Here, we describe a new approach for preparation of luminescent lanthanide graphene in the presence of dipicolinic acid (DPA). Hg2+ can competitively bind with DPA which greatly quenches the fluorescence and the resultant complex is able to selectively and sensitively detect cysteine with a detection limit of 5 nM.
Y. Wang, Y. Li, W. Qi and Y. Song, Chem. Commun., 2015, 51, 11022 DOI: 10.1039/C5CC02889B
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