手性反向和刺激响应循环极化发光纳米/微材料通过路径依赖的状超分子多态
Chenyang Zhao1,2, Yuan Wang2, Yuqian Jiang3
1Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China.
Advanced materials (Deerfield Beach, Fla.)
|April 16, 2024
概括
研究人员开发了智能循环偏光发光 (CPL) 材料,使用自我组装和超分子多态. 这种方法允许可调节的CPL信号对多种刺激作出反应,为先进的材料设计提供了新的途径.
科学领域:
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
背景情况:
- 对超分子多态的精确操纵控制了自我组装的形态和功能.
- 高分子多态性很少用于制造定制的循环极化发光 (CPL) 材料.
研究的目的:
- 报告一种通过超分子多态工程开发智能CPL材料的新方法.
- 为了证明从两性性纳乙烯 - 希斯提丁化合物 (NIHis) 来制造具有可调节的CPL信号的独特性纳米结构.
主要方法:
- 利用NIH的依赖途径的超分子多态性来形成奇拉纳米结构.
- 通过散装溶剂效应进行受控的醇-酸盐复合,以诱导基于组装的CPL.
- 操纵温度以准备不同的纳米纤维和微皮带多态体,用反向的CPL信号.
主要成果:
- NIH自组装成不同的性纳米结构,具有相反和多刺激响应的CPL信号.
- 从多态基 tautomer 获得组装诱导的 CPL.
- 在磨砂,酸蒸和加热等刺激下,证明了微带多态的可调的CPL性能.
- 开发了一种可逆加热-冷却协议,用于CPL开关和发射颜色调节.
结论:
- 超分子多态工程为设计智能CPL材料提供了一种新的策略.
- 美国国家卫生研究院 (NIH) 的系统表现出路径依赖的自我组装,导致可调节的,对刺激有反应性的CPL属性.
- 这项工作为创建具有定制光学特性的先进功能材料提供了新的途径.
相关概念视频
Chirality in Nature
13.4K
Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid.
13.4K
Chirality
24.2K
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
24.2K
Stereoisomerism
11.9K
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...
11.9K
Prochirality
3.8K
The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
3.8K
Chirality at Nitrogen, Phosphorus, and Sulfur
5.7K
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
5.7K
Molecules with Multiple Chiral Centers
11.7K
Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...
11.7K


