Abstract
Here, we report Green Fluorescent Protein (GFP) chromophore analog as a turn-on fluorescent chemodosimeter (THBI) for selective detection of cyanide in water, on solid state and in living cells. The detection limit was found to be 0.17 μM (4.5 ppb). The time dependent study revealed that there is a rapid enhancement in fluorescence intensity (in less than 5s) and was constant over the period of 1 h. Cell imaging data exhibited that THBI was successfully crossed cell membrane and visualized fluorescence response in live HCT cells.
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