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  • Title: A NIR sensor for cyanide detection and its application in cell imaging.
    Author: Wu WN, Wu H, Wang Y, Zhao XL, Xu ZQ, Xu ZH, Fan YC.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2018 Jun 15; 199():141-145. PubMed ID: 29597069.
    Abstract:
    A novel 'D-π-A' sensor 1 has been designed and prepared via the condensation reaction of 3‑ethyl‑2‑methyl‑1,3‑benzothiazol‑3‑ium iodide and 5‑nitro‑o‑vanillin. Upon treatment with cyanide, sensor 1 exhibited a significant near-infrared (NIR) fluorescence quenching at 663nm. The MS, IR, 1H NMR and DFT methods confirmed that the response of 1 to cyanide is due to the nucleophilic addition reaction, which results in the inhibition of the Intramolecular Charge Transfer (ICT) process in the sensor. Furthermore, sensor 1 was used for the determination of CN- in HeLa cells.
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