Issue 49, 2015
From the journal:

RSC Advances

Antibacterial textiles functionalized by layer-by-layer assembly of polyelectrolytes and TiO2 photocatalyst†

Gaëlle Carré,*ab   Laurent Garnier,b   Janina Moeller-Siegert,a   Jean-Pierre Gies,b   Valérie Keller,a   Philippe Andréb  and  Nicolas Keller*a  

* Corresponding authors

a Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), CNRS and Strasbourg University, 25 rue Becquerel, 67087 Strasbourg Cedex, France
E-mail: nkeller@unistra.fr, carregaelle1@gmail.com

b Laboratoire de Biophotonique et Pharmacologie, CNRS and Strasbourg University, 74 route du Rhin, 67400 Illkirch, France

Abstract

The sprayed layer-by-layer assembly of TiO2 photocatalyst has been efficiently used for functionalizing polyester textiles and elaborating solar light active antibacterial textiles. Polyethylenimine (PEI) and polyanionic poly(styrene sulfonate) (PSS) polyelectrolytes have been used as polycation and polyanion layers, in alternation with dispersions of negatively- and positively-charged TiO2 particles, respectively. A synergistic effect resulting from both biocidal photocatalytic activity of TiO2 layers and biocidal activity of PEI layers within the multilayer system was put forward for explaining the high self-decontaminating activity of (PEI/TiO2)n functionalized textiles, 5 log of cell viability reduction being achieved with a single TiO2 layer at 50 μg cm−2. The sole solar light photocatalytic antibacterial activity of multilayer textiles was determined by masking the biocidal activity of PEI layers through the controlled assembly of PEI/(PSS/TiO2)n multilayers.

Graphical abstract: Antibacterial textiles functionalized by layer-by-layer assembly of polyelectrolytes and TiO2 photocatalyst

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Article information

DOI
https://doi.org/10.1039/C5RA05541E
Article type
Paper
Submitted
28 Mar 2015
Accepted
22 Apr 2015
First published
22 Apr 2015

RSC Adv., 2015,5, 38859-38867

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Antibacterial textiles functionalized by layer-by-layer assembly of polyelectrolytes and TiO2 photocatalyst

G. Carré, L. Garnier, J. Moeller-Siegert, J. Gies, V. Keller, P. André and N. Keller, RSC Adv., 2015, 5, 38859 DOI: 10.1039/C5RA05541E

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