Star-Shaped poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) with central thiacalix[4]Arene fragments: Reduction and stabilization of silver nanoparticles

Alexey Lezov, Alexander Gubarev, Maria Mikhailova, Alexandra Lezova, Nina Mikusheva, Vladimir Kalganov, Marina Dudkina, Andrey Ten'kovtsev, Tatyana Nekrasova, Larisa Andreeva, Natalia Saprykina, Ruslan Smyslov, Yulia Gorshkova, Dmitriy Romanov, Stephanie Höppener, Igor Perevyazko, Nikolay Tsvetkov

Research output

Abstract

The interaction of silver nitrate with star-shaped poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) containing central thiacalix[4]arene cores, which proceeds under visible light in aqueous solutions at ambient temperature, was studied. It was found that this process led to the formation of stable colloidal solutions of silver nanoparticles. The kinetics of the formation of the nanoparticles was investigated by the observation of a time-dependent increase in the intensity of the plasmon resonance peak that is related to the nanoparticles and appears in the range of 400 to 700 nm. According to the data of electron and X-ray spectroscopy, scanning and transmission electron microscopy, X-ray diffraction analysis, and dynamic light scattering, the radius of the obtained silver nanoparticles is equal to 30 nm. In addition, the flow birefringence experiments showed that solutions of nanoparticles have high optical shear coefficients.

Original languageEnglish
Article number2006
JournalPolymers
Volume11
Issue number12
DOIs
Publication statusPublished - 1 Dec 2019

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Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

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