Cargando…
Polyamine Ligand-Mediated Self-Assembly of Gold and Silver Nanoparticles into Chainlike Structures in Aqueous Solution: Towards New Nanostructured Chemosensors
Polyamine ligands are very versatile compounds due to their water solubility and flexibility. In the present work, we have exploited the binding ability of a polyamine molecular linker (L(2−)) bearing different functional groups, which favors the self-assembling of silver nanoparticles (AgNPs) and g...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
WILEY-VCH Verlag
2013
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3892197/ https://www.ncbi.nlm.nih.gov/pubmed/24551567 http://dx.doi.org/10.1002/open.201300023 |
_version_ | 1782299483532427264 |
---|---|
author | Fernández-Lodeiro, Adrián Fernández-Lodeiro, Javier Núñez, Cristina Bastida, Rufina Capelo, José Luis Lodeiro, Carlos |
author_facet | Fernández-Lodeiro, Adrián Fernández-Lodeiro, Javier Núñez, Cristina Bastida, Rufina Capelo, José Luis Lodeiro, Carlos |
author_sort | Fernández-Lodeiro, Adrián |
collection | PubMed |
description | Polyamine ligands are very versatile compounds due to their water solubility and flexibility. In the present work, we have exploited the binding ability of a polyamine molecular linker (L(2−)) bearing different functional groups, which favors the self-assembling of silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) into 1D nanochains in aqueous solution. The chainlike assemblies of AuNPs and AgNPs were structurally stable for a long period of time, during which their characteristic optical properties remained unchanged. The mechanism of AuNPs and AgNPs chain assembly associated with the induction of electric dipole–dipole interactions arising from the partial ligand exchange of surface-adsorbed citrate ions by (L(2−)) was investigated. UV/Vis spectrophotometry and transmission electron microscopy (TEM) were used to determine timedependent structural changes associated with formation of the 1D nanoparticle structures. Finally, the sensing of Hg(2+) in aqueous solution using AgNPs@(L)(2−) and AuNPs@(L)(2−) assemblies was also carried out in aqueous solution. |
format | Online Article Text |
id | pubmed-3892197 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | WILEY-VCH Verlag |
record_format | MEDLINE/PubMed |
spelling | pubmed-38921972014-02-18 Polyamine Ligand-Mediated Self-Assembly of Gold and Silver Nanoparticles into Chainlike Structures in Aqueous Solution: Towards New Nanostructured Chemosensors Fernández-Lodeiro, Adrián Fernández-Lodeiro, Javier Núñez, Cristina Bastida, Rufina Capelo, José Luis Lodeiro, Carlos ChemistryOpen Full Papers Polyamine ligands are very versatile compounds due to their water solubility and flexibility. In the present work, we have exploited the binding ability of a polyamine molecular linker (L(2−)) bearing different functional groups, which favors the self-assembling of silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) into 1D nanochains in aqueous solution. The chainlike assemblies of AuNPs and AgNPs were structurally stable for a long period of time, during which their characteristic optical properties remained unchanged. The mechanism of AuNPs and AgNPs chain assembly associated with the induction of electric dipole–dipole interactions arising from the partial ligand exchange of surface-adsorbed citrate ions by (L(2−)) was investigated. UV/Vis spectrophotometry and transmission electron microscopy (TEM) were used to determine timedependent structural changes associated with formation of the 1D nanoparticle structures. Finally, the sensing of Hg(2+) in aqueous solution using AgNPs@(L)(2−) and AuNPs@(L)(2−) assemblies was also carried out in aqueous solution. WILEY-VCH Verlag 2013-12 2013-08-02 /pmc/articles/PMC3892197/ /pubmed/24551567 http://dx.doi.org/10.1002/open.201300023 Text en © 2013 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. |
spellingShingle | Full Papers Fernández-Lodeiro, Adrián Fernández-Lodeiro, Javier Núñez, Cristina Bastida, Rufina Capelo, José Luis Lodeiro, Carlos Polyamine Ligand-Mediated Self-Assembly of Gold and Silver Nanoparticles into Chainlike Structures in Aqueous Solution: Towards New Nanostructured Chemosensors |
title | Polyamine Ligand-Mediated Self-Assembly of Gold and Silver Nanoparticles into Chainlike Structures in Aqueous Solution: Towards New Nanostructured Chemosensors |
title_full | Polyamine Ligand-Mediated Self-Assembly of Gold and Silver Nanoparticles into Chainlike Structures in Aqueous Solution: Towards New Nanostructured Chemosensors |
title_fullStr | Polyamine Ligand-Mediated Self-Assembly of Gold and Silver Nanoparticles into Chainlike Structures in Aqueous Solution: Towards New Nanostructured Chemosensors |
title_full_unstemmed | Polyamine Ligand-Mediated Self-Assembly of Gold and Silver Nanoparticles into Chainlike Structures in Aqueous Solution: Towards New Nanostructured Chemosensors |
title_short | Polyamine Ligand-Mediated Self-Assembly of Gold and Silver Nanoparticles into Chainlike Structures in Aqueous Solution: Towards New Nanostructured Chemosensors |
title_sort | polyamine ligand-mediated self-assembly of gold and silver nanoparticles into chainlike structures in aqueous solution: towards new nanostructured chemosensors |
topic | Full Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3892197/ https://www.ncbi.nlm.nih.gov/pubmed/24551567 http://dx.doi.org/10.1002/open.201300023 |
work_keys_str_mv | AT fernandezlodeiroadrian polyamineligandmediatedselfassemblyofgoldandsilvernanoparticlesintochainlikestructuresinaqueoussolutiontowardsnewnanostructuredchemosensors AT fernandezlodeirojavier polyamineligandmediatedselfassemblyofgoldandsilvernanoparticlesintochainlikestructuresinaqueoussolutiontowardsnewnanostructuredchemosensors AT nunezcristina polyamineligandmediatedselfassemblyofgoldandsilvernanoparticlesintochainlikestructuresinaqueoussolutiontowardsnewnanostructuredchemosensors AT bastidarufina polyamineligandmediatedselfassemblyofgoldandsilvernanoparticlesintochainlikestructuresinaqueoussolutiontowardsnewnanostructuredchemosensors AT capelojoseluis polyamineligandmediatedselfassemblyofgoldandsilvernanoparticlesintochainlikestructuresinaqueoussolutiontowardsnewnanostructuredchemosensors AT lodeirocarlos polyamineligandmediatedselfassemblyofgoldandsilvernanoparticlesintochainlikestructuresinaqueoussolutiontowardsnewnanostructuredchemosensors |