聚合铜(I) -NHC复合物与重的双酸盐 (N^C) 配体:合成和固态发光
Arruri Sathyanarayana1, François Réveret1, Laurent Jouffret1
1Université Clermont Auvergne, CNRS, Clermont Auvergne INP, ICCF, F-63000 Clermont-Ferrand, France. federico.cisnetti@uca.fr.
Dalton transactions (Cambridge, England : 2003)
|September 13, 2023
概括
研究人员开发了一种简单,环保的方法来制造发光铜协调聚合物. 这些材料表现出稳定性和可调节的辐射,使它们对各种应用具有前景.
科学领域:
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
- 摄影发光效应是一种光照效应.
背景情况:
- 具有庞大的捐赠体的伊米达化物是金属复合物的前体.
- 协调聚合物经常表现出有趣的光发光特性.
- 为功能性材料开发高效和可持续的合成路径至关重要.
研究的目的:
- 用一种简单和环保的方法合成新型发光铜协调聚合物.
- 研究化物/伪化物交换对铜复合物的结构和发光特性的影响.
- 在各种条件下评估合成的协调聚合物的稳定性.
主要方法:
- 铜协调聚合物的合成,从伊米达化开始.
- 从水性反应介质中过,以直接分离发光物种.
- 化物/伪化物交换反应 (Cl-, Br-, I-, NCS-, N3-). 化物/伪化物交换反应是指化物和伪化物的交换反应.
- 使用化学分析,固态光发光学研究 (包括量子产量) 和X射线衍射 (单晶和粉末) 进行表征.
主要成果:
- 通过简单的过方法合成了四种发光[Cu(C^N) Cl]协调聚合物.
- 与其他离子 (Br-, I-, NCS-, N3-) 的化物交换调节了发射的颜色,同时通常保留了聚合物结构.
- 一个二极体是由亚酸离子组成的.
- 合成的聚合物表现出对空气氧化的良好稳定性,并在热处理后保持光发光.
- 重结晶并没有显著改变聚合物发光物种的结构.
结论:
- 已经建立了一种简单,环保,坚固和可重复的合成发光铜协调聚合物的方法.
- 合成的聚合物具有可调节的排放特性和显著的稳定性,表明它们在基于发光技术的应用潜力.
- 合成策略允许轻松修改协调环境,为微调材料特性提供了一条途径.
更多相关视频
07:12Author Spotlight: Advancing Bioimaging and Therapy with Functional Nanomaterials
Published on: September 13, 2024
2.2K
19:58Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
9.7K
相关概念视频
03:02Colors and Magnetism
11.8K
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...
11.8K
02:42Valence Bond Theory
8.7K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.7K
01:07Ladder Diagrams: Complexation Equilibria
370
Ladder diagrams are useful for evaluating equilibria involving metal-ligand complexes. The vertical scale of the ladder diagram represents the concentration of unreacted or free ligand, pL. The horizontal lines on the scale depict the log of stepwise formation constants for metal-ligand complexes and indicate the dominant species in all the regions.
The formation constant, K1, for the formation of Cd(NH3)2+ complex from cadmium and ammonia is 3.55 × 102. Log K1 (i.e. pNH3) is 2.55, and...
The formation constant, K1, for the formation of Cd(NH3)2+ complex from cadmium and ammonia is 3.55 × 102. Log K1 (i.e. pNH3) is 2.55, and...
370
02:51Metal-Ligand Bonds
20.9K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.9K
01:26Variables Affecting Phosphorescence and Fluorescence
526
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...
526
02:57Coordination Number and Geometry
15.9K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
15.9K