Covalent functionalization of polypropylene filters with diazirine–photosensitizer conjugates producing visible light driven virus inactivating materials

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dc.contributor.authorCuthbert, T. J.
dc.contributor.authorEnnis, S.
dc.contributor.authorMusolino, S. F.
dc.contributor.authorBuckley, H. L.
dc.contributor.authorNiikura, M.
dc.contributor.authorWulff, J. E.
dc.contributor.authorMenon, C.
dc.date.accessioned2024-01-24T23:48:20Z
dc.date.available2024-01-24T23:48:20Z
dc.date.copyright2021en_US
dc.date.issued2021
dc.descriptionThe authors thank Mary McFarland and Peter Berrang of XlynX Materials for helpful discussions, Liting Bi for collection of DSC data, Dr. Gordon Herwig at EMPA for filtration efficiency testing support, and Dr. Karsten Kunze at SCOPE-M ETH Zürich for SEM imaging support.en_US
dc.description.abstractThe SARS-CoV-2 pandemic has highlighted the weaknesses of relying on single-use mask and respirator personal protective equipment (PPE) and the global supply chain that supports this market. There have been no major innovations in filter technology for PPE in the past two decades. Nonwoven textiles used for filtering PPE are single-use products in the healthcare environment; use and protection is focused on preventing infection from airborne or aerosolized pathogens such as Influenza A virus or SARS-CoV-2. Recently, C–H bond activation under mild and controllable conditions was reported for crosslinking commodity aliphatic polymers such as polyethylene and polypropylene. Significantly, these are the same types of polymers used in PPE filtration systems. In this report, we take advantage of this C–H insertion method to covalently attach a photosensitizing zinc-porphyrin to the surface of a melt-blow non-woven textile filter material. With the photosensitizer covalently attached to the surface of the textile, illumination with visible light was expected to produce oxidizing 1O2/ROS at the surface of the material that would result in pathogen inactivation. The filter was tested for its ability to inactivate Influenza A virus, an enveloped RNA virus similar to SARS-CoV-2, over a period of four hours with illumination of high intensity visible light. The photosensitizer-functionalized polypropylene filter inactivated our model virus by 99.99% in comparison to a control.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipWe gratefully acknowledge Mitacs Canada for operating funds (award #IT17318) and for a fellowship to S.M. Additional project funds were provided by XlynX Materials.en_US
dc.identifier.citationCuthbert, T. J., Ennis, S., Musolino, S. F., Buckley, H. L., Niikura, M., Wulff, J. E., & Menon, C. (2021). Covalent functionalization of polypropylene filters with diazirine–photosensitizer conjugates producing visible light driven virus inactivating materials. Scientific Reports, 11, 19029. https://doi.org/10.1038/s41598-021-98280-6en_US
dc.identifier.urihttps://doi.org/10.1038/s41598-021-98280-6
dc.identifier.urihttp://hdl.handle.net/1828/15877
dc.language.isoenen_US
dc.publisherScientific Reportsen_US
dc.subject.departmentDepartment of Civil Engineering
dc.subject.departmentDepartment of Chemistry
dc.titleCovalent functionalization of polypropylene filters with diazirine–photosensitizer conjugates producing visible light driven virus inactivating materialsen_US
dc.typeArticleen_US

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