1D-2D复合矿薄膜具有自组装的奇拉结构,用于非互惠的循环极化排放调制
Yongze Xiao1, Ruxi Zhang1, Hongxu Li1
1School of Science, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300075, China. qiang_zhang24@tju.edu.cn.
概括
研究人员开发了一种简单的湿处理方法,用二维罗斯基特 (chiral perovskites) 来制造新的1D-2D复合膜. 这些膜呈现出增强的循环偏振辐射,为先进的光电子设备铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 光电学是指光电子产品.
背景情况:
- 由于其独特的特性,二维 (2D) 奇拉矿对光电子应用具有前景.
- 控制矿材料的形态和维度对于提高其性能至关重要.
- 开发简单的方法来创建复杂的矿结构是一个持续的挑战.
研究的目的:
- 开发一种简单的湿处理策略,用于转化2D化矿膜.
- 创建具有自组装平面合结构的新1D-2D复合膜.
- 调查用于光电子应用的由此产生的复合膜的循环极化辐射调制能力.
主要方法:
- 使用一种简单的湿处理工艺,部分转换2D性矿膜.
- 从2D电影中诱导了1D平面形结构的自组装.
- 对1D-2D复合膜的结构和光学特性进行了表征.
主要成果:
- 湿处理成功地将2D合矿膜转化为1D自组装平面合结构.
- 由此产生的1D-2D复合膜表现出强烈的非互惠的循环偏振辐射调制.
- 开发的策略为设计先进的性矿架构提供了一条途径.
结论:
- 一个简单的湿处理策略使2D性矿能够转化为1D-2D复合膜.
- 这些复合膜由于其排放调节能力,具有先进的光电子应用的巨大潜力.
- 平面形结构的自组装为设计功能性矿材料提供了一条新的路线.
更多相关视频
08:12Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
Published on: September 8, 2017
9.5K
04:14Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
Published on: October 1, 2019
12.8K
相关概念视频
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
22.8K
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...
22.8K
Stereoisomerism
11.7K
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...
11.7K
Photochemical Electrocyclic Reactions: Stereochemistry
1.8K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
Selection Rules: Photochemical Activation
1.8K
Molecules with Multiple Chiral Centers
11.1K
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...
11.1K
