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. 2016 Jul 13;14:58. doi: 10.1186/s12951-016-0211-z

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© The Author(s) 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — FT-IR pattern of silver coated single walled carbon nanotubes (SWCNTs-Ag) functionalized with the antimicrobial peptide TP359. SWCNTs-Ag were either carboxylated using TSC and subsequently functionalized with TP359 (FSWCNTs-Ag) or simply mixed with TP359 (SWCNTs-Ag-M) and FT-IR spectra of both the formulations was investigated. a SWCNTs-Ag; b TP359; c FSWCNTs-Ag; d SWCNTs-Ag-M. The characteristic peaks for amine groups (N–H) at 1580–1650 cm⁻¹, alkane group (C–H) at 3100 cm⁻¹, carbonyl group (C=O) at 1760 cm⁻¹ and carboxylic group (O–H) at 3300 cm⁻¹ was observed on TP359, FSWCNTs-Ag and SWCNTs-Ag-M