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https://www.ias.ac.in/article/fulltext/jcsc/128/04/0537-0543

Cyanide ion; naked-eye sensor; colorimetric detection; selective sensing; fluorescent probes.

5-[4-(dimethylamino)benzylidene) pyrimidine-2,4,6(1H,3H,5H)]-trione (DMP-3H), the receptor was synthesized which played a chemosensor role for cyanide ion ($CN^{-}$) in aqueous solution with colorimetricand fluorescence turn-off responses. Upon addition of $CN^{-}$ ion into the solution containing the receptor, acolor change visible to the naked eye was observed from yellow to colourless and also, the fluorescence of the solution was immediately quenched. Moreover, DMP-3H exhibited a selective response to cyanide ion over many other anions such as $F^{-}$, $Cl^{-}$,$ Br^{-}$,$ I^{-}$, $SO^{2-}_{3}$, $OCN^{-}$, $ClO^{-}_{3}$ , $CO^{2-}_3$ , $IO^{-}_{3}$ ,$N^{-}_{3}$, $C_2O^{2-}_{4}$ and $SCN^{???}$. The detection limit toward $CN^{-}$ was $8.1\times 10^{-7}$ mol.L-1, which is satisfactory enough for monitoring $CN^{-}$ levels in physiological and environmental systems.

ABDOLHAMID ALIZADEH^{1 2} SOHRAB GHOUZIVAND¹ MOHAMMAD M KHODAEI¹ MEHDI ARDALANI³

1. Department of Organic Chemistry, Faculty of ChemistryRazi University, Kermanshah 67149, Iran
2. Nanoscience & Nanotechnology Research Center (NNRC)Razi University, Kermanshah 67149, Iran
3. Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah 67149, Iran

Published

Manuscript received

27 December 2015

Manuscript revised

25 January 2016

Accepted

30 January 2016