ArticleEnvironmental science and pollution research international2018
Amine-functionalized diatom frustules: a platform for specific and sensitive detection of nitroaromatic explosive derivative.
Article in Environmental science and pollution research international, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Diatoms: harnessing nature's microscopic marvels for biosensing and multifaceted applications.Biophysical reviews · 2025Review
- Developing a novel lithium-ion battery anode material via thiol functionalization of diatom frustules plus Ag modification.iScience · 2024Article
- Design and simulation of diatom-based microcantilever immunobiosensor for the early detection of Karnal bunt.3 Biotech · 2020Article
- Recent Advances on Diatom-Based Biosensors.Sensors (Basel, Switzerland) · 2019Review
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5 authors.
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Abstract
In the present study, an attempt was made to develop a proof of concept for the detection of nitroaromatic explosive derivatives through the photoluminescence (PL) quenching process using functionalized diatom frustules as a sensing platform. The diatom frustules are composed of nanostructured, highly porous biogenic silica material and emit strong, visible blue PL upon UV excitation. PL-active biosilica was isolated from the marine diatom Nitzschia sp. and was amine-functionalized to develop a sensing platform. Functionalized diatom frustules were further characterized using field emission scanning electron microscope and a series of spectroscopic methods. When nitroaromatic compounds were bound to the functionalized diatom frustules biosilica, the PL intensity from the functionalized biosilica was partially quenched due to the electrophilic nature of the nitro (-NO) groups. The quenching process confirmed the Meisenheimer complex formation and was investigated by using Fourier transform infrared spectroscopy and time-resolved photoluminescence studies. The developed platform was further evaluated for its sensitivity and specificity, and the limit of detection (LOD) of the assay was determined as 1 μM for a series of nitroaromatic explosive compounds. In conclusion, the developed sensing platform will have great utility in the development of on-site detection platforms for sensitive detection of warfare explosive nitroaromatic compounds from the environment.
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