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
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...
Autores principales: | , , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6960741/ https://www.ncbi.nlm.nih.gov/pubmed/31817077 http://dx.doi.org/10.3390/polym11122006 |
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author | Lezov, Alexey Gubarev, Alexander Mikhailova, Maria Lezova, Alexandra Mikusheva, Nina Kalganov, Vladimir Dudkina, Marina Ten’kovtsev, Andrey Nekrasova, Tatyana Andreeva, Larisa Saprykina, Natalia Smyslov, Ruslan Gorshkova, Yulia Romanov, Dmitriy Höppener, Stephanie Perevyazko, Igor Tsvetkov, Nikolay |
author_facet | Lezov, Alexey Gubarev, Alexander Mikhailova, Maria Lezova, Alexandra Mikusheva, Nina Kalganov, Vladimir Dudkina, Marina Ten’kovtsev, Andrey Nekrasova, Tatyana Andreeva, Larisa Saprykina, Natalia Smyslov, Ruslan Gorshkova, Yulia Romanov, Dmitriy Höppener, Stephanie Perevyazko, Igor Tsvetkov, Nikolay |
author_sort | Lezov, Alexey |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-6960741 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-69607412020-01-23 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 Lezov, Alexey Gubarev, Alexander Mikhailova, Maria Lezova, Alexandra Mikusheva, Nina Kalganov, Vladimir Dudkina, Marina Ten’kovtsev, Andrey Nekrasova, Tatyana Andreeva, Larisa Saprykina, Natalia Smyslov, Ruslan Gorshkova, Yulia Romanov, Dmitriy Höppener, Stephanie Perevyazko, Igor Tsvetkov, Nikolay Polymers (Basel) Article 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. MDPI 2019-12-04 /pmc/articles/PMC6960741/ /pubmed/31817077 http://dx.doi.org/10.3390/polym11122006 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Lezov, Alexey Gubarev, Alexander Mikhailova, Maria Lezova, Alexandra Mikusheva, Nina Kalganov, Vladimir Dudkina, Marina Ten’kovtsev, Andrey Nekrasova, Tatyana Andreeva, Larisa Saprykina, Natalia Smyslov, Ruslan Gorshkova, Yulia Romanov, Dmitriy Höppener, Stephanie Perevyazko, Igor Tsvetkov, Nikolay 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 |
title | 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 |
title_full | 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 |
title_fullStr | 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 |
title_full_unstemmed | 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 |
title_short | 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 |
title_sort | 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 |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6960741/ https://www.ncbi.nlm.nih.gov/pubmed/31817077 http://dx.doi.org/10.3390/polym11122006 |
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