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Journal of Materials Science
Erschienen in: Journal of Materials Science 3/2019

24.09.2018 | Materials for life sciences

Optical detection of anthrax biomarkers in an aqueous medium: the combination of carbon quantum dots and europium ions within alginate hydrogels

verfasst von: Zhan Zhou, Zhuosen Wang, Yiping Tang, Yuhui Zheng, Qianming Wang

Erschienen in: Journal of Materials Science | Ausgabe 3/2019

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Abstract

Bacillus anthracis marker (dipicolinic acid, DPA) is a biological warfare agent. The excessive amounts of the compound would lead to serious problems in human health. It is essential to develop a straightforward and rapid detection technology of DPA. For this reason, an optical sensing platform was established on a robust alginate film. Firstly, green emission CQDs were synthesized via a one-step microwave carbonization method based on citric acid and urea. In the next step, europium ions were employed to chelate the carboxyl groups of CQDs and sodium alginate was selected to assemble the green fluorescent film (CQDs-Eu film). In the presence of DPA, the emission peaks evolved from green to red region. The ratio of I615/I554 linearly increased with the addition of DPA in the range of 1–45 µM with a detection limit as low as 0.17 µM. This CQDs-Eu film-based sensing nanostructure showed its potential applications in the fields of biology and food analysis.
Vorheriger Artikel Synthesis and structure properties of Se and Sr co-doped hydroxyapatite and their biocompatibility
Nächster Artikel DNA-directed enzyme immobilization on Fe3O4 modified with nitrogen-doped graphene quantum dots as a highly efficient and stable multi-catalyst system

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Metadaten
Titel
Optical detection of anthrax biomarkers in an aqueous medium: the combination of carbon quantum dots and europium ions within alginate hydrogels
verfasst von
Zhan Zhou
Zhuosen Wang
Yiping Tang
Yuhui Zheng
Qianming Wang
Publikationsdatum
24.09.2018
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 3/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-018-2955-3

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