金属有机框架的正合作质子化:对pH反应的光和质子导电
Shuai-Liang Yang1, Gen Li1, Meng-Yue Guo2
1Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China.
Journal of the American Chemical Society
|June 2, 2021
概括
这项研究在金属有机框架 (MOF) 中证明了正合作质子,通过光和质子导电性变化实现了高度敏感的pH传感. 这一发现为响应性MOF材料开辟了新的途径.
科学领域:
- 材料科学
- 化学学
- 纳米技术
背景情况:
- 积极的合作结合对于敏感的分子设计至关重要,但在传感金属有机框架 (MOF) 中未得到充分探索.
- 在气体分离和传感方面,MOF具有可调节的特性.
研究的目的:
- 在MOF中首次证明正合作质子.
- 为了研究光和质子导电性的pH反应.
主要方法:
- 使用Zr-O集群和双基四碳酸结合剂合成了水解稳定的MOF.
- 描述了MOF的pH依赖的光和质子导电性.
- 使用希尔系数分析了合作性质子机制.
主要成果:
- MOF表现出两个同步的,突然的光过渡 (关闭和启动) 希尔系数为1.6,表明合作质子.
- 由于质子触发的双发射之间的切换,观察到视觉颜色变化.
- 由于合作质子化,低pH值的质子导电率突然增加了两倍.
结论:
- 这项工作是MOF中合作质子化的第一个例子,导致高度敏感的pH响应光和质子导电性.
- 这些发现为MOF的结合性合作提供了新的见解,为先进的光和质子导电材料铺平了道路.
更多相关视频
06:53Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
2.2K
08:12Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
Published on: September 5, 2018
16.3K
相关概念视频
Metal-Ligand Bonds
22.6K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
22.6K
Variables Affecting Phosphorescence and Fluorescence
729
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
729
Photoluminescence: Applications
622
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
622
