Abstract
Sesamol, is well-known antioxidant and can reduce the rate of oxidation and prolong expiration date. It is also potentially antimutagenic and antihepatotoxic, the detection of sesamol is important and remains a huge challenge. Herein, a new 3D alkaline earth Sr metal organic framework [Sr(BDC)·DMAC·H2O]n (BDC = benzene-1,4-dicarboxylate; DMAC = N,N-dimethylacetamide) is synthesized and a probe based on Tb3+ functionalized Sr-MOF. The Tb(3+)@Sr-MOF showed good luminescence and thermal property. Due to the energy competition between sesamol and ligand, the luminescence intensity of sesamol increases meantime luminescence intensity of Tb3+ decreases, the ratio of the emission intensities (I344/I545) linearly increases with sesamol in concentrations ranging from 1 × 10−7 to 8 × 10−4 M. Furthermore, the fluorescence-detected circular test shows that the composite Tb(3+)@Sr-MOF can serve as ratiometric sensor for sensing of sesamol. This is the first example for self-calibrated detecting sesamol based on metal-organic framework (MOF).
Highlights
Sesame oil is a high-priced, high-quality health food that is popular in China and India because it contains a number of bioactive phytochemical; it is very high in natural antioxidants in the form of lignans
Sesamol (3,4-methylenedioxyphenol) is a natural phenolic lignan found in sesame seed or sesame oil as well as has shown promising antioxidant and neuroprotective effects [1,2]
Some detection methods for sesamol have been developed [3,4] such as high-performance liquid chromatography (HPLC) or ultraviolet (UV) detection ultraviolet (UV) detection
Summary
Sesame oil is a high-priced, high-quality health food that is popular in China and India because it contains a number of bioactive phytochemical; it is very high in natural antioxidants in the form of lignans. Sesamol (3,4-methylenedioxyphenol) is a natural phenolic lignan found in sesame seed or sesame oil as well as has shown promising antioxidant and neuroprotective effects [1,2]. Metal-organic frameworks (MOFs), are crystalline porous architectures that are composed of metal ions or clusters and organic ligand, have been emerging as very promising materials which can be applied in various fields due to their unique properties, such as high surface areas, controllable pore size. There is no report for self-calibrating MOF-based luminescent probe that can selectively detect antioxidant sesamol molecule. A linear relationship between the ratio of luminescent intensities (I343/I545) and the concentration of sesamol This composite Tb(3+)@Sr-MOF can be served as a promising self-calibrating sensor for sesamol sensing
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