A coumarin-based fluorescent probe containing both acrylate moiety and an allyl substituent was developed for distinguishing cysteine from homocysteine. The maximum absorption wavelength of the probe showed a bathochromic shift upon addition of cysteine and the colour changed from colourless to yellow. The maximum fluorescence emission at 462 nm of the probe was dramatically enhanced upon addition How to cite this article: Chu Y, Cen Y, Song Y, et al. A novel coumarin-based fluorescent probe for selective detection of cysteine over homocysteine.
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