3-AMINOPROPYLTRIETHOXYSILANE AND ITS USE FOR A PAPER-BASED SENSOR
#MMPMID26380171
Hughes S
; Dasary SS
; Begum S
; Williams N
; Yu H
Sens Biosensing Res
2015[Sep]; 5
(ä): 37-41
PMID26380171
show ga
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-CH(3) proton/deuteron with
solvent molecules. The red color of TNT-APTES is immediately visible at 1 µM of
TNT.