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Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods
Although challenging, assembling and orienting non-spherical nanomaterials into two- and three-dimensional (2D and 3D) ordered arrays can facilitate versatile collective properties by virtue of their shape-dependent properties that cannot be realized with their spherical counterparts. Here, we repor...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6937238/ https://www.ncbi.nlm.nih.gov/pubmed/31889079 http://dx.doi.org/10.1038/s41598-019-56730-2 |
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author | Kim, Hyeong Jin Wang, Wenjie Bu, Wei Hossen, Md Mir Londoño-Calderon, Alejandra Hillier, Andrew C. Prozorov, Tanya Mallapragada, Surya Vaknin, David |
author_facet | Kim, Hyeong Jin Wang, Wenjie Bu, Wei Hossen, Md Mir Londoño-Calderon, Alejandra Hillier, Andrew C. Prozorov, Tanya Mallapragada, Surya Vaknin, David |
author_sort | Kim, Hyeong Jin |
collection | PubMed |
description | Although challenging, assembling and orienting non-spherical nanomaterials into two- and three-dimensional (2D and 3D) ordered arrays can facilitate versatile collective properties by virtue of their shape-dependent properties that cannot be realized with their spherical counterparts. Here, we report on the self-assembly of gold nanorods (AuNRs) into 2D films at the vapor/liquid interface facilitated by grafting them with poly(ethylene glycol) (PEG). Using surface sensitive synchrotron grazing incidence small angle X-ray scattering (GISAXS) and specular X-ray reflectivity (XRR), we show that PEG-AuNRs in aqueous suspensions migrate to the vapor/liquid interface in the presence of salt, forming a uniform monolayer with planar-to-surface orientation. Furthermore, the 2D assembled PEG functionalized AuNRs exhibit short range order into rectangular symmetry with side-by-side and tail-to-tail nearest-neighbor packing. The effect of PEG chain length and salt concentration on the 2D assembly are also reported. |
format | Online Article Text |
id | pubmed-6937238 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-69372382020-01-06 Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods Kim, Hyeong Jin Wang, Wenjie Bu, Wei Hossen, Md Mir Londoño-Calderon, Alejandra Hillier, Andrew C. Prozorov, Tanya Mallapragada, Surya Vaknin, David Sci Rep Article Although challenging, assembling and orienting non-spherical nanomaterials into two- and three-dimensional (2D and 3D) ordered arrays can facilitate versatile collective properties by virtue of their shape-dependent properties that cannot be realized with their spherical counterparts. Here, we report on the self-assembly of gold nanorods (AuNRs) into 2D films at the vapor/liquid interface facilitated by grafting them with poly(ethylene glycol) (PEG). Using surface sensitive synchrotron grazing incidence small angle X-ray scattering (GISAXS) and specular X-ray reflectivity (XRR), we show that PEG-AuNRs in aqueous suspensions migrate to the vapor/liquid interface in the presence of salt, forming a uniform monolayer with planar-to-surface orientation. Furthermore, the 2D assembled PEG functionalized AuNRs exhibit short range order into rectangular symmetry with side-by-side and tail-to-tail nearest-neighbor packing. The effect of PEG chain length and salt concentration on the 2D assembly are also reported. Nature Publishing Group UK 2019-12-30 /pmc/articles/PMC6937238/ /pubmed/31889079 http://dx.doi.org/10.1038/s41598-019-56730-2 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Kim, Hyeong Jin Wang, Wenjie Bu, Wei Hossen, Md Mir Londoño-Calderon, Alejandra Hillier, Andrew C. Prozorov, Tanya Mallapragada, Surya Vaknin, David Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods |
title | Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods |
title_full | Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods |
title_fullStr | Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods |
title_full_unstemmed | Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods |
title_short | Salt Mediated Self-Assembly of Poly(ethylene glycol)-Functionalized Gold Nanorods |
title_sort | salt mediated self-assembly of poly(ethylene glycol)-functionalized gold nanorods |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6937238/ https://www.ncbi.nlm.nih.gov/pubmed/31889079 http://dx.doi.org/10.1038/s41598-019-56730-2 |
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