期刊
NEW JOURNAL OF CHEMISTRY
卷 43, 期 5, 页码 2353-2361出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nj05647a
关键词
-
资金
- NSFC [21761022, 21301087]
- Inner Mongolia autonomous region natural science fund project [2017MS0204]
A 2D zinc(ii) metal-organic framework (Zn-MOF-1) formulated as [Zn-2(L)(2)(TPA)]2H(2)O, (L = 4-(tetrazol-5-yl)phenyl-4,2:6,4-terpyridine, TPA = terephthalic acid) was successfully obtained under solvothermal conditions. Zn-MOF-1 shows a new 2D double-layered honeycomb structure containing Zn2+ ions, ligand L and TPA, with uncoordinated nitrogen atoms (from pyridine rings and tetrazol rings) of L and uncoordinated carboxylate oxygen atoms of TPA, which easily form hydrogen bonds with analytes. Fluorescence analysis reveals that Zn-MOF-1 generates strong blue luminescence, which can be assigned to ligand-centered emission. More importantly, it is the first reported recyclable multi-responsive Zn-MOF fluorescence sensor for pesticide 2,6-dichloro-4-nitroaniline, Fe(iii) and Cr(vi) (CrO42-/Cr2O72- ions) detection with high sensitivity, selectivity and low detection limit in methanol or water via fluorescence quenching. Furthermore, selective sensing by Zn-MOF-1 of 2,6-dichloro-4-nitroaniline, Fe3+ ions, and CrO42- or Cr2O72- ions can mainly be attributed to the absorption by the analytes of the excitation and/or emission light of Zn-MOF-1 and the electronic interactions between Zn-MOF-1 and the analytes.
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