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Nanomaterials 2017, 7(9), 272; doi:10.3390/nano7090272

Comparison of Ti-Based Coatings on Silicon Nanowires for Phosphopeptide Enrichment and Their Laser Assisted Desorption/Ionization Mass Spectrometry Detection

1
University Lille, CNRS, Centrale Lille, ISEN, University Valenciennes, IEMN, UMR CNRS 8520, Avenue Poincaré, BP 60069, 59652 Villeneuve d’Ascq, France
2
Laboratory of Semi-Conductors, Nano-Structures and Advanced Technologies, Research and Technology Centre of Energy, Borj-Cedria Science and Technology Park, BP 95, 2050 Hammam-Lif, Tunisia
3
Faculty of Science of Bizerte, University of Carthage, 7021 Zarzouna, Tunisia
4
Unité Matériaux et Transformations (UMET), UMR CNRS 8207, Université Lille1, Cité Scientifique, 59655 Villeneuve d’Ascq, France
*
Author to whom correspondence should be addressed.
Received: 15 August 2017 / Revised: 4 September 2017 / Accepted: 9 September 2017 / Published: 15 September 2017
(This article belongs to the Special Issue Nanomaterials for Mass Spectrometry Applications)
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Abstract

We created different TiO2-based coatings on silicon nanowires (SiNWs) by using either thermal metallization or atomic layer deposition (ALD). The fabricated surfaces were characterized by X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDX), and reflectivity measurements. Surfaces with different TiO2 based coating thicknesses were then used for phosphopeptide enrichment and subsequent detection by laser desorption/ionization mass spectrometry (LDI-MS). Results showed that the best enrichment and LDI-MS detection were obtained using the silicon nanowires covered with 10 nm of oxidized Ti deposited by means of thermal evaporation. This sample was also able to perform phosphopeptide enrichment and MS detection from serum. View Full-Text
Keywords: silicon nanowires; titania; phosphopeptides; LDI-MS; serum silicon nanowires; titania; phosphopeptides; LDI-MS; serum
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Kurylo, I.; Hamdi, A.; Addad, A.; Boukherroub, R.; Coffinier, Y. Comparison of Ti-Based Coatings on Silicon Nanowires for Phosphopeptide Enrichment and Their Laser Assisted Desorption/Ionization Mass Spectrometry Detection. Nanomaterials 2017, 7, 272.

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