Laser irradiated vortex fluidic mediated synthesis of luminescent carbon nanodots under continuous flow

Carbon nanodots (CDs) with size dependent fluorescence are synthesized from multi-walled carbon nanotubes (MWCNTs) under continuous flow in a vortex fluidic device (VFD) when irradiated by a pulsed laser with a wavelength of 1064 nm, without subsequent passivation procedures. The CDs have a relative...

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Veröffentlicht in:Reaction chemistry & engineering 2018-04, Vol.3 (2), p.164-17
Hauptverfasser: Luo, Xuan, Al-Antaki, Ahmed Hussein Mohammed, Vimalanathan, Kasturi, Moffatt, Jillian, Zheng, Kun, Zou, Yichao, Zou, Jin, Duan, Xiaofei, Lamb, Robert N, Wang, Shujun, Li, Qin, Zhang, Wei, Raston, Colin L
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Sprache:eng
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Zusammenfassung:Carbon nanodots (CDs) with size dependent fluorescence are synthesized from multi-walled carbon nanotubes (MWCNTs) under continuous flow in a vortex fluidic device (VFD) when irradiated by a pulsed laser with a wavelength of 1064 nm, without subsequent passivation procedures. The CDs have a relatively narrow size distribution averaging ca. 6 nm in diameter, and have low cytotoxicity and high colloidal stability with the highest emission intensity of the solution at 450 nm under a 345 nm excitation wavelength. Further downstream processing on the as-processed CDs revealed tunability of the emission from 450 nm to 325 nm. High shear vortex fluidics coupled with NIR affords luminescent carbon dots as a scalable process.
ISSN:2058-9883
2058-9883
DOI:10.1039/c7re00197e