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Construction of Hydrazone-Linked Macrocycle-Enriched Covalent Organic Frameworks for Highly Efficient Photocatalysis
Chemistry of Materials ( IF 8.6 ) Pub Date : 2022-06-09 , DOI: 10.1021/acs.chemmater.2c01358 Meng-Hao Li 1 , Zhiqiang Yang 2 , Zheng Li 1 , Jia-Rui Wu 1 , Bing Yang 2 , Ying-Wei Yang 1
Chemistry of Materials ( IF 8.6 ) Pub Date : 2022-06-09 , DOI: 10.1021/acs.chemmater.2c01358 Meng-Hao Li 1 , Zhiqiang Yang 2 , Zheng Li 1 , Jia-Rui Wu 1 , Bing Yang 2 , Ying-Wei Yang 1
Affiliation
Covalent organic frameworks (COFs) are an emerging class of crystalline porous materials with tailor-made functionalities for improved photocatalytic activity. However, limited choice of building blocks greatly restricts the photochemical performance and application scope of COFs in photocatalysis. Herein, a covalent hybridization approach is reported to address these issues by knitting rigid macrocyclic struts, namely, pillararenes, into the extended network of COFs. Varying different ratios of pillararenes with unique conformations and electron-rich cavities can not only generate a confined molecular space for exciton migration and carrier transport but also create new interfaces to interplay with photogenerated charge carriers, leading to high performance in promoting efficient oxidation of amines to imines. This work paves the way for constructing macrocycle-derived COFs and provides a promising molecular platform for photocatalysis through predesign and functionalization of the pore surface.
中文翻译:
用于高效光催化的腙连接大环富集共价有机骨架的构建
共价有机框架(COFs)是一类新兴的结晶多孔材料,具有定制的功能以提高光催化活性。然而,有限的结构单元选择极大地限制了COFs在光催化中的光化学性能和应用范围。本文报道了一种共价杂交方法,通过将刚性大环支柱(即柱芳烃)编织到 COF 的扩展网络中来解决这些问题。改变具有独特构象和富电子空腔的不同比例的柱芳烃不仅可以为激子迁移和载流子传输产生受限的分子空间,还可以创造新的界面以与光生电荷载流子相互作用,从而提高促进胺类高效氧化的性能。亚胺。
更新日期:2022-06-09
中文翻译:
用于高效光催化的腙连接大环富集共价有机骨架的构建
共价有机框架(COFs)是一类新兴的结晶多孔材料,具有定制的功能以提高光催化活性。然而,有限的结构单元选择极大地限制了COFs在光催化中的光化学性能和应用范围。本文报道了一种共价杂交方法,通过将刚性大环支柱(即柱芳烃)编织到 COF 的扩展网络中来解决这些问题。改变具有独特构象和富电子空腔的不同比例的柱芳烃不仅可以为激子迁移和载流子传输产生受限的分子空间,还可以创造新的界面以与光生电荷载流子相互作用,从而提高促进胺类高效氧化的性能。亚胺。