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Journal of Nanomaterials
Volume 2017 (2017), Article ID 5831959, 10 pages
Research Article

Antibacterial Efficacy of Gold and Silver Nanoparticles Functionalized with the Ubiquicidin (29–41) Antimicrobial Peptide

1Universidad Autónoma del Estado de México, Facultad de Química, Toluca, MEX, Mexico
2Instituto Nacional de Investigaciones Nucleares, 52750 Ocoyoacac, MEX, Mexico
3Universidad Autónoma del Estado de México, Centro Conjunto de Investigación en Química Sustentable UNAM/UAEM, 50200 Toluca, MEX, Mexico

Correspondence should be addressed to Enrique Morales-Avila

Received 21 December 2016; Accepted 6 March 2017; Published 26 March 2017

Academic Editor: Piersandro Pallavicini

Copyright © 2017 Enrique Morales-Avila et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Supplementary Material

Figure 1. IR-FT spectra of dodecyl sulphate (SDS) and citrate stabilized gold and silver nanoparticles were used to characterize the raw materials, SDS revels some characteristics bands from vibrational modes of aliphatic chain (–CH2–, –CH3) and sulphate groups (–S=O; –C–O– and –C–O), for citrate-coated nanoparticles vibrational modes from carboxylate (–C=O; –C–OH), and carbon skeletal (–CH2–; C–C) were observed. Figure 2. IR-FT spectra of modifyed SDS nanoparticles were carried out, significant changes were observed respect to citrate stabilized nanoparticles. Characteristic peaks associated to dodecyl sulphate were observed as strong evidence of nanoparticle interaction, the biggest alterations on vibrational modes were observed for those peaks between 1600–500 cm−1, corresponding to the surfactant molecules adsorbed onto nanoparticle surface. Shifted bands suggest considerable changes in spatial arrangement of SDS molecules described as micellar layer coating nanoparticulate structures.

  1. Supplementary Material