Details

Autor(en) / Beteiligte

• Madrakian, Tayyebeh
• Maleki, Somayeh
• Gilak, Sahar
• Afkhami, Abbas

Titel

Turn-off fluorescence of amino-functionalized carbon quantum dots as effective fluorescent probes for determination of isotretinoin

Ist Teil von

• Sensors and actuators. B, Chemical, 2017-08, Vol.247, p.428-435

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •Amino-functionalized carbon quantum dots were used as effective fluorescence probes.•The fluorescence of N-CQDs was quenched in the presence of isotretinoin.•The quenching of N-CQDs induced by isotretinoin is static quenching.•Isotretinoin was measured at 0.03mmolL−1 with good sensitivity and selectivity.•The probe has been successfully applied in serum and pharmaceutical samples. Amino-functionalized carbon quantum dots (N-CQDs) as effective fluorescent probes were synthesized by a facile one-pot hydrothermal method via gluconic acid and N-methylethylenediamine as carbon and nitrogen sources respectively. Then the N-CQDs were applied to determine isotretinoin (INN). The synthesized N-CQDs were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), dynamic light scattering (DLS), Fourier-transform infrared spectroscopy (FT-IR), UV-vis absorption and photoluminescence spectroscopy. As the emission of N-CQDs is efficiently quenched by INN, the as-prepared N-CQDs are employed as a highly sensitive and selective probe for INN detection. Under the optimal conditions, linear response was observed in the range of 0.08–70.0μmolL−1 for INN determination. The calculated detection limit was 0.03μmolL−1. The established method showed a good selectivity for INN among several kinds of ions and biomolecules. The results of this study showed that the as-synthesized N-CQDs could be successfully applied to determine INN in blood serum and pharmaceutical samples.