A naked-eye selective detection of cyanide ion: studies on the effect of chromophores and spacers on ditopic receptors |
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Authors: | Kumar Vinod Rana Hemlata Kaushik M P |
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Institution: | Process Technology Development Division, Defence R & D Establishment, Jhansi Road, Gwalior 474002, India. |
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Abstract: | A series of novel thiourea based receptors (1-12) with different signaling units and spacers have been synthesized for the detection of cyanide ion. Among these receptors, 4,4'-bis-3-(4-cyanophenyl)thiourea]diphenyl sulfide 6 and 4,4'-bis-3-(3-cyanophenyl)thiourea]diphenyl sulfide 9 exhibited selective detection of cyanide by the naked-eye as well as by UV-Vis spectroscopy. Furthermore, the chemosensor is insensitive to the presence of other environmentally relevant anions. The chromogenic transformation permits the detection of cyanide (TBA(+) and K(+) salts) in the natural environment. |
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