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Open AccessArticle

Use of Cotton Textiles Coated by Ir(III) Tetrazole Complexes within Ceramic Silica Nanophases for Photo-Induced Self-Marker and Antibacterial Application

1
Institute of Science and Technology for Ceramics, CNR-ISTEC-National Research Council of Italy, Via Granarolo 64, I-48018 Faenza, RA, Italy
2
Clinical Unit of Occupational Medicine, Department of Medical and Surgical Sciences, University of Trieste, Via della Pietà 2/2, 34129 Trieste, Italy
3
Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
4
Department of Chemical and Pharmaceutical Sciences, University of Trieste, via L. Giorgieri 1, 34127 Trieste, Italy
5
Department of Pharmacy and Biotechnology, University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
6
Consorzio Sistemi a Grande Interfase (CSGI), University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
7
Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, N. Plastira 100, 70013 Heraklion, Crete, Greece
8
Department of Materials Science and Technology, University of Crete, 71003 Heraklion, Crete, Greece
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(6), 1020; https://doi.org/10.3390/nano10061020
Received: 15 April 2020 / Revised: 18 May 2020 / Accepted: 22 May 2020 / Published: 27 May 2020
(This article belongs to the Special Issue Nanotechnology in Clothing & Fabrics)
This study was aimed at the production and characterization of coated cotton textiles with luminescent ceramic nanophases doped with cationic Ir(III) tetrazole complexes. We confirmed that SiO2 nanoparticles (NPs) do not affect the phosphorescent properties of the complexes that maintain their emission (610 and 490 nm). For the first time we transferred the luminescence feature from nanosol to textile surface, highlighting the advantages of using nanosilica as an encapsulating and stabilizing matrix. The optimized [email protected]2 suspensions were homogenously applied onto the cotton surface by dip-pad-dry-cure technique, as proved by the 2p-fluorescence microscope analysis. Once we verified the self-marker properties of the Ir(III) complex, we observed an excellent washing fastness of the coating with a very limited release. SiO2 in the washing water was quantified at maximum around 1.5 wt% and Ir below the inductively coupled plasma optical emission spectrometry (ICP-OES) detection limit of 1 ppm. A Franz cell test was used to evaluate any possible ex-vivo uptake of [email protected]2 nanoparticles across human skin tissues, showing that epidermis and dermis stop over 99% of Ir, implying a reduced impact on human health. The light-induced antimicrobial potential of the [email protected]2 were assessed toward both Gram(−) and Gram(+) bacteria. The results encouraged further developments of such functional textiles coated by self-markers and antibacterial active nanophases. View Full-Text
Keywords: cotton textiles; iridium (III) luminescent complexes; silica host matrix; antibacterial properties; singlet oxygen cotton textiles; iridium (III) luminescent complexes; silica host matrix; antibacterial properties; singlet oxygen
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MDPI and ACS Style

Zanoni, I.; Blosi, M.; Fiorini, V.; Crosera, M.; Ortelli, S.; Stagni, S.; Stefan, A.; Psilodimitrakopoulos, S.; Stratakis, E.; Larese Filon, F.; Costa, A.L. Use of Cotton Textiles Coated by Ir(III) Tetrazole Complexes within Ceramic Silica Nanophases for Photo-Induced Self-Marker and Antibacterial Application. Nanomaterials 2020, 10, 1020. https://doi.org/10.3390/nano10061020

AMA Style

Zanoni I, Blosi M, Fiorini V, Crosera M, Ortelli S, Stagni S, Stefan A, Psilodimitrakopoulos S, Stratakis E, Larese Filon F, Costa AL. Use of Cotton Textiles Coated by Ir(III) Tetrazole Complexes within Ceramic Silica Nanophases for Photo-Induced Self-Marker and Antibacterial Application. Nanomaterials. 2020; 10(6):1020. https://doi.org/10.3390/nano10061020

Chicago/Turabian Style

Zanoni, Ilaria; Blosi, Magda; Fiorini, Valentina; Crosera, Matteo; Ortelli, Simona; Stagni, Stefano; Stefan, Alessandra; Psilodimitrakopoulos, Sotiris; Stratakis, Emmanuel; Larese Filon, Francesca; Costa, Anna L. 2020. "Use of Cotton Textiles Coated by Ir(III) Tetrazole Complexes within Ceramic Silica Nanophases for Photo-Induced Self-Marker and Antibacterial Application" Nanomaterials 10, no. 6: 1020. https://doi.org/10.3390/nano10061020

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