Tuning of carbon dots emission color for sensing of Fe3+ ion and bioimaging applications

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Title
Tuning of carbon dots emission color for sensing of Fe3+ ion and bioimaging applications
Author(s)
Kailasa, Suresh; Ha, Siyoung; Baek, Seung Hoon; Phan Le Minh Tu; Sangjun Kim; Kwak, Kyungwon; Park, Tae Jung
Publication Date
2019-05
Journal
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC MATERIALS SENSORS AND SYSTEMS, v.98, no., pp.834 - 842
Publisher
ELSEVIER SCIENCE BV
Abstract
Herein, we report a facile one-step synthetic strategy for fabrication of three (blue, green and yellow) fluorescent color carbon dots (CDs) from tomato (Solanum lycopersicum). The as-synthesized CDs showed emission peaks at 450, 520 and 560 nm for blue, green and yellow color CDs when excited at 370, 420 and 460 nm, respectively. Using tomato as a carbon source, the fabricated three fluorescent color CDs showed good water dispersity and high quantum yield. The analytical performances of three fluorescent color CDs are evaluated by detecting Fe3+ ion in biofluids and iron tablets. Upon the addition of Fe3+ ion under optimal conditions, the fluorescence intensity of three fluorescent color CDs was quenched linearly over the range of 0.1 to 2.0 μM. This method opens a new analytical strategy to quantify Fe3+ ion in iron tablets and biofluids with high sensitivity. Further, the uptake of three fluorescent color CDs into HeLa cells was confirmed by confocal laser scanning microscopy. Intracellular experiments demonstrated that the three fluorescent color CDs were effectively internalized the cells and show excellent biocompatibility and low toxicity, suggesting that the CDs can be used as good candidates for biomedical applications. © 2019 Elsevier B.V
URI
https://pr.ibs.re.kr/handle/8788114/5637
ISSN
0928-4931
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > Journal Papers (저널논문)
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