Ratiometric fluorescence sensing of formaldehyde in food samples based on bifunctional MOF

NWIPB OpenIR

	Ratiometric fluorescence sensing of formaldehyde in food samples based on bifunctional MOF
	Zuo, Ya-Nan; Zhao, Xian-En; Xia, Yinghui; Liu, Zhi-Ang; Sun, Jing; Zhu, Shuyun; Liu, Huwei
	2023
发表期刊	MICROCHIMICA ACTA
卷号	190 期号:1
摘要	A new fluorescence strategy was described for ratiometric sensing of formaldehyde (FA) with bifunctional MOF, which acted as a fluorescence reporter as well as biomimetic peroxidase. With the assistance of H2O2, NH2-MIL-101 (Fe) catalyzes the oxidation of non-luminescent substrate o-phenylenediamine (OPD) to produce fluorescent product (oxOPD) with the maximum emission at 570 nm. Besides, intrinsic fluorescence of MOF (lambda em = 445 nm) was quenched by oxOPD through inner filter effect (IFE). However, FA and OPD reacted to generate Schiff bases, which competitively consumed OPD inhibiting the generation of oxOPD. Under the excitation wavelength of 375 nm, a ratiometric strategy was designed to detect FA with the fluorescence intensity ratio at 445 nm and 570 nm (F-445/F-570) as readout signal. This strategy exhibited a wide linear range (0.1-50 mu M) and low detection limit of 0.03 mu M. This method was confirmed for FA detection in food samples. In addition to establishing a new method to detect FA, this work will open new applications of MOF in food safety.
收录类别	SCIE
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/61723
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Zuo, Ya-Nan,Zhao, Xian-En,Xia, Yinghui,et al. Ratiometric fluorescence sensing of formaldehyde in food samples based on bifunctional MOF[J]. MICROCHIMICA ACTA,2023,190(1).
APA	Zuo, Ya-Nan.,Zhao, Xian-En.,Xia, Yinghui.,Liu, Zhi-Ang.,Sun, Jing.,...&Liu, Huwei.(2023).Ratiometric fluorescence sensing of formaldehyde in food samples based on bifunctional MOF.MICROCHIMICA ACTA,190(1).
MLA	Zuo, Ya-Nan,et al."Ratiometric fluorescence sensing of formaldehyde in food samples based on bifunctional MOF".MICROCHIMICA ACTA 190.1(2023).