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Article Dans Une Revue RSC Advances Année : 2015

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

Résumé

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.

Domaines

Chimie Matériaux
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Dates et versions

hal-01254844 , version 1 (12-01-2016)

Identifiants

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Vincent Rogé, Anastasia Georgantzopoulou, Kahina Mehennaoui, Ioana Fechete, François Garin, et al.. Tailoring the optical properties of ZnO nano-layers and their effect on in vitro biocompatibility . RSC Advances, 2015, 5 (118), pp.97635 - 97647. ⟨10.1039/C5RA16156H⟩. ⟨hal-01254844⟩
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