Published July 2015 | Version v1
Journal article Metadata-only

Reduced graphene oxide conjugate thymine as a new probe for ultrasensitive and selective fluorometric determination of mercury(II) ions

Creators

  • 1. Department of Chemistry, Assuit University, Assuit, 71515 (Egypt)
  • 2. Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan (China)
  • 3. Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan (China)
  • 4. Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University and Academia Sinica, Kaohsiung, 80424, Taiwan (China)
  • 5. Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan (China)
  • 6. School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan (China)

Description

We report on a highly sensitive and remarkably selective fluorometric assay for mercury(II) ion. It is based on the formation of a complex between thymine (T) and Hg(II) to form the [Hg(T)2(H2O)2]n complex on the surface of reduced graphene oxide (rGO). This causes the fluorescence emission of rGO (peaking at 550 nm) to be quenched. Under optimal conditions, quenching is selective and fluorescence intensity is linearly related to the concentration of Hg(II) in the range between 100 and 700 nM. The limit of detection is 5 nM. In addition to its sensitivity and selectivity, the method is simple and direct. (author)

Additional details

Identifiers

DOI
10.1007/s00604-015-1461-4;

Publishing Information

Journal Title
Microchimica Acta (Online)
Journal Volume
182
Journal Issue
9-10
Journal Page Range
p. 1609-1617
ISSN
1436-5073

INIS

Country of Publication
Austria
Country of Input or Organization
Austria
INIS RN
47046129
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
FLUORESCENCE; FLUORESCENCE SPECTROSCOPY; GRAPHENE; MERCURY COMPLEXES; MERCURY IONS; NANOCHEMISTRY; OXIDES; SENSITIVITY; SPECIFICITY; THYMINE
Descriptors DEC
AZINES; CARBON; CHALCOGENIDES; CHARGED PARTICLES; CHEMISTRY; COMPLEXES; ELEMENTS; EMISSION; EMISSION SPECTROSCOPY; HETEROCYCLIC COMPOUNDS; HYDROXY COMPOUNDS; IONS; LUMINESCENCE; NONMETALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; PHOTON EMISSION; PYRIMIDINES; SPECTROSCOPY; URACILS