One-step synthesis of a carbon dot-based fluorescent probe for colorimetric and ratiometric sensing of tetracycline

Abstract

Carbon quantum dots (CDs) with blue fluorescence were synthesized by Indole-3-butyric acid and L-tryptophan using one-step hydrothermal method. CDs were further employed as a fluorescent sensor with high selectivity for...

A comprehensive review on multi-colored emissive carbon dots as fluorescent probes for the detection of pharmaceutical drugs in water

“…Therefore, there is an urgent need to detect such drugs due to environmental safety and human health concerns. Among the available detection techniques, the fluorometric method has noteworthy aspects that make it special, such as simple operation, excellent selectivity, and sensitivity 36,106–108 Herein, we have described the sensing of different types of drugs, including antibiotics, anticancer drugs, vitamins, antiseptic drugs, anaesthetic drugs, neurotransmitters and hypnotic drugs, with C-dots via the simple modulation of their fluorescence properties.…”

“…Xue et al explained the sensing of tetracycline via colorimetric and fluorimetric methods. 106 Bluish violet–fluorescent C-dots synthesized using indole-3-butyric acid and l -tryptophan were modified to yellow after the interaction with tetracycline. Amino and carboxyl groups present on the C-dot surface interacted with the hydroxyl and carbonyl groups of tetracycline, leading to fluorescence and colorimetric changes.…”

“…Tetracycline (TC) is an antibiotic that is used in animal husbandry and aquaculture to treat both Gram-positive and Gram-negative bacterial infections. 106 Overdose or long-term dosage of TC leads to the accumulation of TC residues in the human body through the meat or milk of treated animals. 7 Gradually, it causes serious issues like allergic infections, liver damage, and bacterial resistance.…”

Polyvinylpyrrolidone-passivated fluorescent Iron oxide quantum dots for turn-off detection of tetracycline in biological fluids

“…Specifically, QDs have been widely applied for the detection of a wide range of biomolecules, therapeutic drugs, peptides, and heavy metals [ 20 – 22 ]. Numerous QDs have also been constructed for detecting antibiotics, including TCy [ 23 – 28 ]. For example, Lu’s group reported a top-down method of synthesizing sulfur QDs through an assembly–fission reaction with a quantum yield of 6.3%; the method requires a long synthesis duration (up to 72 h) [ 25 ].…”