Detection of energetic materials via polyaniline and its different modified forms

Abstract

The detection techniques for traces of energetic materials (EMs) is achieved using fact interaction between fluorescent polymers and EMs. Researchers have designed various fluorophores for explosives detection worldwide. In present study, PAni, DBSA doped PAni (D-PAni), gamma-Fe(2)O(3)PAni composite (Fe-PAni), were synthesized and collectively used terminology as modified PAnis. This were employed for trace detection of EMs like TNT, RDX, PETN, and HNIW/CL-20 and compared outcome with our earlier results of doped PAnis. All the synthesized PAnis were characterized by FT-IR, X-ray diffraction (XRD) and resonance Raman studies, UV-Visible, and photoluminescence (PL). The PL studies showed that quenching is selective and sensitive at ppm level (LOD about 0.04-1.50 mu mL(-1)) and Fe-PAni emerged as a potential sensor (LOD; 0.092 +/- 0.07 mu mL(-1)). The formation of polaron from bipolaron, the existence of exciton and intermolecular interactions were confirmed and evaluated from the spectrochemical studies.