Journal
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 105, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.msec.2019.110132
Keywords
Fungus fibers; N,S-self-doped carbon dots; Biosynthesis; Tetracyclines; Cellular imaging
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Funding
- National Natural Science Foundation of China [31670592]
- Natural Science Funds for Distinguished Young Scholar of Heilongjiang Province [JQ2019C001]
- Central University Basic Scientific Research Business Expenses Special Funds Project of China [2572017E803]
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In this work, nitrogen and sulfur dual-doped carbon quantum dots (N,S-CDs) from naturally renewable biomaterial fungus fibers were prepared by a biosynthesis and hydrothermal method. The N,S-CDs displayed good water solubility, excellent stability, high quantum yield (QY = 28.11%) as well as remarkable features for fluorescence quenching-based detection and cellular imaging of cancer cells. It was worth mentioning that the heteroatoms doped carbon quantum dots made from the fungus fibers had a satisfactory QY and could be used as a selective, efficient, and sensitive fluorescent probe to determine tetracyclines by the synergistic effects of static quenching and internal filtration effect. The probe demonstrated a wide linear range and low detection limit. For tetracycline, the linear range was 0.5 mu M to 47.6 mu M, and the corresponding detection limit was 15.6 nM. Significantly, the test papers prepared by using N,S-CDs could detect tetracyclines in aquiculture wastewater rapidly. The produced N,S-CDs did not affect the cell viability and showed great promises for cellular imaging.
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