ゲスト誘発呼吸と選択的ガス分離を示す有機ケージに基づく柔らかい有孔結晶
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
まとめ
研究者らは新しい柔らかい多孔結晶 (NKPOC-1) を開発し,ゲストによって引き起こされる呼吸を示しています. この材料はプロピンを選択的に吸収し,C3炭化水素分離の可能性を示しています.
科学分野:
- 材料科学
- 超分子化学
- 化学工学
背景:
- 柔らかい多孔結晶 (SPC) はダイナミックな吸収能力を持つ材料ですが,その設計と合成は複雑です.
- SPCにおける刺激反応は,ガス貯蔵と分離における応用において極めて重要です.
研究 の 目的:
- 新しいタイプの軟孔結晶であるNKPOC-1という イマイドベースの有機ケージを報告する.
- NKPOC-1のゲスト誘発の呼吸行動とガス吸収特性を調査する.
- 選択的なC3炭化水素分離のためのNKPOC-1の可能性を評価する.
主な方法:
- イミドベースの有機ケージNKPOC-1の合成
- ゲスト誘発の相変異 (α,β,γ) を観察するためのガス吸収実験.
- 分離性能の評価のための固定ベッド列の突破実験.
- 構造的変換と吸収エネルギーを研究するために,X線 difraktionと分子動力学シミュレーションを行います.
主要な成果:
- NKPOC-1は,CO2とC3の炭化水素に曝露すると,無孔 (α) と有孔 (β,γ) の相を切り替える逆向きのゲート開き行動を示す.
- NKPOC-1-αは,環境条件下でプロピネとプロパンよりもプロピネの選択的吸収を示しています.
- 二次および三次C3炭化水素混合物の分離が成功裏に確認されました.
- 構造変容はゲート開き効果と相関し,屈折とシミュレーションデータによってサポートされます.
結論:
- NKPOC-1は,調節可能な,ゲスト誘発のダイナミックソルプションを持つ新しいタイプの軟孔結晶を表しています.
- この材料は,特にプロピンは,選択的なC3炭化水素分離の大きな可能性を示しています.
- この研究は,ダイナミックな柔らかい多孔質の材料の構造-特性関係に関する洞察を提供し,再利用性の問題なくガス分離および貯蔵におけるその応用を進めています.
さらに関連する動画
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
関連する概念動画
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