A Microporous Anionic Metal–Organic Framework for Sensing Luminescence of Lanthanide(III) Ions and Selective Absorption of Dyes by Ionic Exchange. Issue 19 (27th March 2014)

• Record Type: Journal Article
• Authors: Qin, Jun‐Sheng; Zhang, Shu‐Ran; Du, Dong‐Ying; Shen, Ping; Bao, Shao‐Juan; Lan, Ya‐Qian; Su, Zhong‐Min
• Is Part Of: Chemistry. Volume 20:Issue 19(2014)
• Page Start: 5625
• Page End: 5630
• Publication Date: 2014-03-27
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201304480
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Herein, a novel anionic framework with primitive centered cubic (pcu) topology, [(CH<sub>3</sub>)<sub>2</sub>NH<sub>2</sub>]<sub>4</sub>[(Zn<sub>4</sub>dttz<sub>6</sub>)Zn<sub>3</sub>]⋅15 DMF⋅4.5 H<sub>2</sub>O, (<bold>IFMC‐2</bold>; H<sub>3</sub>dttz=4, 5‐di(1<italic>H</italic>‐tetrazol‐5‐yl)‐2<italic>H</italic>‐1, 2, 3‐triazole) was solvothermally isolated. A new example of a tetranuclear zinc cluster {Zn<sub>4</sub>dttz<sub>6</sub>} served as a secondary building unit in <bold>IFMC‐2</bold>. Furthermore, the metal cluster was connected by Zn<sup>II</sup> ions to give rise to a 3D open microporous structure. The lanthanide(III)‐loaded metal–organic framework (MOF) materials <bold>Ln<sup>3+</sup>@IFMC‐2</bold>, were successfully prepared by using ion‐exchange experiments owing to the anionic framework of <bold>IFMC‐2</bold>. Moreover, the emission spectra of the as‐prepared <bold>Ln<sup>3+</sup>@IFMC‐2</bold> were investigated, and the results suggested that <bold>IFMC‐2</bold> could be utilized as a potential luminescent probe toward different Ln<sup>3+</sup> ions. Additionally, the absorption ability of <bold>IFMC‐2</bold> toward ionic dyes was also performed. Cationic dyes can be absorbed, but not neutral and anionic dyes, thus indicating that <bold>IFMC‐2</bold> exhibits selective absorption toward cationic dyes. Furthermore, the cationic dyes can be gradually released in the presence of NaCl.</p> </abstract>