Issue 118, 2015
From the journal:

RSC Advances

Tailoring the optical properties of ZnO nano-layers and their effect on in vitro biocompatibility

Vincent Rogé,*ab   Anastasia Georgantzopoulou,c   Kahina Mehennaoui,c   Ioana Fechete,b   François Garin,b   Aziz Dinia,d   Arno C. Gutlebc  and  Damien Lenoble*a  

* Corresponding authors

a Materials Research and Technology (MRT) Department, Luxembourg Institute of Science and Technology (LIST), 5, avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg
E-mail: damien.lenoble@list.lu

b Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), UMR 7515, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
E-mail: garin@unistra.fr

c Environnemental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5, avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg
E-mail: arno.gutleb@list.lu

d Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, 23 rue du Loess, 67034 Strasbourg cedex 2, France
E-mail: aziz.dinia@ipcms.unistra.fr

Abstract

This paper highlights the use of Al2O3 and SnO2 films as protecting layers to tailor the optical properties and biocompatibility of ZnO nano-films. ZnO, ZnO/Al2O3 and ZnO/SnO2 nano-films have been deposited inside 3-dimensional (3D) structures such as anodic aluminium oxide (AAO) membranes via a gas phase atomic layer deposition (ALD) process. We show that ZnO/Al2O3 multilayers exhibit improved excitonic photoluminescence properties compared to ZnO only, whereas ZnO/SnO2 multilayers quench the near band edge emission signal. In addition, in vitro experiments on Caco-2/TC7 cells and Vibrio fischeri bacteria reveal that ZnO/Al2O3 and ZnO/SnO2 multilayers display enhanced biocompatibility in liquid media compared to ZnO. We attribute the improvement of the biocompatibility to a lower dissolution of the ZnO nano-film when protected by Al2O3 or SnO2.

Graphical abstract: Tailoring the optical properties of ZnO nano-layers and their effect on in vitro biocompatibility

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Article information

DOI
https://doi.org/10.1039/C5RA16156H
Article type
Paper
Submitted
11 Aug 2015
Accepted
05 Nov 2015
First published
09 Nov 2015

RSC Adv., 2015,5, 97635-97647

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Tailoring the optical properties of ZnO nano-layers and their effect on in vitro biocompatibility

V. Rogé, A. Georgantzopoulou, K. Mehennaoui, I. Fechete, F. Garin, A. Dinia, A. C. Gutleb and D. Lenoble, RSC Adv., 2015, 5, 97635 DOI: 10.1039/C5RA16156H

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