使用三联体和 Zn 节点构建的离子导电金属共价有机框架
Fangzheng Chen1,2, Kun Zhang2, Yijia Yuan2
1Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City, Fuzhou 350507, China.
Journal of the American Chemical Society
|November 13, 2023
概括
我们开发了一种使用动态化学合成金属共价有机框架 (metallo-COF) 的新方法. 这种方法允许对框架进行控制
科学领域:
- 材料科学
- 化学学
- 纳米技术
背景情况:
- 金属共价有机框架 (metallo-COF) 是具有调节性质的先进材料.
- 创建金属COF的传统方法通常涉及刚性配体和合成后的金属合并.
- 使用"软"连接体的动态合成为控制拓和孔隙结构提供了潜力.
研究的目的:
- 呈现基于二二胺 (pdi) 配体的金属COF的合理合成.
- 通过Zn2+离子的存在或不存在来证明控制框架拓的能力 (方形式与Kagome格子).
- 建立一个金属模板合成路径,以改善金属COF结晶性和组成.
主要方法:
- 基于-2,6-二胺 (pdi) 的框架的动态合成.
- 在现场生成三联体并与Zn2+离子进行协调.
- 合成材料的表征,以确定晶格结构和金属配体组成.
主要成果:
- 存在Zn2+离子,导致形成一个方形状的晶格金属COF.
- 在缺少Zn2+离子的情况下,形成了具有Kagome格子的拓同位素COF.
- 与布伦斯特德酸催化方法相比,金属模拟合成产生了更好的晶度和接近1:1的[Zn2+]/联体比率的金属COF.
结论:
- 存在或缺少Zn2+离子作为控制pdi基础框架形态的开关.
- 金属模板合成方法在实现高晶度和精确的金属结合方面是优越的.
- 合成的pdiCOF-Zn-3与蜂晶格显示出对离子传输的应用有希望.
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