A Highly Chemically Stable Metal-Organic Framework as a Luminescent Probe for the Regenerable Ratiometric Sensing of pH
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- 作者：Dr. Jian Wang ; Yang Li ; Min Jiang ; Yanhong Liu ; Lingwen Zhang and Dr. Pengyan Wu
- 刊名：Chemistry - A European Journal
- 出版年：2016
- 出版时间：September 5, 2016
- 年：2016
- 卷：22
- 期：37
- 页码：13023-13027
- 全文大小：2301K
- ISSN：1521-3765
文摘
A heteroatom-rich 3D noninterpenetrating metal–organic framework (MOF) Cd-EDDA constructed from an ethylene glycol ether bridging tetracarboxylate ligand H4EDDA (5,5′-(ethane-1,2-diylbis(oxy))diisophthalic acid) shows good chemical resistance to both acidic and alkaline solutions with a pH ranging from 2.0 to 12.2. There is a corresponding ratiometric luminescence response to pH from 2.0 to 11.5, and the sensing mechanism is also discussed through ion chromatography and molecular force field-based calculations. Importantly, the probe can easily be regenerated simply by modulating the pH of the solution, thus being the first example of a regenerable MOF-based ratiometric luminescent probe for pH.