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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MDPI AG
2025-05-01
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| Series: | Molecules |
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| author | Ion Lungu Tamara Potlog Anton Airinei Radu Tigoianu Carmen Gherasim |
| author_facet | Ion Lungu Tamara Potlog Anton Airinei Radu Tigoianu Carmen Gherasim |
| author_sort | Ion Lungu |
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| description | 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. |
| format | Article |
| id | doaj-art-4adda192001146d6b51ce715a57db8a2 |
| institution | DOAJ |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj-art-4adda192001146d6b51ce715a57db8a22025-08-20T03:11:22ZengMDPI AGMolecules1420-30492025-05-013011229010.3390/molecules30112290Exploring the Photophysical Properties of Some Dextran-Iron Oxide Nanoparticle CompositesIon Lungu0Tamara Potlog1Anton Airinei2Radu Tigoianu3Carmen Gherasim4Laboratory of Organic/Inorganic Materials for Optoelectronics, Moldova State University, 60 Al. Mateevici St., D-2009 Chisinau, MoldovaLaboratory of Organic/Inorganic Materials for Optoelectronics, Moldova State University, 60 Al. Mateevici St., D-2009 Chisinau, MoldovaLaboratory of Physical Chemistry of Polymers, Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, RO-700487 Iasi, RomaniaLaboratory of Physical Chemistry of Polymers, Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, RO-700487 Iasi, RomaniaLaboratory of Physical Chemistry of Polymers, Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, RO-700487 Iasi, RomaniaIn 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.https://www.mdpi.com/1420-3049/30/11/2290FTIRUV–Vis and transient absorption spectroscopyfluorescence and phosphorescence spectra |
| spellingShingle | Ion Lungu Tamara Potlog Anton Airinei Radu Tigoianu Carmen Gherasim Exploring the Photophysical Properties of Some Dextran-Iron Oxide Nanoparticle Composites Molecules FTIR UV–Vis and transient absorption spectroscopy fluorescence and phosphorescence spectra |
| title | Exploring the Photophysical Properties of Some Dextran-Iron Oxide Nanoparticle Composites |
| title_full | Exploring the Photophysical Properties of Some Dextran-Iron Oxide Nanoparticle Composites |
| title_fullStr | Exploring the Photophysical Properties of Some Dextran-Iron Oxide Nanoparticle Composites |
| title_full_unstemmed | Exploring the Photophysical Properties of Some Dextran-Iron Oxide Nanoparticle Composites |
| title_short | Exploring the Photophysical Properties of Some Dextran-Iron Oxide Nanoparticle Composites |
| title_sort | exploring the photophysical properties of some dextran iron oxide nanoparticle composites |
| topic | FTIR UV–Vis and transient absorption spectroscopy fluorescence and phosphorescence spectra |
| url | https://www.mdpi.com/1420-3049/30/11/2290 |
| work_keys_str_mv | AT ionlungu exploringthephotophysicalpropertiesofsomedextranironoxidenanoparticlecomposites AT tamarapotlog exploringthephotophysicalpropertiesofsomedextranironoxidenanoparticlecomposites AT antonairinei exploringthephotophysicalpropertiesofsomedextranironoxidenanoparticlecomposites AT radutigoianu exploringthephotophysicalpropertiesofsomedextranironoxidenanoparticlecomposites AT carmengherasim exploringthephotophysicalpropertiesofsomedextranironoxidenanoparticlecomposites |