Ratiometric Sensing of Azithromycin and Sulfide Using Dual Emissive Carbon Dots: A Turn On-Off-On Approach

• Published in: Journal of fluorescence Vol. 35; no. 5; pp. 2979 - 2991
• Main Authors: Mahmoud, Ashraf M., Alqahtani, Yahya S., El-Wekil, Mohamed M., Ali, Al-Montaser Bellah H.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2025; Springer Nature B.V
• Subjects: Analytical Chemistry; Azithromycin - analysis; Azithromycin - chemistry; Azithromycin - urine; Biochemistry; Biological and Medical Physics; Biomedical and Life Sciences; Biomedicine; Biophysics; Biotechnology; Carbon; Carbon - chemistry; Carbon dots; Emission spectra; Emissivity; Fluorescence; Fluorescent Dyes - chemical synthesis; Fluorescent Dyes - chemistry; Fluorescent indicators; Limit of Detection; Modulation; Quantum Dots - chemistry; Quenching; Spectrometry, Fluorescence; Sulfides - analysis; Water sampling; Sulfide; Carbon dots; Biological fluids; Ratiometric; Azithromycin

A novel ratiometric fluorescence probe was developed for the determination of azithromycin (AZM) and sulfide ions based on the differential modulation of red emissive carbon dots (R-N@CDs) and blue emissive carbon dots (B-NS@CDs). The addition of sulfide anion selectively quenched the red emission o...