基于电子激活的轮式[Ru2[II,II]]/[Rh2[II,II]]模量器的链式复杂组件的孔中选择性NO捕获
Wataru Kosaka1, Kayo Yamagishi, Akihiro Hori
1Department of Chemistry, Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192 Japan.
Journal of the American Chemical Society
|October 25, 2013
概括
新的多孔协调聚合物通过独特的门打开机制选择性地吸附氧化 (NO). 这些电子捐赠材料在气体捕获应用中显示出前景.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 纳米技术 纳米技术
背景情况:
- 像金属有机框架 (MOF) 这样的多孔材料对于选择性分子吸附至关重要.
- 设计用于特定气体捕获的材料,例如接受电子的氧化 (NO),仍然是一个重大挑战.
研究的目的:
- 合成和描述具有高电子捐赠特性的新型一维链化合物,用于选择性氧化物 (NO) 吸附.
- 研究这些新型多孔材料的气体吸附性质,特别是对NO的吸附性质.
主要方法:
- 合成4 - 化酸盐桥架轮类型二金属 (II,II) 复合体与Ru和Rh,由氨酸 (phz) 连接.
- 在各种温度和压力下使用物理吸附异热体对晶体结构和气体吸附行为 (O2,CO2,NO) 的表征.
- 分析溶剂疏散和气体吸附时的结构变化,包括门开放现象.
主要成果:
- 合成了两个同结构化合物,[M2(4-Cl-2-OMePhCO2) 4(phz) ]·n(CH2Cl2) (M = Ru, Rh),并发现它们形成多孔的1D链.
- 溶剂的疏散导致了一个新的阶段 (1-干燥,2-干燥) 降低了孔隙性,但保留了气体容纳能力.
- 这两种化合物都表现出对O2和CO2的门开放行为,以及对NO的独特的两阶段门开放行为,具有显著的NO吸附和歇斯底里,表明选择性捕获.
结论:
- 合成的多孔协调聚合物显示,氧化 (NO) 通过门打开机制被选择性吸附.
- 电子捐赠器框架促进了显著的NO吸收,一些NO分子在吸附后被捕获.
- 这些发现凸显了简单,富含电子的多孔材料在有针对性的气体分离和捕获应用中的潜力.
相关概念视频
The Supercomplexes in the Crista Membrane
2.3K
The mitochondrial cristae membrane is the primary site for the oxidative phosphorylation (OXPHOS) process of energy conversion mediated through respiratory complexes I to V. These complexes have been widely studied for decades, and it has been proven that they form supramolecular structures called respiratory supercomplexes (SC). These higher-order complexes may be crucial in maintaining the biochemical structure and improving the physiological activity of the individual complexes while...
2.3K
Electron Transport Chain: Complex III and IV
6.8K
During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then transfer the electrons to ubiquinol, which carries them further to complex III. Complex III passes the electrons across the intermembrane space to Cyt c, which carries them further to complex IV. Complex IV donates electrons to oxygen and reduces it to water. As electrons pass through complexes I, III, and IV, the energy released aids the pumping...
6.8K
The Electron Transport Chain
13.9K
The electron transport chain or oxidative phosphorylation is an exothermic process in which free energy released during electron transfer reactions is coupled to ATP synthesis. This process is a significant source of energy in aerobic cells, and therefore inhibitors of the electron transport chain can be detrimental to the cell's metabolic processes.
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
13.9K
Valence Bond Theory
8.9K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.9K
Radical Reactivity: Intramolecular vs Intermolecular
1.4K
Radical reactions can occur either intermolecularly or intramolecularly. In an intermolecular radical reaction, a nucleophilic radical adds to an electrophilic alkene or vice versa. In such reactions, the radical and generally the alkene, which is also called the radical trap, are two different molecules. Additionally, for such intermolecular reactions to occur, the radical trap must be active, present in an excess concentration, and the radical starting material must have a weak...
1.4K
Photochemical Electrocyclic Reactions: Stereochemistry
1.4K
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
1.4K


