Journal
NEW JOURNAL OF CHEMISTRY
Volume 40, Issue 9, Pages 8110-8117Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nj02107g
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- National Institute of Technology Calicut (NITC)
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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.
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