期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 286, 期 -, 页码 1-8出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2019.01.111
关键词
Explosion; Ratiometric sensing; Rare earth doping; Optical sensing
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:Eu@MOF) for PA detection using [Zn-8(ad)(4)(BPDC)(6)O center dot 2Me(2)NH(2)]center dot 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:Eu@MOF was carefully characterized by means of micromorphology, XRD, N-2 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: Eu@MOF. 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 mu M. Linear sensing response was achieved. Its practical sensing application and naked eye detection for PA were tentatively discussed as well.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据