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