两维灵活的金属有机框架的呼吸行为和超质子导电性,与基组调节
Zhen Zhang1, Jie Zhou1, Jinhong Xie1
1Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Key Laboratory of Research and Development for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R China.
Inorganic chemistry
|May 21, 2024
概括
灵活的金属有机框架 (FMOFs) 具有可调节的呼吸行为,旨在增强质子导电性. 化合物2A在98%的相对湿度下达到4.08 × 10−2 S cm−1的高导电性.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- 灵活的金属有机框架 (FMOFs) 呈现可逆结构转变,称为呼吸行为.
- 这些呼吸行为可以有效调节质子运输通道,为质子导电性提供优势.
- 设计具有可控灵活性的FMOF是提高质子导电性的关键.
研究的目的:
- 设计一个单变量灵活性协同策略,用于制造具有高质子导电性的FMOF.
- 合成和描述四种具有可调节呼吸特性的新型二维FMOF.
主要方法:
- 四种FMOF的合成和结构特征: {[Co(4-bpdb) ((R-ip) ]·溶剂} (14).
- 在溶剂分子吸收/脱落后对可逆呼吸行为进行调查,形成无溶剂化合物 (1A4A).
- 使用单晶X射线衍射,粉末X射线衍射和气体吸附 (N2,CO2) 的结构变化的分析.
主要成果:
- 这些FMOF表现出可逆的呼吸行为,由氧基扭曲和结构转变驱动.
- 呼吸导致细胞参数和空虚空间的显著变化.
- 化合物2A在363 K和98%的相对湿度下表现出最高的质子导电性 (4.08 × 10−2 S cm−1).
结论:
- 使用单变量灵活性的协同策略有效地提高了FMOF中的质子导电性.
- 设计的FMOF显示出作为质子导体的有前途潜力.
- 化合物2A代表了迄今为止报告的最高性能未修改的MOF基质子导体之一.
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