周期性dithioether功能化trifenylamine连接体及其机械反应Cu (I) 协调聚合物的溶解色态行为
Dilip Pandey1, Gopal Singh1, Shivendu Mishra1
1Department of Chemistry, Indian Institute of Technology, Indore, MP, India, 452020. r.abhinav@iiti.ac.in.
Dalton transactions (Cambridge, England : 2003)
|September 26, 2023
概括
基于铜的新型协调聚合物 (CPs) 具有独特的三烯胺配体,具有可调节的排放特性. 机械研磨改变了它们的发光,这表明了新型排放材料和传感器的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学 有机化学
- 发光的光度是非常的低.
背景情况:
- 基于铜的协调聚合物 (CPs) 是有价值的排放材料.
- 有机配体显著影响CPs的发光特性.
- 三烯胺衍生物因其发射和电荷转移特性而被探索.
研究的目的:
- 合成和表征新的二甲和二甲替代的三胺联体 (L1和L2).
- 探索这些配体与Cu (I) X盐的协调化学.
- 研究由此产生的协调聚合物 (CP) 的发光特性和机械研磨的效果.
主要方法:
- 三烯胺配体L1和L2的合成.
- 与Cu (I) Br和Cu (I) Cl结合的带的协调形成1D CP.
- 合成CP的晶体学表征.
- 对发光性质的光谱分析,包括solvatochromism和对机械研磨的反应.
主要成果:
- 四种新的基于1D Cu(I) 的协调聚合物 (CP1-CP4) 已成功合成和表征.
- 带和CP表现出发光,带通过扭曲的分子内电荷转移 (TICT) 显示出溶色.
- 机械研磨引发了排放最大值的明显变化 (CP1/CP2的蓝色,CP3/CP4的红色) 和增加的排放强度,表明分子构成和聚合引起的排放现象的变化.
结论:
- 合成的基于Cu (I) 的CP表现出以体为中心的发射.
- 机械研磨可以通过改变分子排列来有效调整这些CP的发光.
- 这些发现突出了这些新型CP的潜力,作为传感应用的适应性排放材料.
相关概念视频
Colors 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
Crystal Field Theory - Octahedral Complexes
26.7K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.7K
Complexometric Titration: Ligands
987
Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
987
Valence Bond Theory
8.6K
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...
8.6K
Structural Isomerism
19.3K
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...
19.3K
Stereoisomerism
12.0K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
12.0K


