分子所罗门环和异常不对称的三叶草结之间的可逆结构转换
Hai-Ning Zhang1, Wen-Xi Gao1, Yue-Jian Lin1
1Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry , Fudan University , Shanghai 200433 , P. R. China.
Journal of the American Chemical Society
|September 12, 2019
概括
研究人员使用Cp*Ir复合物和二氧化连接物制造了一种新型的分子所罗门连接和三叶草结. 这些结构表现出可逆的拓变化,展示了先进的超分子化学.
科学领域:
- 协调化学
- 超分子化学
- 材料科学
背景情况:
- 分子拓和结合是化学中的基本概念,对材料科学有影响.
- 金属有机框架和协调复合体为构建复杂分子架构提供平台.
研究的目的:
- 通过Cp*Ir复合物合成和表征新的分子所罗门环节和三叶草结.
- 研究二甲基连接体在指导复杂拓结构的形成中的作用.
- 在含有金属的分子系统中探索可逆拓变化的潜力.
主要方法:
- 合成基于Cp*Ir的复合物,其中包括非刚性双联体4,4'-bis(pyridin-4-ylmethyl) -1,1'-biphenyl (BpmBp).
- 使用X射线结晶学对所产生的分子所罗门环节和三叶结的描述.
- 一种新型异金属四核 (Ir2 + Ag2) 复合物的合成和表征.
- 研究由银离子相互作用引起的拓变化.
主要成果:
- 成功实现了一个基于模板的Cp*Ir分子所罗门链和一个不寻常的三叶子结.
- 一种新型异金属四核 (Ir2 + Ag2) 复合物的高产合成,具有性相互作用.
- 在温和条件下使用银(I) 离子证明所罗门链和三叶子结之间的可逆拓变化.
结论:
- 这项研究证明了复杂分子拓的成功构造,包括使用Cp*Ir复合物和特定联结的所罗门链接和三叶草结.
- 这些发现突显了金属离子,特别是银的潜力,能够在分子系统中调解可逆的拓变化.
- 这项工作通过提供对复杂分子架构的设计和控制的见解,为超分子化学领域做出了贡献.
相关概念视频
10:29Quantitative Structure-Activity Relationship, Activity Prediction, and Molecular Dynamics of Non-nucleotide Reverse Transcriptase Inhibitors
2.2K
This study used in-silico strategies to identify Enumerated Etravirine as a promising therapeutic agent for HIV. Our findings on molecular interactions and dynamics support the rational design of novel NNRTIs as possible HIV treatment...
2.2K
Unusual Results
3.7K
Unusual results are those that have a very low chance of occurring. Unusual results can be identified using probabilities and the range rule of thumb. In problems involving probability, unusual results can be observed in 2 instances – an unusually high number of successes or an unusually low number of successes.
According to the range rule of thumb, any value above or below two standard deviations, 2σ from the mean, μ is considered unusual.
Maximum unusual value =...
According to the range rule of thumb, any value above or below two standard deviations, 2σ from the mean, μ is considered unusual.
Maximum unusual value =...
3.7K
Unsymmetric Bending
787
Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from those in symmetrical bending, and are essential for designing structures to withstand different loading conditions. In unsymmetrical bending, the neutral axis—where stress is zero—does not necessarily align with the geometric axes of the cross-section. The...
787
Molecular Structure and Acidity
20.4K
An acid can be deprotonated to form a conjugate base or an anion. If the produced anion is more stable, then the acid is stronger. On the contrary, if the anion is unstable, then the acid is weaker. Hence, to determine the acidity of the compound, the stability of its conjugate base is studied using various factors.
The size effect explains the change in atomic size on acidity. When comparing the acids formed from elements that belong to the same column in the periodic table, their atomic sizes...
The size effect explains the change in atomic size on acidity. When comparing the acids formed from elements that belong to the same column in the periodic table, their atomic sizes...
20.4K
09:57A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles
9.3K
To deliver cancer drugs to tumor sites with high specificity and reduced side effects, new methods based on nanoparticles are required. Here, we describe disulfide cross-linked micelles that can be easily prepared by hydrogen peroxide-mediated oxidation and are able to dissociate efficiently under a reducing tumor environment to release...
9.3K
Covalently Linked Protein Regulators
8.7K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
8.7K


