Frontiers in Chemistry (Feb 2019)
Exploring the Control in Antibacterial Activity of Silver Triangular Nanoplates by Surface Coating Modulation
- Jamila Djafari,
- Jamila Djafari,
- Jamila Djafari,
- Carlos Fernández-Lodeiro,
- Carlos Fernández-Lodeiro,
- Adrián Fernández-Lodeiro,
- Adrián Fernández-Lodeiro,
- Adrián Fernández-Lodeiro,
- Vanessa Silva,
- Vanessa Silva,
- Vanessa Silva,
- Vanessa Silva,
- Patrícia Poeta,
- Patrícia Poeta,
- Gilberto Igrejas,
- Gilberto Igrejas,
- Gilberto Igrejas,
- Carlos Lodeiro,
- Carlos Lodeiro,
- Carlos Lodeiro,
- José Luis Capelo,
- José Luis Capelo,
- José Luis Capelo,
- Javier Fernández-Lodeiro,
- Javier Fernández-Lodeiro,
- Javier Fernández-Lodeiro
Affiliations
- Jamila Djafari
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon, Caparica, Portugal
- Jamila Djafari
- PROTEOMASS Scientific Society, Rua dos Inventores, Madam Parque, Caparica, Portugal
- Jamila Djafari
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, Caparica, Portugal
- Carlos Fernández-Lodeiro
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon, Caparica, Portugal
- Carlos Fernández-Lodeiro
- PROTEOMASS Scientific Society, Rua dos Inventores, Madam Parque, Caparica, Portugal
- Adrián Fernández-Lodeiro
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon, Caparica, Portugal
- Adrián Fernández-Lodeiro
- PROTEOMASS Scientific Society, Rua dos Inventores, Madam Parque, Caparica, Portugal
- Adrián Fernández-Lodeiro
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, Caparica, Portugal
- Vanessa Silva
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, Caparica, Portugal
- Vanessa Silva
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Vanessa Silva
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Vanessa Silva
- Veterinary Science Department, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Patrícia Poeta
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, Caparica, Portugal
- Patrícia Poeta
- Veterinary Science Department, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Gilberto Igrejas
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, Caparica, Portugal
- Gilberto Igrejas
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Gilberto Igrejas
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Carlos Lodeiro
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon, Caparica, Portugal
- Carlos Lodeiro
- PROTEOMASS Scientific Society, Rua dos Inventores, Madam Parque, Caparica, Portugal
- Carlos Lodeiro
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, Caparica, Portugal
- José Luis Capelo
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon, Caparica, Portugal
- José Luis Capelo
- PROTEOMASS Scientific Society, Rua dos Inventores, Madam Parque, Caparica, Portugal
- José Luis Capelo
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, Caparica, Portugal
- Javier Fernández-Lodeiro
- BIOSCOPE Group, LAQV@REQUIMTE, Chemistry Department, Faculty of Science and Technology, NOVA University Lisbon, Caparica, Portugal
- Javier Fernández-Lodeiro
- PROTEOMASS Scientific Society, Rua dos Inventores, Madam Parque, Caparica, Portugal
- Javier Fernández-Lodeiro
- Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisbon, Caparica, Portugal
- DOI
- https://doi.org/10.3389/fchem.2018.00677
- Journal volume & issue
-
Vol. 6
Abstract
In the present work, the synthesis and characterization of silver triangular nanoplates (AgNTs) and their silica coating composites are reported. Engineering control on the surface coating has demonstrated the possibility to modulate the antibacterial effect. Several AgNT-coated nanomaterials, such as PVP (Polyvinylpyrrolidone) and MHA (16-mercaptohexadecanoic acid) as a stable organic coating system as well as uniform silica coating (≈5 nm) of AgNTs, have been prepared and fully characterized. The antibacterial properties of the systems reported, organic (MHA) and inorganic (amine and carboxylic terminated SiO2) coating nanocomposites, have been tested on Gram-positive and Gram-negative bacteria strains. We observed that the AgNTs' organic coating improved antimicrobial properties when compared to other spherical silver colloids found in the literature. We have also found that thick inorganic silica coating decreases the antimicrobial effect, but does not cancel it. In addition, the effect of surface charge in AgNTs@Si seems to play a crucial role toward S. aureus ATCC 25923 bacteria, obtaining MIC/MBC values compared to the AgNTs with an organic coating.
Keywords
