Detection of high-energy compounds using photoluminescent silicon nanocrystal paper based sensors.
Luminescent silicon nanocrystals (Si-NCs) surface functionalized with dodecyl groups were exposed to solutions of nitroaromatic compounds including nitrobenzene, nitrotoluene, and dinitrotoluene. It was found that Si-NC luminescence was quenched upon exposure to nitroaromatics via an electron transfer mechanism as indicated by Stern-Volmer analysis. This quenching was exploited and a straightforward paper-based Si-NC sensor was developed. This paper motif was found to be sensitive to solution, vapor, and solid phase nitroaromatics, as well as solution borne RDX and PETN.
Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada. jveinot@ualberta.ca.
Christina M
CM
Gonzalez
Muhammad
M
Iqbal
Mita
M
Dasog
Davin G
DG
Piercey
Ross
R
Lockwood
Thomas M
TM
Klapötke
Jonathan G C
JG
Veinot