New Journal of Chemistry p. 16968 - 16974 (2019)
Update date:2022-08-11
Topics:
Ghosh, Ayndrila
Das, Sujoy
Mandal, Saurodeep
Sahoo, Prithidipa
Both DCNP (nerve gas Tabun mimic) and Cd2+ are extremely toxic to mankind. We have focused our research on quantitative estimation of DCNP and Cd2+ in given water samples. A carbazole-pyrrole conjugate CPC has been designed and synthesized which possesses a unique characteristic feature of detecting two hazardous analytes DCNP and Cd2+ by giving two different optical responses i.e. visual color changes and fluorescence "turn-on" respectively. The PET based chemosensor CPC produces a new compound CPC-1 and a highly fluorescent CPC-Cd2+ complex upon addition of DCNP and Cd2+, respectively. The detection limit of CPC for DCNP and Cd2+ has been estimated to be 7.75 nM and 0.27 μM, respectively, at pH 7.0. Quantum chemical calculations have been executed to demonstrate the electronic properties and the mechanism of the receptor-donor interactions. The concentrations of DCNP and Cd2+ ions in various water samples have been estimated with the help of standard absorbance and fluorescence curves.
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