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A Highly Chemically Stable Metal–Organic Framework as a Luminescent Probe for the Regenerable Ratiometric Sensing of pH
Author(s) -
Wang Jian,
Li Yang,
Jiang Min,
Liu Yanhong,
Zhang Lingwen,
Wu Pengyan
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201602974
Subject(s) - luminescence , chemistry , heteroatom , ethylene glycol , metal , ether , ligand (biochemistry) , inorganic chemistry , metal organic framework , photochemistry , combinatorial chemistry , organic chemistry , materials science , receptor , adsorption , ring (chemistry) , biochemistry , optoelectronics
A heteroatom‐rich 3D noninterpenetrating metal–organic framework (MOF) Cd‐EDDA constructed from an ethylene glycol ether bridging tetracarboxylate ligand H 4 EDDA (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.