Carbon quantum dots as a sensitive fluorescent probe for quantitation of pregabalin; application to real samples and content uniformity test.
Mohamed A Abdel HamidMokhtar M MabroukHytham M AhmedBassant SamyHany A BatakoushyPublished in: Luminescence : the journal of biological and chemical luminescence (2021)
A novel optical nano-sensor for the detection of pregabalin (PG) in its pharmaceutical (Lyrica®) capsules and biological samples was reported. For the fabrication of highly fluorescent carbon quantum dots (CQDts), a simple green hydrothermal approach was described, and ascorbic acid (AA) was used as a carbon source. The obtained CQDts were confirmed by spectroscopic characterization such as transmission electron microscopy (TEM) and Fourier-transform infrared (FTIR) spectra. The synthesized CQDts were capped by alcohol to form yellow emitters, showing strong fluorescent emission at 524 nm, and excitation at 356 nm. The method is based on fluorescence quenching of CQDts in the presence of PG. The proposed analytical method was validated according to ICH guidelines. PG was successively assayed in the concentration range of 4.0 to 100 μg/ml). The detection and quantitation limits were 1.12 and 3.39 μg/ml, respectively. The proposed method could be used in both quality control and pharmacokinetic research for the studied drug.
Keyphrases
- quantum dots
- energy transfer
- living cells
- fluorescent probe
- quality control
- sensitive detection
- label free
- electron microscopy
- ms ms
- mass spectrometry
- liquid chromatography
- loop mediated isothermal amplification
- photodynamic therapy
- liquid chromatography tandem mass spectrometry
- neuropathic pain
- single molecule
- high performance liquid chromatography
- high resolution
- tandem mass spectrometry
- solid phase extraction
- real time pcr
- adverse drug
- risk assessment
- clinical practice
- density functional theory
- electronic health record
- high speed