کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
741910 | 1462081 | 2015 | 9 صفحه PDF | دانلود رایگان |
• 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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Journal: Sensors and Actuators B: Chemical - Volume 210, April 2015, Pages 533–541