Porphyrin metal complexes with a large dipole moment

Porphyrin metal complexes with a large dipole moment

The new design of an electret material is proposed. The material is based on the intercalation of organometallic macromolecules with a large dipole moment into a polymer during its polymerization under the influence of a constant electric field. A number of porphyrin complexes of transition elements...

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Bibliographic Details
Published in:Journal of organometallic chemistry Vol. 922; p. 121355
Main Authors: Ageeva, Tatyana A., Bush, Aleksander A., Golubev, Denis V., Gorshkova, Anastasiya S., Kamentsev, Konstantin E., Koifman, Oskar I., Rumyantseva, Valentina D., Sigov, Aleksander S., Fomichev, Valeriy V.
Format: Journal Article
Language:English
Published: Elsevier B.V 01-09-2020
Subjects:
Bismuth
Dielectric properties
Electret
IR spectroscopy
Metal complexes
Porphyrin
Quantum chemical calculations
Titanyl
Vanadyl
XPS
Vanadyl
Porphyrin
Dielectric properties
Titanyl
Electret
Bismuth
XPS
Quantum chemical calculations
Metal complexes
IR spectroscopy
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Summary:The new design of an electret material is proposed. The material is based on the intercalation of organometallic macromolecules with a large dipole moment into a polymer during its polymerization under the influence of a constant electric field. A number of porphyrin complexes of transition elements with an “apex” metal–oxygen bond were synthesized, more specifically, complexes with titanyl and vanadyl, as well as complexes with bismuth(III) iodide. They were characterized by a series of physical and chemical methods. The maximum values of the dipole moment were found for BiI-etioporphyrin II (6.47 D) and for BiI-5,10,15,20-tetrakis (pentafluorophenyl)porphyrin (3.87 D). The inclusion of bismuth(III) iodide porphyrin complexes gave polyvinyl acetate films. The dielectric properties of the latter were studied, and a pronounced electret effect was found. [Display omitted] •Bismuth iodide, titanyl and vanadyl complexes of porphyrins was prepared and characterized.•The nature of charge distribution on the atoms of the metalloporphyrins was established by IR spectroscopy and XPS methods.•A theoretical quantum-chemical study we obtained the optimized geometries of free bases and of their bismuth complexes.•The formation of polyvinyl acetate film materials intercalated by porphyrin complexes with bismuth(III) were carried.•The dielectric properties of film materials intercalated by porphyrin complexes with bismuth(III) iodide were studied.
ISSN:0022-328X
1872-8561
DOI:10.1016/j.jorganchem.2020.121355