Mechanism of the Thermolysis of Magnesium Perylenetetracarboxylates

Black-red and orange magnesium perylene-3,4,9,10-tetracarboxylate species are synthesized in the ion-exchange reaction at room temperature and by boiling an aqueous solution, respectively. Upon heating the two species to 500°C in argon, they reversibly lose 19–27 wt % of their crystallization water,...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2023-06, Vol.97 (6), p.1202-1211
Main Authors: Naifert, S. A., Zherebtsov, D. A., Uchaev, D. A., Morozov, R. S., Smolyakova, K. R., Orlova, E. M., Pan’kova, A. A., Sharova, A. L.
Format: Article
Language:English
Subjects:
Aqueous solutions
Argon
Chemical synthesis
Chemistry
Chemistry and Materials Science
Crystallization
Glassy carbon
Heating
Ion exchange
Magnesium
Metal-organic frameworks
Nanomaterials
Nanoparticles
Physical Chemistry
Physical Chemistry of Nanoclusters
Porous media
Room temperature
Supramolecular Structures
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Summary:Black-red and orange magnesium perylene-3,4,9,10-tetracarboxylate species are synthesized in the ion-exchange reaction at room temperature and by boiling an aqueous solution, respectively. Upon heating the two species to 500°C in argon, they reversibly lose 19–27 wt % of their crystallization water, and the products become black. X-ray diffraction analysis results show the preservation of the layered structure upon heating, which is confirmed via transmission electron microscopy. Exposure to a humid atmosphere rehydrates and restores the original structure. Thermolysis to 1000°С in argon produces a composite of MgO nanoparticles in a porous glassy carbon matrix. The stability of perylenetetracarboxylates up to 500°C makes them a promising candidate for synthesizing metal–organic frameworks.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024423060201