文献类型：期刊文献

英文题名：Dual-functional lanthanide-MOF probe nanocomposite based on hydroxyapatite nanowires as fluorescent sensor for ascorbic acid

作者：Sun, Mengyao[1];Zhong, Zhihua[1];Wang, Yajie[2];Yu, Bohao[1];Zhang, Lei[1];Zhang, Weibing[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China;[2]Anhui Med Coll, Dept Pharm, Hefei 230601, Peoples R China

年份：2023

卷号：190

期号：3

外文期刊名：MICROCHIMICA ACTA

收录：;EI(收录号：20242616348644);WOS:【SCI-EXPANDED(收录号:WOS:000933280000001)】；

语种：英文

外文关键词：Lanthanide metal organic framework; Internal reference fluorescence probe; Hydroxyapatite nanowires; Ascorbic acid; Fruit juice analysis

摘要：A dual-functional lanthanide-MOF nanocomposite probe was designed and constructed for the detection of ascorbic acid (AA). The magnetically functionalized hydroxyapatite nanowires are selected as the carriers and simultaneously loaded with ciprofloxacin (CIP) and terbium metal organic framework to form the internal reference fluorescence probe nanocomposite (Fe3O4-HAPNWs-Tb/MOF-CIP). This dual-functional lanthanide-MOF probe not only combines the respectively unique fluorescence properties of lanthanide MOFs and CIP, but also takes full advantage of the rapid separation properties of the magnetic component. Structural and spectroscopic characterization results have demonstrated the successful synthesis of probe material and the fluorescence mechanism. At a suitable excitation wavelength (295 nm), the probe can simultaneously emit characteristic fluorescence of CIP (445 nm) and Tb3+ (543 nm). In the presence of AA, the ratio of I-543/I-445 decreases rapidly with increasing of AA concentration. The linear range of determination is 0.3-40 mu M with a detection limit of 20.4 nM. The contents of AA in vitamin C tablets and four fruit juice samples were detected by the composite probe. The spiked recoveries ranged from 82.6 to 104.2% with relative standard deviations (RSD) less than 2.1%, revealing the practical application value of the developed sensor in healthcare and food fields.