Green synthesis of graphitic carbon nitride nanosheet (g-C 3 N 4 ) and using it as a label-free fluorosensor for detection of metronidazole via quenching of the fluorescence.

Analytical methods in food additives determination: Compounds with functional applications.

Highly biocompatible phenylboronic acid-functionalized graphitic carbon nitride quantum dots (g-CNQDs/PBA) were prepared by a simple hydrothermal process and used as a glucose sensing fluorescence material. Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and transmission electron microscopy were used to characterize chemical and physical structures of g-CNQDs/PBA. The quantum yield (QY) of g-CNQDs/PBA was as high as 67% when measured using quinine sulfate as a standard, which is the highest QY value ever reported for fluorescent g-CNQDs. The g-CNQDs/PBA exhibited two wide linear regions in the range of 25 nM – 1 μM and 1 μM – 1 mM with a detection limit as low as 16 nM. In addition, it showed excellent selectivity in the presence of various interfering reagents as well as very low cellular toxicity and excellent bio-imaging properties. Overall, the g-CNQDs/PBA fabricated in this study can be a promising candidate for a range of clinical diagnostics and biomedical applications.

Highly biocompatible phenylboronic acid-functionalized graphitic carbon nitride quantum dots for the selective glucose sensor

Electrochemically prepared oxygen and sulfur co-doped graphitic carbon nitride quantum dots for fluorescence determination of copper and silver ions and biothiols.

https://iopscience.iop.org/article/10.1149/2.0192003JES/pdf

Meijuan Shi

Papers

Detection of Ag(+) using graphite carbon nitride nanosheets based on fluorescence quenching.