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A simple and selective naphthoquinone based fluorescent probe involving plumbagin (Pn=1,4-naphthoquinone) which is a naturally occurring phytochemical is reported for sensing of arginine in aqueous medium. The sensing probe Pn upon binding to Arg, induced a visible color change from light yellow to pink. The 1:1 Pn/Arg complex was characterized by Job's plot, ESI-MS and DFT calculations. This naked...
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