Features of the Preparation and Luminescence of Langmuir-Blodgett Films Based on the Tb(III) Complex with 3-Methyl-1-phenyl-4-stearoylpyrazol-5-one and 2,2'-Bipyridine

Julia Devterova; Kirill Kirillov; Anton Nikolaev; Michail Sokolov; Victor Shul'gin; Alexey Gusev; Victor Panyushkin; Wolfgang Linert

doi:10.3390/ma15031127

Features of the Preparation and Luminescence of Langmuir-Blodgett Films Based on the Tb(III) Complex with 3-Methyl-1-phenyl-4-stearoylpyrazol-5-one and 2,2'-Bipyridine

Materials (Basel). 2022 Jan 31;15(3):1127. doi: 10.3390/ma15031127.

Authors

Julia Devterova¹, Kirill Kirillov², Anton Nikolaev¹, Michail Sokolov², Victor Shul'gin³, Alexey Gusev³, Victor Panyushkin¹, Wolfgang Linert⁴

Affiliations

¹ Department of Chemistry and High Technology, Kuban State University, 350040 Krasnodar, Russia.
² Department of Physics and Technics, Kuban State University, 350040 Krasnodar, Russia.
³ Institute of Biochemical Technology, Ecology and Pharmacy, V.I. Vernadsky Crimean Federal University, 295007 Simferopol, Russia.
⁴ Institute of Applied Synthetic Chemistry, Vienna University of Technology, A-1060 Vienna, Austria.

Abstract

In this study, we investigated the effect of terbium ions (Tb³⁺⁾ on the subphases of the limiting area of the molecule for the complex compound (CC) TbL₃∙bipy (where HL is 3-methyl-1-phenyl-4-stearoylpyrazol-5-one and bipy is 2,2'-bipyridine). We examined the Langmuir monolayer and the change in the luminescence properties of TbL₃∙bipy-based Langmuir-Blodgett films (LBFs). The analysis of the compression isotherms, infrared, and luminescence spectra of TbL₃∙bipy LBFs was performed by varying the concentration of Tb³⁺ in the subphases. Our results demonstrate the partial dissociation of the CC at concentrations of C(Tb³⁺) < 5 × 10^-4 M.

Keywords: 4-stearoylpyrazol-5-one; IR microscopy; Langmuir film; Langmuir-Blodgett film; complex compound; luminescence; terbium.

Grants and funding

FZEN-2020-0022/The Ministry of Education and Science of the Russian Federation