Journal
CHEMPLUSCHEM
Volume 84, Issue 3, Pages 307-313Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.201900109
Keywords
luminescence; metal-organic frameworks; methanol; sensors; zinc
Categories
Funding
- Deutscher Akademischer Austauschdienst (DAAD)
- Studienstiftung des deutschen Volkes
- Erasmus-Mundus master programme ASC
- Erasmus+ Program
- Research Academy Leipzig
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A luminescent zinc-based metal-organic framework (MOF; 1) was synthesized from a highly conjugated tridentate ligand, 1,3,5-tris[(1E)-2 '-(4 ''-benzoic acid)vinyl]benzene. X-ray single crystal analysis reveals the organization of 1 in a three-dimensional porous framework. Thermogravimetric analysis shows that 1 has a good thermal stability, and resists decomposition up to 420 degrees C. The removal of the solvent molecules from the cavities leads to a temporary loss of crystallinity, which can be regained by heating the MOF in diethylformamide, the solvent used for the synthesis, as shown by powder X-ray diffraction. In addition, 1 shows luminescent features influenced by the chemical environment, making it suitable as optical sensor. Detection of methanol with a turn-on effect was possible in low concentration in mixtures with water (50 mu L/3 mL and 10 mu L/3 mL) and as vapor.
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