Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 38, Pages 25127-25136Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b08234
Keywords
nanoparticles; nanofiber; singlet oxygen; antibacterial; antiviral; oxygen-sensing
Funding
- Czech Science Foundation [16-15020S]
- Ministry of Education,Youth and Sports of the Czech Republic [LM2015073]
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A simple nanoprecipitation method was used for preparation of stable photoactive polystyrene nanoparticles (NPs, diameter 30 +/- 10 nm) from sulfonated electrospun polystyrene nanofiber membranes with encapsulated 5,10,15,20-tetraphenylporphyrin (TPP) or platinum octaethylporphyrin (Pt-OEP). The NPs prepared with TPP have strong antibacterial and antiviral properties and can be applied to the photooxidation of external substrates, based on photogenerated singlet oxygen. In contrast to nanofiber membranes, which have limited photooxidation ability near the surface, NPs are able to travel toward target species/structures. NPs with Pt-OEP were used for oxygen sensing in aqueous media, and they presented strong linear responses to a broad range of oxygen concentrations. The nanofiber membranes can be applied not only as a source of NPs but also as an effective filter for their removal from solution.
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