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- W2314087873 abstract "Polymeric nanofiber materials loaded with photosensitizers exhibit significant antibacterial activity due to their generation of cytotoxic singlet oxygen O2(1Δg). A time-gated fluorescence imaging technique was used to monitor the photosensitized processes in polystyrene (PS) and gelatin (GE) nanofibers loaded with 0.1 wt % tetraphenylporphyrin (TPP) photosensitizer. The fluorescence decay of TPP at the periphery of the PS nanofibers was single exponential. Increased fluorescence quenching was observed in the domains with higher TPP loading, located in the center of the nanofibers, and added a shorter lifetime component to the kinetics. The domains exhibiting singlet oxygen activity within the nanofibers were visualized and analyzed by singlet oxygen-sensitized delayed fluorescence imaging (SODF). Whereas O2(1Δg) was produced in PS nanofibers, its production in GE nanofibers was limited. These results were confirmed by time-resolved phosphorescence measurements at 1270 nm." @default.
- W2314087873 created "2016-06-24" @default.
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- W2314087873 date "2010-11-15" @default.
- W2314087873 modified "2023-10-16" @default.
- W2314087873 title "Singlet Oxygen Imaging in Polymeric Nanofibers by Delayed Fluorescence" @default.
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- W2314087873 doi "https://doi.org/10.1021/jp105789p" @default.
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