期刊
LANGMUIR
卷 30, 期 45, 页码 13542-13548出版社
AMER CHEMICAL SOC
DOI: 10.1021/la503969z
关键词
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资金
- Foundation of the Natural Science Foundation of China [21371069, 21301068]
- Specialized Research Fund for the Doctoral Program of Higher Education [20110061110015]
- National High Technology Research and Development Program (863 Program) of China [2013AA031702]
- Special Program of China Postdoctoral Science Foundation [2012T50288]
Nitrogen-doped (N-doped) photoluminescent carbon dots (CDs) were prepared by a one-pot microwaveassisted hydrothermal treatment using histidine as the sole carbon source in the absence of acid, alkali, or metal ions. With a diameter of 2 S nm, the synthesized CDs had apparent lattice fringes and exhibited an excitation-dependent photoluminescent behavior. The CDs were highly yielded, welldispersed in aqueous solution, and showed high photostability in the solutions of a wide range of pH and salinity. They were used as probes to identify the presence of Fel'. ions with a detection limit of 10 riM. With confirmed nontoxicit-y, these CDs could enter the cancer cells, indicating a practical potential for cellular imaging and labeling.
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