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Musolino S, Shatila F, Tieman GM, Masarsky AC, Thibodeau MC, Wulff JE, Buckley HL. Light-Induced Anti-Bacterial Effect Against Staphylococcus aureus of Porphyrin Covalently Bonded to a Polyethylene Terephthalate Surface. ACS OMEGA 2022; 7:29517-29525. [PMID: 36033695 PMCID: PMC9404523 DOI: 10.1021/acsomega.2c04294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 07/28/2022] [Indexed: 06/15/2023]
Abstract
Antimicrobial photodynamic inactivation represents a promising and potentially greener alternative to conventional antimicrobials, and a solution for multidrug-resistant strains. The current study reports the development and characterization of tetra-substituted diazirine porphyrin covalently bonded to polyethylene terephthalate (PET) and its use as an antimicrobial surface. The diazirine moiety on the porphyrin was activated using a temperature of 120 °C, which initiated a C-H insertion mechanism that irreversibly functionalized the PET surface. Activation of the surface with white LED light in phosphate-buffered saline (PBS) led to singlet oxygen generation, which was detected via the degradation of 9,10-anthracenediylbis(methylene)dimalonic acid (ADMA) over time. The bactericidal effect of the 1O2-producing surface against Staphylococcus aureus was determined qualitatively and quantitatively. The growth of the pathogen beneath porphyrin-functionalized PET coupons was reduced; moreover, the PET coupons resulted in a 1.76-log reduction in cell counts after exposure to white LED light for 6 h. This is a promising material and platform for the development of safer antimicrobial surfaces, with applications in healthcare, food packaging, marine surfaces, and other surfaces in the environment.
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Affiliation(s)
- Stefania
F. Musolino
- Department
of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P
5C2, Canada
- Centre
for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Fatima Shatila
- Department
of Civil Engineering, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P
5C2, Canada
- Centre
for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Grace M.O. Tieman
- Department
of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P
5C2, Canada
- Centre
for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
- Institute
for Integrated Energy Systems (IESVic), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Anna C. Masarsky
- Department
of Civil Engineering, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P
5C2, Canada
- Centre
for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Matthew C. Thibodeau
- Department
of Civil Engineering, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P
5C2, Canada
- Centre
for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Jeremy E. Wulff
- Department
of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P
5C2, Canada
- Centre
for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Heather L. Buckley
- Department
of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P
5C2, Canada
- Department
of Civil Engineering, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P
5C2, Canada
- Centre
for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
- Institute
for Integrated Energy Systems (IESVic), University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
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