Fluorescent sensitive detection of luteolin in Chrysanthemum tea using boric acid functionalized binuclear Zn-Eu-MOFs

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2025-03-03 DOI:10.1016/j.dyepig.2025.112737

Di Wu, Chengpei Du, Lingyan Ma, Rui Xiao, Long Tan, Wenjing Qi

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Abstract

Owing to Zn²⁺-sensitized fluorescent effect, boric acid functionalized zinc-europium binuclear metal-organic frameworks (Zn-Eu-MOFs) are synthesized and applied in fluorescent quenching detection of luteolin in Chrysanthemum tea for the first time. Eu³⁺/Zn²⁺ and 5-boronobenzene-1,3-dicarboxylic acid (BBDC) are utilized via a fast one-pot microwave process at 120 °C for 1 h. Due to energy transfer efficiency change by “antenna” effect and better effective energy transfer of Zn²⁺ than Eu³⁺, Zn²⁺ increases fluorescence of Zn-Eu-MOFs nearly 3.5 times. Different ligands and different metal ions are compared to synthesize Zn-Eu-MOFs. Highly specific binding affinity of boric acid towards cis-diol structure in luteolin and chelating of Zn²⁺ with luteolin achieves fluorescent quenching detection of luteolin with low limit of detection of 16 nΜ and high selectivity. When it is utilized in fluorescent detection of luteolin in water and Chrysanthemum tea, mean recoveries are obtained from 99.5 % to 102.7 % and from 99.3 % to 100.6 %, respectively.

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硼酸功能化双核zn - eu - mof荧光敏感检测菊花茶中的木犀草素

利用Zn2+致敏荧光效应，合成了硼酸功能化锌铕双核金属有机骨架（Zn-Eu-MOFs），并首次应用于菊花茶中木草素的荧光猝灭检测。利用Eu3+/Zn2+和5-硼苯-1,3-二羧酸（BBDC）在120℃下快速一锅微波处理1 h，由于“天线”效应改变了能量传递效率，Zn2+比Eu3+更有效地传递能量，Zn2+使zn - eu - mof的荧光增强了近3.5倍。比较了不同配体和不同金属离子合成zn - eu - mof的效果。硼酸对木犀草素中顺式二醇结构的高度特异性结合亲和力以及Zn2+与木犀草素的螯合作用，实现了对木犀草素的荧光猝灭检测，检测限低至16 nΜ，选择性高。将该方法用于水和菊花茶中木犀草素的荧光检测，平均回收率分别为99.5% ~ 102.7%和99.3% ~ 100.6%。

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.