Magnetization effects in metalless oligo- and polyphthalocyanides recorded by UHF absorption in a magnetic field

L. A. Blyumenfel'd, Yu A. Koksharov, V. V. Promyslova, A. N. Tikhonov, A. I. Sherle, V. R. Epshtein

Research output: Contribution to journalArticle

Abstract

The magnetic properties of polymers with azoporphyrin macrocycles in the conjugate chain were investigated. The compounds were synthesized by polycyclotetramerization of tetranitrilopyrromellitic acid in a benzene solution or a monomer melt. The EPR spectra were recorded at magnetic field strengths from 0 to 6000 Oe. For a number of samples, in addition to the usual free-radical signals, a phenomenon of magnetic hysteresis for the UHF absorption at low fields (0-1000 Oe) was observed. It was concluded that the hysteresis-type UHF absorption and magnetic memory effects are probably explained by collective magnetic interactions in the oligo-and polyphthalocyanides.

Original languageEnglish
Pages (from-to)849-853
Number of pages5
JournalRussian Journal of Physical Chemistry A
Volume70
Issue number5
Publication statusPublished - May 1996
Externally publishedYes

Fingerprint

Magnetic hysteresis
Benzene
Free Radicals
Paramagnetic resonance
Hysteresis
Magnetization
Magnetic properties
Polymers
Monomers
hysteresis
Magnetic fields
Data storage equipment
magnetic storage
magnetization
Acids
magnetic fields
free radicals
field strength
monomers
benzene

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Blyumenfel'd, L. A., Koksharov, Y. A., Promyslova, V. V., Tikhonov, A. N., Sherle, A. I., & Epshtein, V. R. (1996). Magnetization effects in metalless oligo- and polyphthalocyanides recorded by UHF absorption in a magnetic field. Russian Journal of Physical Chemistry A, 70(5), 849-853.

Magnetization effects in metalless oligo- and polyphthalocyanides recorded by UHF absorption in a magnetic field. / Blyumenfel'd, L. A.; Koksharov, Yu A.; Promyslova, V. V.; Tikhonov, A. N.; Sherle, A. I.; Epshtein, V. R.

In: Russian Journal of Physical Chemistry A, Vol. 70, No. 5, 05.1996, p. 849-853.

Research output: Contribution to journalArticle

Blyumenfel'd, LA, Koksharov, YA, Promyslova, VV, Tikhonov, AN, Sherle, AI & Epshtein, VR 1996, 'Magnetization effects in metalless oligo- and polyphthalocyanides recorded by UHF absorption in a magnetic field', Russian Journal of Physical Chemistry A, vol. 70, no. 5, pp. 849-853.
Blyumenfel'd, L. A. ; Koksharov, Yu A. ; Promyslova, V. V. ; Tikhonov, A. N. ; Sherle, A. I. ; Epshtein, V. R. / Magnetization effects in metalless oligo- and polyphthalocyanides recorded by UHF absorption in a magnetic field. In: Russian Journal of Physical Chemistry A. 1996 ; Vol. 70, No. 5. pp. 849-853.
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AU - Tikhonov, A. N.

AU - Sherle, A. I.

AU - Epshtein, V. R.

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