期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 223, 期 -, 页码 689-696出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.09.081
关键词
Carbon dots; Fe3+; Cell imaging; Optical sensor
资金
- National Key Basic Research Project (973 Program) [2011CB911002]
- Southwest University [SWU113112, SWU113111]
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Wuhan University
Novel fluorescent nitrogen and sulfur co-doped carbon dots (N,S,C-dots) were synthesized by hydrothermal treatment of garlic. It was confirmed that the prepared fluorescent nanodots were doped with nitrogen and sulfur in the format of pyridinic-N, pyrrolic-N and thiophene-S. The N,S,C-dots displayed strong fluorescence with quantum yield of 13%, and the fluorescence can be efficiently quenched by Fe3+. Based on the results, Fe3+ sensor was successfully developed and utilized to detect Fe3+ in environmental waters with excellent sensitivity and repeatability. Eventually, the carbon dots were applied for cell imaging, demonstrating their potential toward diverse applications. (C) 2015 Elsevier B.V. All rights reserved.
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