基于有机的柔软多孔晶体,具有客体诱导的呼吸和选择性气体分离
Zhifang Wang, Nivedita Sikdar1, Shi-Qiang Wang1
1Department of Chemical Sciences, Bernal Institute , University of Limerick , Limerick V94T9PX , Republic of Ireland.
Journal of the American Chemical Society
|May 24, 2019
概括
研究人员开发了一种新的柔软多孔晶体 (NKPOC-1), 这种材料选择性地吸附,显示出C3碳化合物分离的潜力.
科学领域:
- 材料科学
- 超分子化学
- 化学工程
背景情况:
- 软多孔晶体 (SPC) 是具有动态吸附能力的材料,但其设计和合成是复杂的.
- 对于气体储存和分离的应用,SPC中的刺激反应行为至关重要.
研究的目的:
- 报告一种新的基因基有机,NKPOC-1,作为一种新型的软多孔晶体.
- 调查NKPOC-1的客人诱导的呼吸行为和气体吸附特性.
- 评估NKPOC-1在选择性C3碳化合物分离中的潜力.
主要方法:
- 基于伊米德的有机NKPOC-1的合成
- 气体吸附实验以观察客体诱导的相位过渡 (α,β,γ).
- 固定床柱突破实验用于分离性能评估.
- 在现场进行X射线衍射和分子动力学模拟以研究结构转换和吸附能量.
主要成果:
- 在暴露于CO2和C3碳化合物时,NKPOC-1表现出可逆的开行为,在无孔 (α) 和有孔 (β,γ) 阶段之间切换.
- 在环境条件下,NKPOC-1-α显示了烯对烯的选择性吸附.
- 对二进制和三进制C3碳化合物混合物的分离成功进行了验证.
- 结构转换与门开放效应相关,得到 difraktion 和模拟数据的支持.
结论:
- NKPOC-1 是一种具有可调节的,客体诱导的动态吸附的新类软多孔晶体.
- 该材料具有选择性C3碳化合物分离的显著潜力,特别是.
- 这项研究提供了动态软孔状材料的结构性质关系的见解,促进了它们在气体分离和储存中的应用,而没有可回收性问题.
更多相关视频
10:10Spatiotemporally Controlled Nuclear Translocation of Guests in Living Cells Using Caged Molecular Glues as Photoactivatable Tags
Published on: January 17, 2019
11.3K
06:34In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
Published on: September 2, 2016
6.8K
相关概念视频
01:05Breathing
64.3K
The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...
64.3K
02:42Ionic Crystal Structures
16.9K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
16.9K
02:58Crystal Field Theory - Octahedral Complexes
30.8K
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...
30.8K
01:17The Thoracic Cage: Sternum
5.8K
The thoracic or rib cage forms the body's thorax (chest) portion. Its primary function in the body is to protect vital organs in the thoracic cavity, such as the heart and the lungs. It consists of 12 pairs of ribs with their costal cartilages and the sternum. The ribs are anchored posteriorly to the 12 thoracic vertebrae (T1-T12).
The sternum is the elongated bony structure on the anterior side of the thoracic cage. It consists of three parts: the manubrium, the body, and the xiphoid...
The sternum is the elongated bony structure on the anterior side of the thoracic cage. It consists of three parts: the manubrium, the body, and the xiphoid...
5.8K
01:20The Thoracic Cage: Ribs
8.3K
Ribs are curved, flattened bones forming the thoracic cavity wall with the thoracic muscles. There are 12 pairs of thoracic ribs. The posterior ends of all the ribs articulate with the T1–T12 thoracic vertebrae. In contrast,the anterior ends of most ribs attach to the sternum via their costal cartilages.
Parts of a Typical Rib
A typical rib has a head, neck, and body. The posterior end of the rib is called the head, followed by a narrow neck. The head articulates primarily with the costal...
Parts of a Typical Rib
A typical rib has a head, neck, and body. The posterior end of the rib is called the head, followed by a narrow neck. The head articulates primarily with the costal...
8.3K
01:32What is Natural Selection?
126.4K
Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become more common within a population or species. Naturally selected traits initially arise via random genetic mutations. In order for selection to occur, there must be variation within a population, the trait controlling the variation must be heritable, and there must be an evolutionary advantage for variation in the trait.
126.4K