title: One-step synthesis and characterization of polyaniline nanofiber/silver nanoparticle composite networks as antibacterial agents.
abstract: Through a facile and effective seeding polymerization reaction via a one-step redox/complexation process, which took place in aqueous medium at ambient temperature, silver nanoparticles (Ag NPs) embedded polyaniline nanofiber (PANI NF) networks were synthesized as antibacterial agents. During the reaction, not only NF morphology formation of the resulting conducting polymers (CPs) but also amplification of the aqueous silver nitrate (AgNO3) solutions' oxidative potentials were managed by vanadium pentoxide (V2O5) sol-gel nanofibers, which acted as well-known nanofibrous seeding agents and the auxiliary oxidative agent at the same time. The PANI/Ag nanocomposites were proven to exhibit excellent antibacterial property against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus. Antibacterial property performance and average life span of the nanocomposite network were optimized through the homogeneous distribution/embedment of Ag NPs within one-dimensional (1-D) PANI NF matrix. The antibacterial efficacy tests and nanocomposite material characterization results further indicated that the sole components of PANI/Ag have a synergistic effect to each other in terms of antibacterial property. Thus, this well-known catalytic seeding approach via a one-step oxidative polymerization reaction can be considered as a general methodology and a substantial fabrication tool to synthesize Ag NP decorated nanofibrillar PANI networks as advanced antibacterial agents.
authors.affiliation: Department of Polymer and Fiber Engineering, Auburn University , Auburn, Alabama 36849, United States.
authors.forename: Selcuk
authors.initials: S
authors.lastname: Poyraz
authors.forename: Idris
authors.initials: I
authors.lastname: Cerkez
authors.forename: Tung Shi
authors.initials: TS
authors.lastname: Huang
authors.forename: Zhen
authors.initials: Z
authors.lastname: Liu
authors.forename: Litao
authors.initials: L
authors.lastname: Kang
authors.forename: Jujie
authors.initials: J
authors.lastname: Luo
authors.forename: Xinyu
authors.initials: X
authors.lastname: Zhang
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D004926:Escherichia coli / Q000187:drug effects; D053768:Metal Nanoparticles / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry*; D010084:Oxidation-Reduction; D058105:Polymerization; D012834:Silver / Q000737:chemistry*; D013211:Staphylococcus aureus / Q000187:drug effects; D017968:Vanadium Compounds / Q000737:chemistry
chemical_list: D000814:Aniline Compounds; D000900:Anti-Bacterial Agents; D017968:Vanadium Compounds; C416807:polyaniline; D012834:Silver; C066075:vanadium pentoxide
keywords: antibacterial property; nanocomposite; polyaniline nanofiber; silver nanoparticle