Journal
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
Volume 194, Issue -, Pages 61-70Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotobiol.2019.01.004
Keywords
N, P doped CQDs; Photoluminescent; Microwave Digestion; Dopamine Detection; Temperature sensor; Real sample analysis
Categories
Funding
- Analysis and Testing Foundation of Kunming University of Science and Technology
- Kunming University of Science and Technology Post-Doctoral fund [10988869]
- Kunming University of Science and Technology [10988804]
- Yunnan province Post -Doctoral Training Fund [10988833]
Ask authors/readers for more resources
In recent times, fluorescent carbon quantum dots (CQDs) as an optical sensor have attained massive attention owing to their excellent optical properties. In current investigation, our group presented an easy and economical methodology to synthesize the nitrogen and phosphorous doped carbon quantum dots (N, P doped CQDs) for sensing dopamine (DA) and temperature in aqueous medium. The synthesized CQDs were characterized by using XRD, XPS, TEM, UV-Vis, FT-IR and fluorescence techniques. The N, P doped CQDs were synthesized via one-step microwave digestion method by using citric acid, ethylenediamine and urea phosphate as precursors. This method established the noble water solubility, good optical performances and fluorescence thermosensitivity of N, P doped CQDs. Also, N, P doped CQDs demonstrated a wide linear range of 10-500 mu M (R-2 = 0.994) and offered an electrifying detection limit of 0.021 mu M for quantifying the dopamine. Moreover, this sensor possessed a good sensitivity, reversibility and linearity in the range of 10-70 degrees C. In addition, the CQDs sensing system repel the interference from probable foreign substances in real sample analysis, and attained good recoveries, which revealed the tremendous selectivity and adequate accuracy of the carbon quantum dots for sensing dopamine. The proposed N, P doped CQDs are simple as well as effective optical nanosensor and clasps venerable potential to widen the applications in analysis of biomolecules and other areas.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available