申请人:Clemson University
公开号:US20140093550A1
公开(公告)日:2014-04-03
A system of stabilized metallic nanoparticles is described that includes metallic nanoparticles coated with a hydrophilic polymer that has been reacted with a catechol-based ligand. Also described are stable, metallic nanoparticles that can be used alone or in conjunction with biocides, antibiotics, or other treatment systems in a method to disrupt a biofilm and facilitate its removal from a surface. The nanoparticles can be metal, such as platinum, silver, iron (II, III) oxide (Fe
3
O
4
), and gold. The nanoparticles can be sterically stabilized, such as with a polymer, or charge stabilized, such as with citrate, resulting in nanoparticles having modified surfaces. This surface modification is thought to enhance the stability of the nanoparticles and decrease their likelihood of aggregation, which, in turn, enhances their ability to disrupt and disperse existing biofilms.
本文介绍了一种稳定的金属纳米颗粒体系,其中包括涂有与儿茶酚基配体反应的亲水性聚合物的金属纳米颗粒。同时还介绍了稳定的金属纳米颗粒,可以单独使用或与杀菌剂、抗生素或其他处理系统一起使用,以破坏生物膜并促进其从表面上去除。纳米颗粒可以是金属,如铂、银、铁(II,III)氧化物(Fe3O4)和金。纳米颗粒可以被立体稳定,例如用聚合物,或者被电荷稳定,例如用柠檬酸盐,从而产生具有改性表面的纳米颗粒。这种表面修饰被认为可以增强纳米颗粒的稳定性并降低它们聚集的可能性,进而增强它们破坏和分散现有生物膜的能力。