Abstract
The use of 8-hydroxypyrene-1,3,6-trisulfonic acid trisodium salt (HPTS) as a colorimetric and green turn-on fluorescent probe for the recognition of arginine and lysine in aqueous solution is described. The limit of detection (LOD) was found to be 1.941×10−6M, whereas for Lys the LOD was 3.106×10−6M, respectively. Interestingly, the probe also shows reversibility by addition of tetrabutylammonium phosphate (TBAP).
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