Naphthalenediimide-Benzothiazole-Based Chemodosimeter for Selective and Sensitive Chromogenic for Cyanide Ion

摘要

A new receptor based on naphthalene diimide-benzothiazole (NDI-1) conjugate was designed and synthesized. The nucleo-philic addition of cyanide ion to the NDI-1 exhibited naked-eye, a colorimetric change is an optical response. The addition of CN ion to the NDI-1 solution display change in red color to green. The UV-Vis spectroscopy measurements establish for the sensing of CN in chloroform solution. Moreover, NDI-1 exhibited high sensitivity and selectivity towards CN ions in the presence of the interfering other anions such as F, Cl, I, Br, HSO4, H2PO4, OAc, ClO4 and HCO3. The detecting mechanism was established by 1HNMR, DFT calculations and Job's plot analysis. Moreover, NDI-1 exhibited very low limit of detection 85 nM.