来自不可逆转反应的晶体二氧化物联结共价有机框架
Bing Zhang1, Mufeng Wei1, Haiyan Mao2
1Department of Chemistry , University of California-Berkeley ; Materials Sciences Division, Lawrence Berkeley National Laboratory; Kavli Energy NanoSciences Institute at Berkeley, and Berkeley Global Science Institute, Berkeley , California 94720 , United States.
Journal of the American Chemical Society
|September 25, 2018
概括
使用不可逆转的核友芳香替代反应合成了新的共价有机框架 (COF). 这些稳定,多孔的COF,称为COF-316和COF-318,可以进行先进的合成后修饰.
科学领域:
- 材料科学
- 有机化学
- 纳米技术
背景情况:
- 共价有机框架 (COF) 是具有调节性特性的晶体多孔聚合物.
- 传统的COF合成通常依赖于可逆的凝结反应,限制了它们的化学稳定性.
- 开发具有可访问功能的强大的COF对于先进的应用至关重要.
研究的目的:
- 通过不可逆的反应合成新的二维共价有机框架 (COF).
- 研究合成的COF的化学稳定性和多孔性.
- 展示这些强大的框架的合成后修改潜力.
主要方法:
- 在三角形2,3,6,7,10,11-六三烯 (HHTP) 和线性四甲 (TFPN) 或2,3,5,6-四甲-4-甲 (TFPC) 之间利用了核性芳香替代 (SNAr) 反应.
- 形成的晶体2DCOF,COF-316和COF-318,通过1,4-二氧化物键连接.
- 在恶劣的条件下对COF-316进行了合成后的修改.
主要成果:
- 通过不可逆转的SNAr反应成功合成了COF-316和COF-318.
- 由此产生的与1,4-二氧化物相关的COF在酸性和性条件下具有很高的化学稳定性.
- 证明了永久的多孔性和合成后修改的可行性,以引入新的功能.
结论:
- 不可逆的SNAr反应为合成稳定的COF提供了强大的途径.
- COF-316和COF-318具有固有的化学稳定性和永久性多孔性.
- 这些新型COF为先进的材料设计和应用提供了多功能平台,通过合成后的功能化.
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