Details

Autor(en) / Beteiligte

• Guan, Mengting
• He, Haibo
• Li, Ruxing
• Si, Xiaojing
• Peng, Xitian
• Yan, Xiaoxia
• Yang, Zhaosheng
• Nien, Enhsuan
• Lei, Yunyi
• Luo, Liqiang

Titel

Lanthanum ions assisted non-enzymatic ratiometric fluorescence probe for monitoring fenthion residues in agro-product samples

Ist Teil von

• Analytica chimica acta, 2022-12, Vol.1236, p.340579-340579, Article 340579

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In this work, a La3+ assisted glutathione-capped gold nanoclusters and carbon dots (GSH-Au NCs/CDs) nanoplatform for sensitive detection of fenthion (FEN) is fabricated. The fluorescence response of GSH-Au NCs significantly increases due to aggregation-induced emission enhancement (AIEE) effect induced by La3+, which is further enhanced with adding FEN due to the coordination between La3+ and FEN. Taking the fluorescence intensity of CDs as the signal background, the ratiometric fluorescence of GSH-Au NCs and CDs has a good linear relationship with the FEN concentration from 0.01 to 1.10 μg mL−1, and detecting FEN exhibits a good sensitivity at a low detection limit of 6.74 ng g−1. The La3+ assisted GSH-Au NCs/CDs nanoplatform demonstrates desirable selectivity and applicability for monitoring trace level of FEN in fruit and vegetable samples. The non-enzymatic strategy by taking advantage of successive AIEE of GSH-Au NCs has a great potential for facile screening organophosphate pesticides in agro-products. [Display omitted] •A non-enzymatic ratiometric fluorescence probe for FEN is facilely fabricated.•Sensitive detection of FEN is realized by La3+ induced successive AIEE of Au NCs.•The La3+-CDs/Au NCs system is applicable for FEN residue analysis in agro-products.