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Synthesizing a nano-composite of BSA-capped Au nanoclusters/graphitic carbon nitride nanosheets as a new fluorescent probe for dopamine detection
- Source :
- Analytica Chimica Acta. 942:112-120
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- A strong red fluorescent nanocomposite, consisting of graphite-like carbon nitride nanosheets (g-C3N4 NSs) and serum albumin-capped Au nanoclusters (AuNCs), was synthesized. Dopamine (DA) can quench the red fluorescence of the nanocomposite, based on the Forster resonance energy transfer (FRET) mechanism. In this quenching process, the energy is transferred from the fluorescent g-C3N4 NSs-AuNCs to the oxidized DA quinine molecules (DA is easily oxidated to form DA quinine in air). The red fluorescence emission at 420 nm decreases dramatically and the quenching ratio (F0 – F)/F0 is linearly related to the concentration of DA in the range of 0.05–8.0 μmol L−1 with a detection limit of 0.018 μmol L−1 (S/N = 3). Additionally, this sensor has a potential of application to assay the DA in the real samples, such as human serum and human urine.
- Subjects :
- Dopamine
Analytical chemistry
Metal Nanoparticles
02 engineering and technology
010402 general chemistry
Photochemistry
01 natural sciences
Biochemistry
Nanocomposites
Analytical Chemistry
Nanoclusters
chemistry.chemical_compound
Microscopy, Electron, Transmission
X-Ray Diffraction
Limit of Detection
Nitriles
Humans
Environmental Chemistry
Carbon nitride
Spectroscopy
Fluorescent Dyes
Detection limit
Quenching
Nanocomposite
Spectrum Analysis
Graphitic carbon nitride
Serum Albumin, Bovine
021001 nanoscience & nanotechnology
Fluorescence
0104 chemical sciences
Förster resonance energy transfer
chemistry
Gold
0210 nano-technology
Subjects
Details
- ISSN :
- 00032670
- Volume :
- 942
- Database :
- OpenAIRE
- Journal :
- Analytica Chimica Acta
- Accession number :
- edsair.doi.dedup.....6a18e9038e925dc27bc4588bd605e912