Superhydrophobic Mechano-Bactericidal Surface with Photodynamic Antibacterial Capability

Autor: Shujin Wang, Ziting Liu, Li Wang, Jianing Xu, Ru Mo, Yue Jiang, Cuie Wen, Zhihui Zhang, Luquan Ren
Rok vydání: 2022
Předmět:
Zdroj: ACS applied materialsinterfaces.
ISSN: 1944-8252
Popis: Bacterial invasion and proliferation on various surfaces pose a serious threat to public health worldwide. Conventional antibacterial strategies that mainly rely on bactericides exhibit high bacteria-killing efficiency but might trigger the well-known risk of antibiotic resistance. Here, we report a superhydrophobic mechano-bactericidal surface with photodynamically enhanced antibacterial capability. First, bioinspired nanopillars with polycarbonate as the bulk material were replicated from anodized alumina oxide templates via a simple hot-pressing molding method. Subsequently, a facile bovine serum albumin phase-transition method was used to introduce chlorin e6 onto the nanopillar-patterned surface, which was then perfluorinated to render the surface superhydrophobic. Benefiting from its strong liquid super-repellency and photodynamically enhanced mechano-bactericidal properties, the superhydrophobic nanopillar-patterned surface exhibits 100% antibacterial efficiency after 30 min visible light irradiation (650 nm, 20 mW cm
Databáze: OpenAIRE