4.4 Article

CVD Assisted Hydrophobic Graphene Quantum Dots: Fluorescence Sensor for Aromatic Amino Acids

Journal

CHEMISTRYSELECT
Volume 2, Issue 5, Pages 1999-2005

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201601737

Keywords

Amino Acid; Chemical Vapor Deposition; Fluorescence; Graphene Quantum Dots; Sensors

Funding

  1. Science and Engineering Research Board (SERB), New Delhi [SB/S1/PC-69/2012]
  2. BRNS, Mumbai [34/14/20/2014-BRNS]
  3. SERB, New Delhi

Ask authors/readers for more resources

In this paper, an hydrophobic graphene quantum dots(h-GQDs) based PL sensor was demonstrated which can distinguish between aromatic and non-aromatic amino acids. The h-GQDSs prepared using Chemical Vapour Deposition method from acetylene gas and hydrogen gas was used as cocatalyst. The characterization of h-GQDs was carried out by UV-Visible absorption spectrophotometer, Dynamic Light Scattering, Scanning Electron Microscopy, Fourier Transform Infrared Spectrophotometer, Raman spectroscopy. These CVD assisted h-GQDs form stable dispersion in organic solvents and are hydrophobic in nature. It was observed that photoluminescence (PL) intensity of h-GQDs systems in the presence of aromatic amino acids is enhanced due to electron transfer from aromatic amino acids to h-GQDs whereas with non-aromatic amino acids PL intensity is quenched. Hence h-GQDs systems can selectively distinguish between aromatic and non-aromatic amino acid. The mechanistic insight is also discussed in the paper. Besides fluorescence sensors for aromatic amino acids, the h-GQDs system can also be used as a fluorescence hydrophobic coating material as when coated on glass substrate it shows very high contact angle (107 degrees).

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.4
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available