Del Campo, AdolfoEcheverría, CoroSan Martín, MiguelCuervo Rodríguez, María RocíoFernández-García, MartaMuñoz-Bonilla, Alexandra2024-02-282024-02-282019del Campo A, Echeverría C, San Martín M, Cuervo-Rodríguez R, Fernández-García M, Muñoz-Bonilla A. Porous Microstructured Surfaces with pH-Triggered Antibacterial Properties. Macromol Biosci. 2019 Jul 3; 19(8):1900127-351616-518710.1002/mabi.201900127https://hdl.handle.net/20.500.14352/101802New antibacterial films are designed with the capability to reversibly regulate their killing and repelling functions in response to variations in environmental pH. These systems consist of porous polystyrene surfaces as the main components and a copolymer bearing pH-sensitive thiazole and triazole groups as the minor components. These pH-sensitive groups, located on the surfaces, can be partially protonated at acidic pH levels, increasing the positive charge density of the surfaces and their antibacterial activity. Similarly, their bacterial adhesion and killing efficiencies in response to changes in pH are evaluated by analyzing the bacterial viability of Staphylococcus aureus bacteria on the surfaces under acidic and neutral pH values. It is demonstrated that after only 1 h of incubation with the bacterial suspension in acidic conditions, the surfaces killed the bacteria, while at pH = 7.4, some of the adhered bacteria are removed. Furthermore, the surface topography exerts an important role by intensifying this response.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/journal article1616-5195https://doi.org/10.1002/mabi.201900127restricted access547CienciasQuímica orgánica (Química)2306 Química Orgánica2304 Química Macromolecular