An interesting spectroscopic method for chromofluorogenic detection of cyanide ion in aqueous solution: Disruption of intramolecular charge transfer (ICT)

Journal of Chemical Sciences

Abdolhamid Alizadeh1 2¹  Mohammad M Khodaei¹  Sohrab Ghouzivand¹  Mehdi Ardalani² 

[1] Department of Organic Chemistry, Faculty of Chemistry, Razi University, Kermanshah 67149, Iran$$;Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah 67149, Iran$$

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

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

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 colorimetric and fluorescence turn-off responses. Upon addition of CN− ion into the solution containing the receptor, a color 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$_{2}$O$^{2−}_{4}$ and SCN−. The detection limit toward CN− was 8.1 × 10−7 mol.L−1, which is satisfactory enough for monitoring CN− levels in physiological and environmental systems.

【 授权许可】

Unknown