The improved antibacterial efficiency of a zinc phthalocyanine when embedded on silver nanoparticle modified silica nanofibers |
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| Affiliation: | 1. Institute of Botany of the ASCR, Department of Experimental Phycology and Ecotoxicology, Lidicka 25/27, 602 00 Brno, Czech Republic;2. Mendel University in Brno, Faculty of Agronomy, Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Zemedelska 1, 613 00 Brno, Czech Republic;3. Centre for Organic Chemistry, Rybitvi 296, 533 54 Rybitvi, Czech Republic;4. Institute of Macromolecular Chemistry of the ASCR, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic;1. Department of Chemistry, Rhodes University, Grahamstown, 6140, South Africa;2. National Laser Centre, Council for Scientific and Industrial Research, PO Box 395, Pretoria, 0001, South Africa;3. College of Science, Engineering and Technology, Department of Physics, NB Pityana Building, University of South Africa, Science Campus, Florida, 1710, South Africa;1. Department of Nuclear Applications, Institute of Nuclear Science, Ege University, Bornova, 35100, Izmir, Turkey;2. Advanced Technology Research& Application Center, Mersin University, Ciftlikkoy Campus, TR33343, Yenisehir, Mersin, Turkey;3. Department of Energy Systems Engineering, Mersin University, Faculty of Tarsus Technology, 33480 Mersin, Turkey;4. Department of Biomedical Technology, Institute of Science, Ege University, Bornova, 35100, Izmir, Turkey;5. Department of Medical Biology, Faculty of Medicine, Ege University, Bornova, 35100, Izmir, Turkey;1. Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Izmir Katip Celebi University, Izmir, 35620, Turkey;2. Institute of Nuclear Science, Department of Nuclear Applications, Ege University, Izmir, 35100, Turkey;3. Department of Chemistry, Faculty of Science, Karadeniz Technical University, Trabzon, 61080, Turkey;4. Department of Energy Systems Engineering, Faculty of Technology, Tarsus University, Mersin, 33400, Turkey;1. Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, Ministry of Education, National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an, 710062, Shaanxi, China;2. College of Chemistry and Materials Science, Jiangsu Key Laboratory of Biofunctional Materials, Nanjing Normal University, Wenyuan Road No.1, Nanjing, 210046, China |
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| Abstract: | This work reports on the fabrication and modification of electrospun polymer free silica nanofibers (SiO2 NFs) with the aim of creating heterogeneous antibacterial catalysts. The optical and photophysical properties of the obtained NFs i.e. bare SiO2, Ag-SiO2, Pc-SiO2 and Pc@Ag-SiO2 NFs (Pc = phthalocyanine) were compared and reported. The singlet oxygen quantum yields of the Pc-SiO2 and Pc@Ag-SiO2 NFs were also quantified and found to be 0.08 and 0.12, respectively, in water. All the modified SiO2 NFs were found to possess photoactivity against S. aureus with the most effective being the Pc@Ag-SiO2 NFs due to the synergy between the Pc and Ag nanoparticles. The bare SiO2 NFs do not exhibit any antibacterial activity while the Ag-SiO2 and Pc@Ag-SiO2 NFs were found to also exhibit dark toxicity. The generated photocatalysts are attractive because they are active against bacteria and they are easily retrievable post-application. The nanocatalysts reported herein are therefore feasible candidates for real-life antibacterial applications. |
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| Keywords: | Silicon dioxide Phthalocyanine Electrospinning Photodynamic antimicrobial chemotherapy Silver nanoparticles |
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