Fluorometric determination of hydroquinone by using blue emitting N/S/P-codoped carbon dots

N/S/P-codoped carbon dots (CDs) are shown to be a viable fluorescent probe in a turn-off-on fluorometric assay for hydroquinone (HQ). The preparation of CDs was carried out using a one-step hydrothermal reaction starting with glyoxal and isocarbophos. The method is based on the formation of ground s...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2018-12, Vol.185 (12), p.550-9, Article 550
Main Authors: Wang, Yongping, Yue, Qiaoli, Tao, Lixia, Zhang, Cong, Li, Chen-Zhong
Format: Article
Language:English
Subjects:
Analytical Chemistry
Carbon dots
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Fluorescence
Fluorescent indicators
Hydroquinone
Hydrothermal reactions
Microengineering
Nanochemistry
Nanotechnology
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Summary:N/S/P-codoped carbon dots (CDs) are shown to be a viable fluorescent probe in a turn-off-on fluorometric assay for hydroquinone (HQ). The preparation of CDs was carried out using a one-step hydrothermal reaction starting with glyoxal and isocarbophos. The method is based on the formation of ground state complexes between CD and Fe(III) which leads to quenching of blue fluorescence (with excitation/emission peaks at 363/448 nm). On addition of HQ, it will be oxidized by Fe(III) upon which fluorescence recovers. This turn-off-on system can be utilized to quantify HQ. A linear relationship exists between fluorescence recovery and HQ concentration in range between 0.56 and 375 μM. The limit of detection is 0.16 μM. The assay was successfully applied to the determination of HQ in spiked water samples and developer samples. Graphical abstract Fluorometric determination of hydroquinone (with good selectivity over catechol and resorcinol) by using blue-emitting N/S/P-codoped carbon dots and the quenching effect of Fe(III).
ISSN:0026-3672
1436-5073
DOI:10.1007/s00604-018-3082-1