Comparison of fluorescence and QCM technologies: example of explosives detection with a pi-conjugated thin film.
A pi-conjugated compound was synthesized as a sensitive material for explosives detection. The detection of vapors of 2,4-dinitrotoluene was demonstrated with quartz crystal microbalance (QCM) and fluorescence transduction methods. The fluorescence intensity monitoring shows a higher sensitivity and selectivity than the monitoring of the QCM frequency. Both methods appear to be synergic when used simultaneously as the sensor helps to discriminate interferent vapors from nitroaromatics.
Clavaguera
Simon
S
CEA Le Ripault, SMEO, BP 16, 37260 Monts, France.
Montméat
Pierre
P
Parret
Frederic
F
Pasquinet
Eric
E
Lère-Porte
Jean-Pierre
JP
Hairault
Lionel
L