Synthesis of antibacterial flower-like silver nanostructures by self-assembly of diphenylalanine peptide on graphite

Micro & nano letters

article

Alireza Allafchian¹  Seyed Hosein Mousavi¹  Seyed Amir Hossein Jalali² 

[1] Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology;Research Institute for Biotechnology and Bioengineering, Isfahan University of Technology;Department of Natural Resources, Isfahan University of Technology

关键词: antibacterial activity;    ultraviolet spectra;    reduction (chemical);    nanomedicine;    silver;    X-ray diffraction;    scanning electron microscopy;    microorganisms;    biomedical materials;    visible spectra;    molecular biophysics;    graphite;    nanofabrication;    nanoparticles;    self-assembly;    Fourier transform infrared spectra;    cellular biophysics;    proteins;    biochemistry;    diphenylalanine peptide;    silver nanoflowers;    self-assembly;    graphite surface;    pencil graphite rods;    antibacterial flower-like silver nanostructures;    scanning electron microscopy;    Fourier transform infrared spectroscopy;    FT-IR spectroscopy;    X-ray diffraction;    XRD;    morphological analysis;    sheet nanostructures;    cubic lattice structure;    Kirby-Bauer disk diffusion tests;    Gram-positive bacterial strains;    Gram-negative bacterial strains;    Ag;   

DOI  :  10.1049/mnl.2020.0076

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Preparation of silver nanoflowers (Ag NFs) was carried out through the self-assembly process of diphenylalanine (FF) peptide on the graphite surface. Pencil graphite rods were used as a substrate for the self-assembly process. A reduction reaction by hydrazine was employed in the synthesis procedure of the Ag NFs. scanning electron microscope, Fourier transform infrared spectroscopy (FT-IR) spectroscopy and X-ray diffraction (XRD) were employed to characterise the obtained Ag NFs. The morphological analysis of the Ag NFs revealed assemblies constructed by multiple sheet nanostructures designed as flower petals and positioned in the form of 3D semi-spherical arrangements. The successful synthesis of Ag NFs was confirmed by FT-IR characteristic bands of FF and Ag components. The cubic lattice structure of the Ag NFs was revealed by XRD. Standard Kirby–Bauer disk diffusion tests using Gram-positive and Gram-negative bacterial strains exhibited the promising antibacterial performance of the Ag NFs against all of the tested bacterial species.

【 授权许可】

CC BY|CC BY-ND|CC BY-NC|CC BY-NC-ND