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- Title
A Microporous Anionic Metal-Organic Framework for Sensing Luminescence of Lanthanide(III) Ions and Selective Absorption of Dyes by Ionic Exchange.
- Authors
Qin, Jun ‐ Sheng; Zhang, Shu ‐ Ran; Du, Dong ‐ Ying; Shen, Ping; Bao, Shao ‐ Juan; Lan, Ya ‐ Qian; Su, Zhong ‐ Min
- Abstract
Herein, a novel anionic framework with primitive centered cubic (pcu) topology, [(CH3)2NH2]4[(Zn4dttz6)Zn3]⋅15 DMF⋅4.5 H2O, ( IFMC-2; H3dttz=4,5-di(1 H-tetrazol-5-yl)-2 H-1,2,3-triazole) was solvothermally isolated. A new example of a tetranuclear zinc cluster {Zn4dttz6} served as a secondary building unit in IFMC-2. Furthermore, the metal cluster was connected by ZnII ions to give rise to a 3D open microporous structure. The lanthanide(III)-loaded metal-organic framework (MOF) materials Ln3+@IFMC-2, were successfully prepared by using ion-exchange experiments owing to the anionic framework of IFMC-2. Moreover, the emission spectra of the as-prepared Ln3+@IFMC-2 were investigated, and the results suggested that IFMC-2 could be utilized as a potential luminescent probe toward different Ln3+ ions. Additionally, the absorption ability of IFMC-2 toward ionic dyes was also performed. Cationic dyes can be absorbed, but not neutral and anionic dyes, thus indicating that IFMC-2 exhibits selective absorption toward cationic dyes. Furthermore, the cationic dyes can be gradually released in the presence of NaCl.
- Subjects
METAL-organic frameworks; STRUCTURAL frames; BASIC dyes; ELECTROLYSIS; TETRAZOLES; RARE earth metals
- Publication
Chemistry - A European Journal, 2014, Vol 20, Issue 19, p5625
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201304480