Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates

Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates

A novel and facile method was developed to produce hybrid graphene oxide (GO)–polyelectrolyte (PE) capsules using erythrocyte cells as templates. The capsules are easily produced through the layer-by-layer technique using alternating polyelectrolyte layers and GO sheets. The amount of GO and therefo...

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Main Authors: Irigoyen, Joseba, Politakos, Nikolaos, Diamanti, Eleftheria, Rojas, Elena, Marradi, Marco, Ledezma, Raquel, Arizmendi, Layza, Rodríguez, J Alberto, Ziolo, Ronald F, Moya, Sergio E
Format: Online
Language:English
Published: Beilstein-Institut 2015
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4685910/
id pubmed-4685910
recordtype oai_dc
spelling pubmed-46859102016-01-05 Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates Irigoyen, Joseba Politakos, Nikolaos Diamanti, Eleftheria Rojas, Elena Marradi, Marco Ledezma, Raquel Arizmendi, Layza Rodríguez, J Alberto Ziolo, Ronald F Moya, Sergio E Full Research Paper A novel and facile method was developed to produce hybrid graphene oxide (GO)–polyelectrolyte (PE) capsules using erythrocyte cells as templates. The capsules are easily produced through the layer-by-layer technique using alternating polyelectrolyte layers and GO sheets. The amount of GO and therefore its coverage in the resulting capsules can be tuned by adjusting the concentration of the GO dispersion during the assembly. The capsules retain the approximate shape and size of the erythrocyte template after the latter is totally removed by oxidation with NaOCl in water. The PE/GO capsules maintain their integrity and can be placed or located on other surfaces such as in a device. When the capsules are dried in air, they collapse to form a film that is approximately twice the thickness of the capsule membrane. AFM images in the present study suggest a film thickness of approx. 30 nm for the capsules in the collapsed state implying a thickness of approx. 15 nm for the layers in the collapsed capsule membrane. The polyelectrolytes used in the present study were polyallylamine hydrochloride (PAH) and polystyrenesulfonate sodium salt (PSS). Capsules where characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), dynamic light scattering (DLS) and Raman microscopy, the constituent layers by zeta potential and GO by TEM, XRD, and Raman and FTIR spectroscopies. Beilstein-Institut 2015-12-04 /pmc/articles/PMC4685910/ /pubmed/26734521 http://dx.doi.org/10.3762/bjnano.6.237 Text en Copyright © 2015, Irigoyen et al; licensee Beilstein-Institut. http://www.beilstein-journals.org/bjnano This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), 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: (http://www.beilstein-journals.org/bjnano)
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Irigoyen, Joseba
Politakos, Nikolaos
Diamanti, Eleftheria
Rojas, Elena
Marradi, Marco
Ledezma, Raquel
Arizmendi, Layza
Rodríguez, J Alberto
Ziolo, Ronald F
Moya, Sergio E
spellingShingle Irigoyen, Joseba
Politakos, Nikolaos
Diamanti, Eleftheria
Rojas, Elena
Marradi, Marco
Ledezma, Raquel
Arizmendi, Layza
Rodríguez, J Alberto
Ziolo, Ronald F
Moya, Sergio E
Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates
author_facet Irigoyen, Joseba
Politakos, Nikolaos
Diamanti, Eleftheria
Rojas, Elena
Marradi, Marco
Ledezma, Raquel
Arizmendi, Layza
Rodríguez, J Alberto
Ziolo, Ronald F
Moya, Sergio E
author_sort Irigoyen, Joseba
title Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates
title_short Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates
title_full Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates
title_fullStr Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates
title_full_unstemmed Fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates
title_sort fabrication of hybrid graphene oxide/polyelectrolyte capsules by means of layer-by-layer assembly on erythrocyte cell templates
description A novel and facile method was developed to produce hybrid graphene oxide (GO)–polyelectrolyte (PE) capsules using erythrocyte cells as templates. The capsules are easily produced through the layer-by-layer technique using alternating polyelectrolyte layers and GO sheets. The amount of GO and therefore its coverage in the resulting capsules can be tuned by adjusting the concentration of the GO dispersion during the assembly. The capsules retain the approximate shape and size of the erythrocyte template after the latter is totally removed by oxidation with NaOCl in water. The PE/GO capsules maintain their integrity and can be placed or located on other surfaces such as in a device. When the capsules are dried in air, they collapse to form a film that is approximately twice the thickness of the capsule membrane. AFM images in the present study suggest a film thickness of approx. 30 nm for the capsules in the collapsed state implying a thickness of approx. 15 nm for the layers in the collapsed capsule membrane. The polyelectrolytes used in the present study were polyallylamine hydrochloride (PAH) and polystyrenesulfonate sodium salt (PSS). Capsules where characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), dynamic light scattering (DLS) and Raman microscopy, the constituent layers by zeta potential and GO by TEM, XRD, and Raman and FTIR spectroscopies.
publisher Beilstein-Institut
publishDate 2015
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4685910/
_version_ 1613515004258025472

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