发光的Pt (II) 复合物使用非对称的Bis (二) -pyridylimino (isoisolated) 类似物
Ellie N Payce1, Richard C Knighton2, James A Platts1
1School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, U.K.
Inorganic chemistry
|April 24, 2024
概括
合成了新的 (II) 复合体,其中包含了新的非对称的链连接体. 这些复合体表现出可调节的发光特性,使其对各种应用具有前景.
科学领域:
- 协调化学 协调化学
- 有机金属化学 有机金属化学
- 材料科学 材料科学 材料科学
背景情况:
- 子连接体在协调化学中对于稳定金属中心至关重要.
- (II) 复合物因其催化和光物理性质而被广泛研究.
研究的目的:
- 为了合成和描述基于1,3-diimino-isoindoline框架的新型不对称的链配体.
- 为了研究这些连接体与的协调行为.
- 探索由此产生的 (II) 复合物的电化学和光物理性质.
主要方法:
- 联结体的合成和表征.
- 形成和隔离Pt (II) 复合物的过程.
- 光谱分析 (NMR,红外,紫外线,发光).
- 元素分析和质谱学.
- 电化学研究 (循环电压测量).
- 用于结构确定的X射线晶体学.
- 密度函数理论 (DFT) 的计算.
主要成果:
- 成功合成了不对称的N^N^N钉配体,具有多种异环分子.
- 描述Pt(II) 复合体,在一个案例中证实了扭曲的正方形平面几何.
- 电化学分析显示了Pt (II/III) 氧化和基于连接体的减少.
- 可见光吸收 (400-550纳米) 归因于连接体和金属到连接体电荷转移带.
- 在激发时观察到的发光,可通过连接物修饰调节 (550-678 nm) 的发射波长.
结论:
- 1,3-diimino-isoindoline框架提供了一个多功能平台,用于设计新的子连接体.
- 合成的Pt(II) 复合体表现出有趣的电化学和光物理特性.
- 可调节的发光可以在传感或光电子等领域提出潜在的应用.
更多相关视频
14:11Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
6.2K
12:52IridiumIII Luminescent Probe for Detection of the Malarial Protein Biomarker Histidine Rich Protein-II
Published on: July 7, 2015
9.1K
相关概念视频
01:14Photoluminescence: Applications
389
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...
389
02:34Structural Isomerism
19.2K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
19.2K
01:23Photoluminescence: Fluorescence and Phosphorescence
2.0K
Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
A pair of electrons in a...
2.0K
03:02Colors and Magnetism
11.6K
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...
11.6K
02:42Valence Bond Theory
8.5K
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...
8.5K