Lungu Ion, Potlog Tamara, Airinei Anton, Tigoianu Radu, Gherasim Carmen
Laboratory of Organic/Inorganic Materials for Optoelectronics, Moldova State University, 60 Al. Mateevici St., D-2009 Chisinau, Moldova.
Laboratory of Physical Chemistry of Polymers, Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, RO-700487 Iasi, Romania.
Molecules. 2025 May 23;30(11):2290. doi: 10.3390/molecules30112290.
In this study, we report the synthesis and characterization of FeO nanoparticles coated with dextran. The structural and optical properties of the Dx:FeO 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:FeO composites in water is studied using fluorescence and phosphorescence molecular spectrometry. An analysis of the absorption spectra of the Dx:FeO composite reveals the broad absorption bands with maxima at wavelengths of 227 nm, 264 nm, and 340 nm. Dx:FeO 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:FeO solution evidenced by the maxima shift for both dextran and Dx:FeO composites.
在本研究中，我们报道了包覆有葡聚糖的FeO纳米颗粒的合成与表征。通过傅里叶变换红外（FTIR）光谱、X射线衍射（XRD）和紫外可见吸收光谱对合成的Dx:FeO复合材料的结构和光学性质进行了研究。本文首次利用荧光和磷光分子光谱研究了Dx:FeO复合材料在水中的光物理性质。对Dx:FeO复合材料吸收光谱的分析揭示了在波长227 nm、264 nm和340 nm处具有最大值的宽吸收带。与葡聚糖0.07%的量子产率相比，水中的Dx:FeO复合纳米颗粒表现出较强的荧光，量子产率为0.24%。磷光光谱证实了Dx:FeO溶液中新发射带的形成，这由葡聚糖和Dx:FeO复合材料的最大值位移所证明。
