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  • Title: Highly catalysis MOFCe supported Ag nanoclusters coupled with specific aptamer for SERS quantitative assay of trace dopamine.
    Author: Shi J, Li J, Liang A, Jiang Z.
    Journal: Talanta; 2022 Aug 01; 245():123468. PubMed ID: 35405447.
    Abstract:
    A cerium metal organic framework-loaded silver nanocluster (MOFCeAgNC) is synthesized by a facile stirring procedure with trimesic acid, cerium nitrate, silver nitrate and NaBH4, which exhibites strong catalytic activity in the indicated reaction of HAuCl4-sodium lactate (SL). MOFCeAgNC can sensitively detect dopamine (DA) by surface-enhanced Raman scattering (SERS) and resonance Rayleigh scattering (RRS) techniques with a detection concentration range of 0.01-0.25 nmol/L and a detection limit of 0.008 nmol/L. Based on the specific binding of aptamer (Apt)-DA and the catalytic amplification strategy of MOFCeAgNC on HAuCl4-SL, a sensitive and convenient DA platform for dual-mode detection of SERS and RRS is constructed. In addition, the platform is successfully applied to detect DA in human serum with satisfactory recoveries (95.7-102%).
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