Exploring the Photophysical Properties of Some Dextran-Iron Oxide Nanoparticle Composites
In this study, we report the synthesis and characterization of Fe<sub>3</sub>O<sub>4</sub> nanoparticles coated with dextran. The structural and optical properties of the Dx:Fe<sub>3</sub>O<sub>4</sub> synthesized composites were investigated by Fourie...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-05-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/30/11/2290 |
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| Summary: | In this study, we report the synthesis and characterization of Fe<sub>3</sub>O<sub>4</sub> nanoparticles coated with dextran. The structural and optical properties of the Dx:Fe<sub>3</sub>O<sub>4</sub> synthesized composites were investigated by Fourier Transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) and UV–Vis absorption spectroscopy. For the first time in this paper, the photophysics of Dx:Fe<sub>3</sub>O<sub>4</sub> composites in water is studied using fluorescence and phosphorescence molecular spectrometry. An analysis of the absorption spectra of the Dx:Fe<sub>3</sub>O<sub>4</sub> composite reveals the broad absorption bands with maxima at wavelengths of 227 nm, 264 nm, and 340 nm. Dx:Fe<sub>3</sub>O<sub>4</sub> composite nanoparticles in water exhibit strong fluorescence with a quantum yield of 0.24% in contrast to 0.07% for dextran. Phosphorescence spectra confirm the formation of new emission bands within the Dx:Fe<sub>3</sub>O<sub>4</sub> solution evidenced by the maxima shift for both dextran and Dx:Fe<sub>3</sub>O<sub>4</sub> composites. |
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| ISSN: | 1420-3049 |