Dalton transactions (Cambridge, England : 2003) · 2021
Three novel metal-organic frameworks with different coordination modes for trace detection of anthrax biomarkers.
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Cong Zhenzhong, Zhu Mingchang, Zhang Ying, Yao Wei, Kosinova Marina, Fedin Vladimir P, Wu Shuangyan, Gao Enjun
Аннотация
Dipicolinic acid (DPA) is an anthrax biomarker. Its serious consequences make its detection a great need. In this paper, three novel metal-organic frameworks (MOFs) with different coordination modes were synthesized by a simple solvothermal method, which can be used as highly efficient fluorescence sensors for the highly selective and sensitive trace detection of DPA. MOFs 1-3 showed rapid responses to DPA (<30 s), and the limits of detection (LODs) were calculated to be 1.01 × 10-6 M-1 (MOF 1), 1.17 × 10-6 M-1 (MOF 2) and 2.07 × 10-6 M-1 (MOF 3). DPA detection based on MOFs 1-3 in fetal bovine serum is highly reliable based on the high recovery rates (90% to 115%). Hence, the three MOF-based sensors can be used in the real-time detection of DPA.