A ratiometric fluorescence and colorimetric dual-mode sensing platform based on sulfur quantum dots and carbon quantum dots for selective detection of Cu2

• Published in: Analytical and bioanalytical chemistry Vol. 414; no. 7; pp. 2471 - 2480
• Main Authors: Zhang, Hanqiang, Li, Yufei, Lu, Haixin, Gan, Feng
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2022; Springer Nature B.V
• Subjects: absorbance; Analytical Chemistry; Biochemistry; Carbon; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; color; Colorimetry; Copper; detection limit; Emission spectra; Emissions; Fluorescence; Food Science; Laboratory Medicine; Monitoring/Environmental Analysis; o-Phenylenediamine; Phenylenediamine; Quantum dots; Research Paper; Sulfur; Ultraviolet radiation; Ratiometric fluorescence; Sulfur quantum dots; Carbon quantum dots; Copper ions; Detection; Colorimetric

A new dual-mode ratiometric fluorescence and colorimetric probe for selective determination of Cu 2+ was developed based on blue-emission sulfur quantum dots (SQDs) and yellow-emission carbon quantum dots (CQDs). The fluorescence and absorbance of CQDs increased in the presence of Cu 2+ due to the C...