兴奋剂度对MoO3的发光特性的影响:Tb3+纳米带
A V Avani1, Chrisma Rose Babu1, S Shaji2
1Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, Karnataka, India.
Luminescence : the journal of biological and chemical luminescence
|November 14, 2025
概括
与稀土合的三氧化 (MoO3) 纳米带合的 (Tb3+) 呈现出有希望的蓝绿色和绿白色的排放. 这些MoO3:Tb3+纳米带显示了先进显示和生物医学成像应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 发光的光度是非常的低.
背景情况:
- 稀土合氧化物纳米材料对于显示和生物医学成像至关重要.
- 三氧化物 (MoO3) 由于其光学特性,是纳米的有希望的宿主材料.
- 在MoO3纳米结构中的 (Tb3+) 兴奋剂正在探索增强发光.
研究的目的:
- 用水热方法合成和描述MoO3:Tb3+纳米带.
- 研究结构,光学,形态和光发光的特性.
- 了解光发光的机制,包括度火和寿命.
主要方法:
- 热合成MoO3:Tb3+纳米带与不同的Tb3+度.
- 使用野外发射扫描电子显微镜 (FESEM),传输电子显微镜 (TEM) 和X射线光电子光谱 (XPS) 的表征.
- 光发光谱学,生命周期测量和CIE色度分析.
主要成果:
- 纳米带形态由FESEM和TEM证实;Tb3+合并通过XPS进行验证.
- 在260nm激发下,在2mol%Tb3+兴奋下达到最佳光发光强度,显示蓝绿色辐射.
- 500°C的火导致绿白色的辐射,光发光寿命为~1.1μs.
- 双极-双极相互作用被确定为火机制,临界距离为17 Å.
结论:
- MoO3:Tb3+纳米带已经成功合成和表征.
- 该材料表现出高效的光发光,可调整从蓝绿色到绿白色.
- 这些发现凸显了MoO3:Tb3+纳米带作为显示和生物成像的高效光剂的潜力.
更多相关视频
07:24Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
18.4K
08:31Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells
Published on: September 16, 2014
12.5K
相关概念视频
03:02Colors and Magnetism
13.9K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
13.9K
01:14Photoluminescence: Applications
983
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
983
01:26Variables Affecting Phosphorescence and Fluorescence
1.2K
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
1.2K