Green synthesized carbon quantum dots from Prosopis juliflora leaves as a dual off-on fluorescence probe for sensing mercury (II) and chemet drug

Materials Science & Engineering. C, Materials for Biological Applications
Nahid Pourreza, Matineh Ghomi

Abstract

In this article, a facile and green dual fluorescence sensor was developed for mercury and chemet as an anti-poisoning drug for heavy metal ions. The method is based on "off-on" fluorescence of carbon quantum dots (CQDs) prepared from Prosopis juliflora leaves as a green and low cost source. The synthesis of CQDs was easily performed with a rapid one pot process and the prepared CQDs exhibited a blue luminescence with a 5% quantum yield. The off fluorescent is observed in the presence of different concentrations of mercury (II) that is specifically recovered with the addition of chemet. The gradually recovered fluorescence is due to the high affinity of chelating property of succimer drug towards mercury (II) with a good restoration. Under the optimized condition, two linear calibrations were validated in the range of 5-500 ng mL-1 and 2.5-22.5 ng mL-1 for Hg (II) and chemet, respectively. The limit of detection (LOD) based on 3Sb was 1.26 ng mL-1 (or 6.3 nM) for Hg (II) and 1.4 ng mL-1 for chemet. The relative standard deviation of the fluorescent probe for 50 ng mL-1 of Hg (II) and 10 ng mL-1 of chemet was 4.5% and 1.3% (n = 10), respectively. This methodology was applied to successful measurements of Hg (II) and chemet in th...Continue Reading

Citations

Jun 21, 2020·Biosensors·Muhammad ZulfajriGenin Gary Huang
Jan 9, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Chaoshuai HuXuefei Zhao
Oct 16, 2020·Critical Reviews in Analytical Chemistry·Mustafa Oguzhan CaglayanSamet Şahin
May 14, 2021·Luminescence : the Journal of Biological and Chemical Luminescence·Nurul Amalia HumaeraDahlang Tahir
Jun 12, 2021·Journal of Fluorescence·Nima Ambika MadhusoodananSubodh Ganesanpotti

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