2D sp
<sup>2</sup>
Carbon‐Conjugated Porphyrin Covalent Organic Framework for Cooperative Photocatalysis with TEMPO
作者:Ji‐Long Shi、Rufan Chen、Huimin Hao、Cheng Wang、Xianjun Lang
DOI:10.1002/anie.202000723
日期:2020.6.2
2D covalent organic frameworks (COFs) are receiving ongoing attention in semiconductor photocatalysis. Herein, we present a photocatalytic selective chemical transformation by combining sp2 carbon-conjugated porphyrin-based covalent organic framework (Por-sp2 c-COF) photocatalysis with TEMPO catalysis illuminated by 623 nm red light-emitting diodes (LEDs). Highly selective conversion of amines into
二维共价有机骨架(COF)在半导体光催化领域正受到持续关注。在这里,我们通过结合sp2碳共轭卟啉基共价有机框架(Por-sp2 c-COF)光催化和623 nm红色发光二极管(LED)照明的TEMPO催化,提出光催化选择性化学转化。在几分钟内迅速实现了胺向亚胺的高度选择性转化。具体地说,卟啉接头的π共轭导致红光的大量吸收;sp2-C = C-双键连接确保了在高浓度胺下Por-sp2 c-COF的稳定性。最重要的是,我们发现Por-sp2 c-COF的晶体骨架对于与(2,2,6,6-四甲基哌啶-1-基)氧基(TEMPO)的协同光催化至关重要。