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半孔烯联结共价有机框架具有异原子调节的结晶性和光催化行为

Mengqi Li¹, Xu Chi¹, Zixing Zhang¹

¹School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800Dongchuan Road, Shanghai, 200240, China.

Angewandte Chemie (International ed. in English)

|July 15, 2024

概括

研究人员开发了异原子调节的,2D乙烯链接共价有机框架 (COFs) 以提高半导体性能和催化. 这些材料表现出更好的结晶性和可调节的电子结构,用于高效的生成和选择性氧化反应.

科学领域:

材料科学材料科学材料科学
有机化学有机化学
纳米技术纳米技术

背景情况:

乙烯链接为半导体共有机框架 (COF) 提供稳定性和π-移位.
碳-碳双键形成的低可逆性阻碍了高结晶性COF的产生.

研究的目的:

开发一种对原子调节的策略,用于合成二维维尼林结合的COFs.
调查异质原子结合对COF结晶性和半导体性能的影响.
探索这些COF在生成和氧化反应中的催化应用.

主要方法:

基于甲基亚醇的单体与三甲基替代芳香衍生物的Knoevenagel凝结.
由此产生的二维COF的结构性,纹理性和电子性质的表征.
对生成和有氧氧氧化反应的光催化评价.

主要成果:

合成了高质量的,带有高表面积的二维维尼林结合的中孔性COF.
异质原子的结合显著改善了COF结晶性和量身定制的半导体特性.
一个COF在可见光下显示出生成活动增加了七倍.
实现了单片氧和超氧基 (30:1比) 的选择性生成,用于可调节的有氧硫醇氧化.

结论:

异原子调节的烯联结COF为具有定制电子和催化功能的先进材料提供了一个有前途的平台.
开发的策略允许精确控制COF结构和属性,用于特定的应用.
这些COF在可见光驱动的催化中显示出潜力,包括生产和选择性氧化.

关键词:

共价有机框架是共价有机框架.嵌入异原子的脊椎骨架.光催化作用的光催化作用一个单一的氧气.维尼连接的维尼连接

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