一个高度稳定的,多孔的金属有机框架的多功能性和晶体动力学[Zn4O(NTB) 2]
Eun Young Lee1, Seung Yeon Jang, Myunghyun Paik Suh
1Department of Chemistry, Seoul National University, Seoul 151-747, Republic of Korea.
Journal of the American Chemical Society
|April 28, 2005
概括
一个新的多孔金属有机框架表现出异常多孔性,热稳定性和选择性客结合性. 这种材料还表现出独特的客户依赖的发光和可逆动力学,这使得它对先进的应用非常有希望.
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) 是具有可调节的多孔结构的晶体材料.
- MOFs在气体储存,分离和催化方面具有潜力.
- 开发具有增强稳定性和功能性的MOF是一个正在进行的研究领域.
研究的目的:
- 为了合成和描述一个新的多孔金属有机框架.
- 为了研究框架的孔隙性,热稳定性和客体吸附性质.
- 探索材料的发光和动态行为,以响应客分子.
主要方法:
- 金属有机框架的溶热合成 [Zn(4) O(NTB) ((2) ].3DEF.EtOH.OH.
- 气体吸附测量 (例如,) 以确定孔隙性和表面积.
- 热重力测量分析 (TGA) 用于评估热稳定性.
- 用光谱技术研究发光和客人相互作用.
主要成果:
- 合成的框架具有很高的永久性多孔性 (1121 m(2) / g) 和孔量 (0.51 cm(3) / cm(3)).
- 框架1显示高热稳定性高达430°C和显著的吸附能力 (1.9 wt%).
- 观察到有机客体的选择性结合和依赖客体的蓝色发光,具有可逆框架动态.
结论:
- 小说MOF展示了出色的孔隙性,稳定性和选择性的客人互动.
- 材料的可调节发光和对客人的动态反应为感知和响应材料开辟了道路.
- 框架在高温下保持结晶性的能力在实际应用中值得注意.
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