Synthesis and properties of paramagnetic derivatives of linear and fused polyaromatic compounds

E. V. Tretyakov, T. V. Novikova, V. V. Korolev, O. M. Usov, S. F. Vasilevsky, Yu N. Molin

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Paramagnetic derivatives of tolan, anthracene, and terphenyl of the A - Sp - R ̇ type, where A is an aromatic group, R ̇ is a stable radical center, and Sp is a spacer, were synthesized. The electronic absorption and luminescence spectra of these compounds were examined. The introduction of the paramagnetic dihydroimidazole fragment causes a decrease (10 - 500-fold) in the quantum yield of luminescence compared to emission of the individual aromatic luminophore. The presence of a radical center (R ̇ ) in the (alkane) ̇+ / A - Sp - R ̇ radical-ionic pair leads to the disappearance or fast (nanoseconds) damping of the magnetic effect of luminescence arising upon recombination of these pairs.

Original languageEnglish
Pages (from-to)1409-1414
Number of pages6
JournalRussian Chemical Bulletin
Volume49
Issue number8
DOIs
Publication statusPublished - 1 Jan 2000
Externally publishedYes

    Fingerprint

Keywords

  • Alkynes
  • Anthracene
  • Luminescence
  • Magnetic effects
  • Nitroxyl radicals
  • Radical ions
  • Terphenyl
  • Tolan

ASJC Scopus subject areas

  • Chemistry(all)

Cite this