A 3D Anionic Metal Covalent Organic Framework with soc Topology Built from an Octahedral TiIV Complex for Photocatalytic Reactions. Issue 33 (9th July 2021)

• Record Type: Journal Article
• Authors: Lu, Hui‐Shu; Han, Wang‐Kang; Yan, Xiaodong; Chen, Chuan‐Jie; Niu, Tengfei; Gu, Zhi‐Guo
• Is Part Of: Angewandte Chemie international edition. Volume 60:Issue 33(2021)
• Page Start: 17881
• Page End: 17886
• Publication Date: 2021-07-09
• Subjects: covalent organic frameworks -- photocatalytic reactions -- three-dimensional -- TiIV complexes -- topology; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202102665
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The construction of three‐dimensional (3D) covalent organic frameworks (COFs) remains challenging due to the limited types of organic building blocks. With octahedral Ti IV complex as the building unit, this study reports on the first 3D anionic titanium‐based COF (Ti‐COF‐1 ) with an edge‐transitive (6, 4)‐connected soc topology. Ti‐COF‐1 exhibits high crystallinity, superior stability, and large specific surface area (1000.4 m 2 g −1 ). Moreover, Ti‐COF‐1 has a broad absorption band in the UV spectrum with an optical energy gap of 1.86 eV, and exhibits high photocatalytic activity toward Meerwein addition reactions. This research demonstrates an attractive strategy for the design of 3D functional COFs. Abstract : Octahedral Ti IV complex was used to construct the first 3D anionic titanium‐based COF (Ti‐COF‐1 ) with the edge transitive (6, 4)‐connected soc topology. Ti‐COF‐1 shows high crystallinity, superior stability, abundant porosity, and high photocatalytic activity for Meerwein addition reactions. This research will extend to enrich the structure and functionality of 3D frameworks.