| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 741910 | Sensors and Actuators B: Chemical | 2015 | 9 Pages |
•Green synthesis of the ratiometric fluorescence probe.•Ratiometric fluorescent sensing of Al3+ ions and pH values.•Optical nanoprobes for cellular imaging.
We report a green and facile strategy for fabrication of dual-emission carbon nanodots (CDs), and demonstrate their applications in ratiometric sensing and cellular imaging. Dual-emission CDs have been prepared by pyrolysis and microwave treatment of naked oats, providing a novel way for the production of dual luminance CDs without the request of tedious synthetic methodology or the use of toxic/expensive solvents and starting materials. Their intriguing dual fluorescence behavior is observed when the excitation wavelength is between 250 and 310 nm. The well-resolved dual emission bands manifest excitation and temperature dependence. The obtained CDs were applied as a ratiometric fluorescent sensing platform for precise and quantitative detection of Al3+ ions and pH values, and as optical nanoprobes for cellular imaging.
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