Abstract
Trace detection of bioactive small molecules (BSMs) in body fluids is of great importance for disease diagnosis, drug discovery, and health monitoring. Based on the chiral ligand of 4,4'-(1,2-dihydroxyethane-1,2-diyl)dibenzoic acid (H2L), an achiral 3D porous Ni(II)-MOF, with a trinuclear cluster based (3,9)-c {42·6}3{46·621·89}-xmz net, was constructed under solvothermal conditions. Benefiting from its robust framework and excellent luminescent performance, NiMOF was endowed with remarkable capabilities in efficiently, rapidly, and sensitively detecting the 3-nitrotyrosine (3-NT) biomarker and 6-propyl-2-thiouracil (6-PTU) thyroid drug based on the spectral overlap and photo-induced electron transfer (PET) caused luminescence quenching response. Notably, NiMOF exhibited exceptional performance in quantifying 3-NT and 6-PTU in urine samples, yielding highly satisfactory results. Additionally, an intelligent detection system was crafted to enhance the reliability and practicability of 3-NT/6-PTU detection in urine, based on tandem combinational logic gates. This work not only heralds a promising trajectory in the development of MOF-based luminescent sensors, but also paves the way for the intelligent monitoring of BSMs in real bodily fluids.
Published Version
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