Cargando…
α-((4-Cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles
The article describes the synthesis and properties of α-((4-cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol), the first poly(ethylene glycol) stabilizer for metal nanoparticles that is based on a cyano rather than a thiol or thiolate anchor group. The silver particles used to evaluate the effectiven...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Beilstein-Institut
2017
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5372763/ https://www.ncbi.nlm.nih.gov/pubmed/28462064 http://dx.doi.org/10.3762/bjnano.8.67 |
_version_ | 1782518686202986496 |
---|---|
author | Lutze, Jana Bañares, Miguel A Pita, Marcos Haase, Andrea Luch, Andreas Taubert, Andreas |
author_facet | Lutze, Jana Bañares, Miguel A Pita, Marcos Haase, Andrea Luch, Andreas Taubert, Andreas |
author_sort | Lutze, Jana |
collection | PubMed |
description | The article describes the synthesis and properties of α-((4-cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol), the first poly(ethylene glycol) stabilizer for metal nanoparticles that is based on a cyano rather than a thiol or thiolate anchor group. The silver particles used to evaluate the effectiveness of the new stabilizer typically have a bimodal size distribution with hydrodynamic diameters of ca. 13 and ca. 79 nm. Polymer stability was evaluated as a function of the pH value both for the free stabilizer and for the polymers bound to the surface of the silver nanoparticles using (1)H NMR spectroscopy and zeta potential measurements. The polymer shows a high stability between pH 3 and 9. At pH 12 and higher the polymer coating is degraded over time suggesting that α-((4-cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol) is a good stabilizer for metal nanoparticles in aqueous media unless very high pH conditions are present in the system. The study thus demonstrates that cyano groups can be viable alternatives to the more conventional thiol/thiolate anchors. |
format | Online Article Text |
id | pubmed-5372763 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Beilstein-Institut |
record_format | MEDLINE/PubMed |
spelling | pubmed-53727632017-05-01 α-((4-Cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles Lutze, Jana Bañares, Miguel A Pita, Marcos Haase, Andrea Luch, Andreas Taubert, Andreas Beilstein J Nanotechnol Full Research Paper The article describes the synthesis and properties of α-((4-cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol), the first poly(ethylene glycol) stabilizer for metal nanoparticles that is based on a cyano rather than a thiol or thiolate anchor group. The silver particles used to evaluate the effectiveness of the new stabilizer typically have a bimodal size distribution with hydrodynamic diameters of ca. 13 and ca. 79 nm. Polymer stability was evaluated as a function of the pH value both for the free stabilizer and for the polymers bound to the surface of the silver nanoparticles using (1)H NMR spectroscopy and zeta potential measurements. The polymer shows a high stability between pH 3 and 9. At pH 12 and higher the polymer coating is degraded over time suggesting that α-((4-cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol) is a good stabilizer for metal nanoparticles in aqueous media unless very high pH conditions are present in the system. The study thus demonstrates that cyano groups can be viable alternatives to the more conventional thiol/thiolate anchors. Beilstein-Institut 2017-03-15 /pmc/articles/PMC5372763/ /pubmed/28462064 http://dx.doi.org/10.3762/bjnano.8.67 Text en Copyright © 2017, Lutze et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms) |
spellingShingle | Full Research Paper Lutze, Jana Bañares, Miguel A Pita, Marcos Haase, Andrea Luch, Andreas Taubert, Andreas α-((4-Cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles |
title | α-((4-Cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles |
title_full | α-((4-Cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles |
title_fullStr | α-((4-Cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles |
title_full_unstemmed | α-((4-Cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles |
title_short | α-((4-Cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles |
title_sort | α-((4-cyanobenzoyl)oxy)-ω-methyl poly(ethylene glycol): a new stabilizer for silver nanoparticles |
topic | Full Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5372763/ https://www.ncbi.nlm.nih.gov/pubmed/28462064 http://dx.doi.org/10.3762/bjnano.8.67 |
work_keys_str_mv | AT lutzejana a4cyanobenzoyloxyōmethylpolyethyleneglycolanewstabilizerforsilvernanoparticles AT banaresmiguela a4cyanobenzoyloxyōmethylpolyethyleneglycolanewstabilizerforsilvernanoparticles AT pitamarcos a4cyanobenzoyloxyōmethylpolyethyleneglycolanewstabilizerforsilvernanoparticles AT haaseandrea a4cyanobenzoyloxyōmethylpolyethyleneglycolanewstabilizerforsilvernanoparticles AT luchandreas a4cyanobenzoyloxyōmethylpolyethyleneglycolanewstabilizerforsilvernanoparticles AT taubertandreas a4cyanobenzoyloxyōmethylpolyethyleneglycolanewstabilizerforsilvernanoparticles |