Journal
LUMINESCENCE
Volume 33, Issue 1, Pages 243-248Publisher
WILEY
DOI: 10.1002/bio.3407
Keywords
Ag+ detection; cell imaging; green synthesis; N-doped carbon dots
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Funding
- National Natural Science Foundation of China (NSFC) [51573078]
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An easy hydrothermal synthesis strategy was applied to synthesize green-yellow emitting nitrogen-doped carbon dots (N-CDs) using 1,2-diaminobenzene as the carbon source, and dicyandiamide as the dopant. The nitrogen-doped CDs resulted in improvement in the electronic characteristics and surface chemical activities. N-CDs exhibited bright fluorescence emission and could response to Ag+ selectively and sensitively. Other ions produced nearly no interference. AN-CDs based fluorescent probe was then applied to sensitively determine Ag+ with a detection limit of 5x10(-8) mol/L. The method was applied to the determination of Ag+ dissolved in water. Finally, negligibly cytotoxic, excellently biocompatibile, and highly fluorescent carbon dots were applied for HepG2 cell imaging and the quenched fluorescence by adding Ag+, which indicated its potential applications.
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