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Kinetics Of Release of the Bifunctional Probe 2,2,5,5-Tetramethyl-4-Phenyl-3-Imidazoline-1-Oxyl-3-Oxide from Poly-D, L-Lactide Films Formed with the Use of Supercritical Carbon Dioxide

2021, №1

сс. 52-59

Kinetics Of Release of the Bifunctional Probe 2,2,5,5-Tetramethyl-4-Phenyl-3-Imidazoline-1-Oxyl-3-Oxide from Poly-D, L-Lactide Films Formed with the Use of Supercritical Carbon Dioxide

2021, №1

сс. 52-59

T.A. Ivanova, N.A. Chumakova, E.N. Golubeva, M.Ya. Mel’nikov

Key words: supercritical carbon dioxide, electron paramagnetic resonance spectroscopy, optical spectroscopy, PDLLA, spin probe 2,2,5,5-tetramethyl-4-phenyl-3-imidazoline-1-oxyl-3-oxide

The optical spectroscopy and EPR spectroscopy methods were used together for the first
time to quantitatively describe the release of a nitroxyl probe from poly-D,L-lactide (PDLLA)
films into a phosphate buffer solution. The bifunctional probe 2,2,5,5-tetramethyl-4-phenyl-
3-imidazoline-1-oxyl-3-oxide (IMNO) contains a paramagnetic nitroxyl fragment and has
a high extinction coefficient in the UV spectrum. Polymer films were obtained from porous
matrices based on PDLLA, formed and doped with IMNO in a supercritical CO₂ environment.
It has been established that the combined use of spectrophotometry and EPR spectroscopy
is promising for obtaining more detailed information on the processes of the release of
probes from PDLLA films, the duration of which does not exceed three weeks.

Translated article

doi:10.1134/S1990793121080066

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ГОСТ
7.0.100-2018

Иванова, Т.А. Kinetics Of Release of the Bifunctional Probe 2,2,5,5-Tetramethyl-4-Phenyl-3-Imidazoline-1-Oxyl-3-Oxide from Poly-D, L-Lactide Films Formed with the Use of Supercritical Carbon Dioxide / Т.А. Иванова, Н.А. Чумакова, Е.Н. Голубева [и др.]. – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2021. – Т. 16. – № 1. – С. 52-59. - DOI: 10.34984/SCFTP.2021.16.1.003

TRANSLIT

Ivanova, T.A. Kinetika vysvobozhdeniya bifunkcional'nogo zonda 2,2,5,5-tetrametil-4-fenil-3-imidazolin-1-oksil-3-oksida iz plenok poli-D,L-laktida, sformirovannyh s ispol'zovaniem sverhkriticheskogo dioksida ugleroda / T.A. Ivanova, N.A. CHumakova, E.N. Golubeva [i dr.]. – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2021. – Т. 16. – № 1. – S. 52-59. - DOI: 10.34984/SCFTP.2021.16.1.003

T.A. Ivanova, N.A. Chumakova, E.N. Golubeva, M.Ya. Mel’nikov Kinetics Of Release of the Bifunctional Probe 2,2,5,5-Tetramethyl-4-Phenyl-3-Imidazoline-1-Oxyl-3-Oxide from Poly-D, L-Lactide Films Formed with the Use of Supercritical Carbon Dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 52-59 (2021). https://doi.org/10.34984/SCFTP.2021.16.1.003

Kinetics Of Release of the Bifunctional Probe 2,2,5,5-Tetramethyl-4-Phenyl-3-Imidazoline-1-Oxyl-3-Oxide from Poly-D, L-Lactide Films Formed with the Use of Supercritical Carbon Dioxide

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