一系列基于稀土金属的协调聚合物:光和传感研究
Nian-Hao Wang1,2,3, Jin-Mei Liu1,2,3, Bin Tan2
1College of Chemistry, Fuzhou University, Fuzhou 350116, China.
Sensors (Basel, Switzerland)
|November 9, 2024
概括
这项研究引入了双发射光协调聚合物 (FL-CPs) 进行准确和视觉传感. eu-bpdc展示了Fe3+离子的比度检测,改变颜色以方便监测.
科学领域:
- 材料科学 材料科学 材料科学
- 协调化学 协调化学
- 分析化学 分析化学
背景情况:
- 与单色系统相比,使用双发射光协调聚合物 (FL-CPs) 的比度度光传感提供了更高的准确性和可视化.
- 基于稀土金属的协调聚合物 (Ln-CPs) 是由于其双重排放特性而被探索的,这些特性来自于金属离子和合物到金属的能量转移.
研究的目的:
- 合成和描述一系列具有双重排放特性的稀土金属基CP.
- 研究这些Ln-CPs作为比度光传感器的潜力,特别是Fe3+离子.
- 为了证明可视监控传感过程.
主要方法:
- 基于稀土金属的CP的合成,其配方是[(CH3) 2NH2][Ln(bpdc) 2 (Ln = Y, Eu, Tb; H2bpdc = 双-4,4'-二碳酸).
- 由Ln3+离子和体-金属能量转移产生的双排放性质的表征.
- 评估Eu-bpdc作为光传感材料的Fe3+离子使用光强度比.
主要成果:
- 合成的Ln-CPs (Eu-bpdc,Tb-bpdc,Y-bpdc) 具有双重的排放.
- Eu-bpdc显示了光强度比 (I415/I615) 和Fe3+离子度之间的良好线性关系.
- 使用Eu-bpdc作为探针检测Fe3+离子,通过从紫色到蓝色的颜色变化可见地监测.
结论:
- 基于稀土金属的CP可以有效地作为二重发射材料用于比度光传感.
- 欧-bpdc作为一个有前途的材料用于视觉和比度检测Fe3+离子.
- 这项工作为开发基于FL-CPs的可见比度传感器提供了有价值的例子.
相关概念视频
03:02Colors and Magnetism
11.5K
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...
11.5K
01:14Photoluminescence: Applications
379
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...
379
01:26Variables Affecting Phosphorescence and Fluorescence
489
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...
489