Highly Porous Fluorescent Materials Based on Polymer Matrices Impregnated with Eu(dbm)3 Molecules in a Supercritical Carbon Dioxide Medium

A. O. Rybaltovskii, A. A. Akovantseva, E. N. Bolbasov, V. M. Buznik, Yu S. Zavorotny, N. V. Minaev, A. G. Mirochnik, A. A. Sergeev, S. I. Tverdokhlebov, V. I. Yusupov

Research output: Contribution to journalArticlepeer-review

Abstract

The possibility of creating luminescent films based on highly porous polymer materials doped with the europium complex Eu(dbm)3 · H2O in a supercritical carbon dioxide medium using ethanol as a co-solvent is demonstrated. The initial polymer samples are polytetrafluoroethylene films obtained using thermal spraying or electrospinning techniques and polybenzimidazole films with foam-like structures obtained using laser irradiation. Deposition of the Eu complex in the pores of such materials (up to a few micrometers in size) leads to the appearance of bright characteristic photoluminescence (PL) in the red region, the intensity of which depends on the impregnation method and subsequent processing of the samples. An analysis of the intensity ratio between the electric dipole and magnetic dipole components of the PL spectra allow us to draw conclusions about the changes in the nearest environment of Eu3+ ions in each of the studied host materials.

Original languageEnglish
Pages (from-to)1081-1089
Number of pages9
JournalRussian Journal of Physical Chemistry B
Volume14
Issue number7
DOIs
Publication statusPublished - Dec 2020

Keywords

  • fibrous materials
  • foam-like structures
  • Keywords: europium ions
  • photoluminescence
  • polymer films
  • polytetrafluoroethylene
  • supercritical carbon dioxide

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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