Design and Synthesis of a Triazine‐Based sp2 Carbon‐Conjugated Covalent Organic Framework for Blue Light Photocatalysis
Authors:
Abstract
Fully conjugated covalent organic frameworks (COFs) can exhibit great potential in semiconductor photocatalysis. But their syntheses remain elusive due to the low reversibility of vinylene linkage. Herein, by tuning the amount of base and temperature, a novel triazine‐based sp2 carbon‐conjugated COF (TA‐sp2c‐COF) is successfully constructed over Cs2CO3. Besides, the influence of modulating factors on the chemical and optoelectronic properties of TA‐sp2c‐COF is thoroughly investigated. TA‐sp2c‐COF adopts an eclipsed AA stacking structure with uniform micropores (1.4 nm). The blue light photocatalysis of the highly crystalline TA‐sp2c‐COF is established for the selective oxidative coupling of amines with oxygen, and the predominant role of superoxide is identified in forming imines. This work foretells that meticulous modulation of reaction conditions is the key to constructing sp2 carbon‐conjugated COFs toward solar photocatalysis.Keywords
Funding Information
- National Natural Science Foundation of China (Grant 22072108)
This publication has 61 references indexed in Scilit:
- Two-dimensional sp 2 carbon–conjugated covalent organic frameworksScience, 2017
- Generation and Detection of Reactive Oxygen Species in PhotocatalysisChemical Reviews, 2017
- Visible-Light-Promoted Selective Oxidation of Alcohols Using a Covalent Triazine FrameworkACS Catalysis, 2017
- A two-dimensional conjugated polymer framework with fully sp2-bonded carbon skeletonPolymer Chemistry, 2016
- Insight into the crystallization of amorphous imine-linked polymer networks to 2D covalent organic frameworksChemical Communications, 2016
- Heterogeneous visible light photocatalysis for selective organic transformationsChemical Society Reviews, 2013
- Bioinspired Oxidation CatalystsScience, 2013
- Covalent organic frameworks (COFs): from design to applicationsChemical Society Reviews, 2012
- Aerobic Oxidative Coupling of Amines by Carbon Nitride Photocatalysis with Visible LightAngewandte Chemie International Edition, 2010
- A metal-free polymeric photocatalyst for hydrogen production from water under visible lightNature Materials, 2008