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Diffusion of Gold Nanorods Functionalized with Thermoresponsive Polymer Brushes
[Image: see text] Understanding the diffusion of gold nanorods (AuNRs) and their composites in dispersion is important at fundamental level and in fields as diverse as material science, nanobiotechnology to drug delivery. The translational and rotational diffusion of AuNRs decorated with thermorespo...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American
Chemical Society
2018
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7434011/ https://www.ncbi.nlm.nih.gov/pubmed/29897767 http://dx.doi.org/10.1021/acs.langmuir.8b01289 |
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author | Schweizerhof, Sjören Demco, Dan Eugen Mourran, Ahmed Fechete, Radu Möller, Martin |
author_facet | Schweizerhof, Sjören Demco, Dan Eugen Mourran, Ahmed Fechete, Radu Möller, Martin |
author_sort | Schweizerhof, Sjören |
collection | PubMed |
description | [Image: see text] Understanding the diffusion of gold nanorods (AuNRs) and their composites in dispersion is important at fundamental level and in fields as diverse as material science, nanobiotechnology to drug delivery. The translational and rotational diffusion of AuNRs decorated with thermoresponsive poly(N-isopropylacrylamide) brushes having hydrophilic and hydrophobic end groups was investigated in the dilute regime by dynamic light scattering. The same series of functionalized AuNRs were studied in the isotropic concentrated dispersions by high-resolution NMR diffusometry. The dependence of translational and rotational diffusivity upon molecular weight and polymer end group were measured as a function of temperature in the region of the brush phase transition. The effective hydrodynamic radius of AuNR composites proved to be the most sensitive quantity to the temperature-induced phase transition of brushes, allowing the evaluation of the brush thickness in the swollen and collapsed states. |
format | Online Article Text |
id | pubmed-7434011 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American
Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-74340112020-08-19 Diffusion of Gold Nanorods Functionalized with Thermoresponsive Polymer Brushes Schweizerhof, Sjören Demco, Dan Eugen Mourran, Ahmed Fechete, Radu Möller, Martin Langmuir [Image: see text] Understanding the diffusion of gold nanorods (AuNRs) and their composites in dispersion is important at fundamental level and in fields as diverse as material science, nanobiotechnology to drug delivery. The translational and rotational diffusion of AuNRs decorated with thermoresponsive poly(N-isopropylacrylamide) brushes having hydrophilic and hydrophobic end groups was investigated in the dilute regime by dynamic light scattering. The same series of functionalized AuNRs were studied in the isotropic concentrated dispersions by high-resolution NMR diffusometry. The dependence of translational and rotational diffusivity upon molecular weight and polymer end group were measured as a function of temperature in the region of the brush phase transition. The effective hydrodynamic radius of AuNR composites proved to be the most sensitive quantity to the temperature-induced phase transition of brushes, allowing the evaluation of the brush thickness in the swollen and collapsed states. American Chemical Society 2018-06-13 2018-07-10 /pmc/articles/PMC7434011/ /pubmed/29897767 http://dx.doi.org/10.1021/acs.langmuir.8b01289 Text en Copyright © 2018 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Schweizerhof, Sjören Demco, Dan Eugen Mourran, Ahmed Fechete, Radu Möller, Martin Diffusion of Gold Nanorods Functionalized with Thermoresponsive Polymer Brushes |
title | Diffusion of Gold Nanorods Functionalized with Thermoresponsive
Polymer Brushes |
title_full | Diffusion of Gold Nanorods Functionalized with Thermoresponsive
Polymer Brushes |
title_fullStr | Diffusion of Gold Nanorods Functionalized with Thermoresponsive
Polymer Brushes |
title_full_unstemmed | Diffusion of Gold Nanorods Functionalized with Thermoresponsive
Polymer Brushes |
title_short | Diffusion of Gold Nanorods Functionalized with Thermoresponsive
Polymer Brushes |
title_sort | diffusion of gold nanorods functionalized with thermoresponsive
polymer brushes |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7434011/ https://www.ncbi.nlm.nih.gov/pubmed/29897767 http://dx.doi.org/10.1021/acs.langmuir.8b01289 |
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