Construction of a luminescent square-like Cd6Eu2 nanocluster for the quantitative detection of 2, 6-dipicolinic acid as an anthrax biomarker. Issue 9 (8th February 2022)

• Record Type: Journal Article
• Authors: Leng, Xilong; Shi, Dongliang; Yang, Xiaoping; Zhang, Zhen; Li, Hao; Cheng, Yuebo; Ma, Yanan; Schipper, Desmond
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 9(2022)
• Page Start: 3510
• Page End: 3516
• Publication Date: 2022-02-08
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1tc05929g
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A luminescent square-like Cd6 Eu2 nanocluster was constructed with the use of two organic ligands, and it exhibits potential for practical application in the qualitative and quantitative detection of 2, 6-dipicolinic acid (DPA) as an anthrax biomarker. Abstract : Two Cd–Ln (Ln = Ho(iii ) and Eu(iii )) complexes 1 and 2 were synthesized using two organic ligands. The square-like Cd6 Eu2 nanocluster 2 exhibits a luminescence response to DPA through the enhancement of lanthanide emission, which can be observed directly with naked eyes. The response mechanism can be explained by the "antenna effect", and described using a static enhancement process. The detection limit of 2 to DPA is 8.7 × 10 −6 M, which is lower than the infectious dosage of anthrax spores (60 μM). The high sensitivity is not influenced by potential interferents. The test paper treated by 2 could be used to detect DPA. 2 was also used to determine DPA concentrations in tap-water and fetal calf serum (FCS). It shows potential application in the qualitative and quantitative luminescence detection of DPA.