Microwave-assisted hydrothermal synthesis of UV-emitting carbon dots from tannic acid

We report herein an easy, facile, economic and solution-based synthesis protocol for UV-photoluminescent carbon dots (CDs) using tannic acid, an environmentally benign, in-expensive and readily available precursor, following a microwave-assisted hydrothermal route. The as-synthesized CDs exhibited e...

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Published in:New journal of chemistry 2016-01, Vol.4 (9), p.811-8117
Main Authors: Joseph, Julin, Anappara, Aji A
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Language:English
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description We report herein an easy, facile, economic and solution-based synthesis protocol for UV-photoluminescent carbon dots (CDs) using tannic acid, an environmentally benign, in-expensive and readily available precursor, following a microwave-assisted hydrothermal route. The as-synthesized CDs exhibited excellent aqueous solubility and displayed excitation-wavelength independent emission at 370 nm. The CDs were explored for highly selective and extremely sensitive detection of picric acid in aqueous media exploiting luminescence quenching. The detection limit of the as-synthesized CDs towards picric acid was about 0.6 pM, and the linear range extends from 0 to 10 nM. UV-photoluminescent carbon dots were synthesized through a facile process and were used as fluorophores for the highly selective and sensitive detection of picric acid.
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title Microwave-assisted hydrothermal synthesis of UV-emitting carbon dots from tannic acid
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