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Three-dimensional terbium(III) metal–organic framework constructed by thiophene-2,5-dicarboxylate: synthesis, crystal structure and fluorescent properties

Authors
  • Yu, Xiu-Yue1
  • Tian, Dong-Jie2
  • Zheng, Xin1
  • Niu, Cao-Yuan1
  • 1 Henan Agricultural University, Zhengzhou, Henan, 450002, P. R. China , Zhengzhou (China)
  • 2 Henan Normal University, Ministry of Education, Xinxiang, Henan, 453007, P. R. China , Xinxiang (China)
Type
Published Article
Journal
SN Applied Sciences
Publisher
Springer International Publishing
Publication Date
Oct 14, 2020
Volume
2
Issue
11
Identifiers
DOI: 10.1007/s42452-020-03642-w
Source
Springer Nature
Keywords
License
Yellow

Abstract

AbstractA novel Tb(III) metal–organic framework was synthesized by a multi-layer diffusion method at room temperature. Adjacent Tb(III) ions were connected together by bridging carboxylic groups to construct one-dimensional chains and the metal–organic framework based on these parallel 1D chains was formed through thiophene-2,5-dicarboxylate bridges. UV–Vis and fluorescent emission spectra as well as theoretical calculation showed that organic ligands acted as sensitizers to Tb(III) fluorescence. With the excitation of 325 nm, the emission peaks of this compound were found at 488, 545, 587, and 621 nm which were attributed to 5D4 → 7F6, 5D4 → 7F5, 5D4 → 7F4, and 5D4 → 7F3 transitions, respectively. The quantum yield for solid sample was 36.98% and this compound can emit strong green light in the solid state.Graphic abstractOne new Tb(III) metal-organic framework was synthesized by a multi-layer diffusion method at room temperature using thiophene-2,5-dicarboxylate as the bridging ligand and investigated by single-crystal structure, UV-Vis absorption, and fluorescent emission.

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