Molecular recognition of 2,4,6-trinitrotoluene by 6-aminohexanethiol and surface-enhanced Raman scattering sensor

- AHT monolayer on gold nanostructured SERS active surface was used as a new recognition molecule for TNT.
- The availability of the free amine groups and vertical orientation of AHT monolayer was supported by electrochemical desorption and XPS studies.
- AHT:Butanethiol (9:1) mixed monolayer system showed enhanced SERS signal for TNT with the lowest detection limit of 100 fM.
- Selective detection of TNT in soil was demonstrated.