融灭的碳酸盐金属有机框架玻璃
Minhyuk Kim1, Hwa-Sub Lee2, Dong-Hyun Seo3
1Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
Nature communications
|February 8, 2024
概括
研究人员使用碳酸联体制造了新的金属有机框架 (MOF) 眼镜. 这些新的MOF玻璃具有低点和增强的机械性能,为更广泛的MOF应用打开了大门.
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:
- 金属有机框架 (MOF) 通常使用碳酸盐连接体构建,但形成MOF玻璃通常需要醇或弱协调连接体.
- 基于碳酸盐的MOF中强有力的协调阻碍了热玻璃化过程,阻碍了MOF玻璃的制造.
研究的目的:
- 为了研究基于碳酸盐的MOF玻璃的形成.
- 探索这些新型MOF玻璃的特性,特别是它们的点和机械特性.
主要方法:
- 使用Mg2+或Mn2+与adipate,一个异形碳酸盐连接体,合成化MOF玻璃.
- 由此产生的MOF玻璃的化温度 (Tm) 和机械性能 (硬度,弹性模量) 的表征.
主要成果:
- 成功生产了基于碳酸盐的MOF玻璃,化温度低 (284°C为Mg2+和238°C为Mn2+).
- 这些MOF玻璃显示出优越的机械性能,包括增强的硬度和弹性模量,与现有的天石-伊米达酸框架 (ZIF) 玻璃相比.
- 低的Tm归因于柔性,低对称的脂肪联体,以及金属离子中没有晶体场稳定能.
结论:
- 这项研究证明了制造基于碳酸盐的MOF玻璃的可行性.
- 开发的MOF玻璃为将更广泛的碳酸基MOF整合到玻璃材料提供了一个有前途的途径.
- 这些发现为具有可调节性质的MOF玻璃的新应用铺平了道路.
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