荧光
检出限
掺杂剂
离子
解吸
兴奋剂
肉眼
吸附
材料科学
选择性
基质(化学分析)
光化学
化学
分析化学(期刊)
无机化学
物理化学
光电子学
有机化学
色谱法
催化作用
光学
物理
作者
Xi Qiao,Yi Han,Dan Tian,Zhuo-ya Yang,Jinlong Li,Shikai Zhao
标识
DOI:10.1016/j.snb.2019.01.111
摘要
2,4,6-trinitrophenol (PA) is a well-known aromatic compound, due to their higher explosive energy than TNT and their wide utilization when producing organic dyes, medicines and antiseptics. The following paper constructed a composite optical sensing system (denoted as Tb:[email protected]) for PA detection using [Zn8(ad)4(BPDC)6O·2 Me2NH2]·G, ad = adenine, BPDC = 4,4′-biphenyl dicarboxylic acid, G = DMF and water, as supporting matrix and two rare earth ions, Tb(III) and Eu(III), as dopant. Tb:[email protected] was carefully characterized by means of micromorphology, XRD, N2 adsorption and desorption. Detailed analysis on its photophysical performance indicated weak Tb emission and strong Eu emission, owing to the energy competing between two kinds of rare earth ions in Tb:[email protected] After meeting PA, such energy competing was blocked, leading to enhanced Tb emission and decreased Eu emission. Ratiometric fluorescent sensing for PA detection was thus constructed with good selectivity and low LOD (limit of detection) of 0.87 μM. Linear sensing response was achieved. Its practical sensing application and naked eye detection for PA were tentatively discussed as well.
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