Designed Synthesis of a 2D Porphyrin‐Based sp2 Carbon‐Conjugated Covalent Organic Framework for Heterogeneous Photocatalysis. (4th April 2019)

• Record Type: Journal Article
• Authors: Chen, Rufan; Shi, Ji‐Long; Ma, Yuan; Lin, Guiqing; Lang, Xianjun; Wang, Cheng
• Is Part Of: Angewandte Chemie. Volume 131:Number 19(2019)
• Page Start: 6496
• Page End: 6500
• Publication Date: 2019-04-04
• Subjects: Hohe Stabilität -- Konjugierte Polymere -- Kovalent-organische Gerüste -- Metallfreie Photokatalysatoren -- Porphyrinchemie; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201902543
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: The construction of stable covalent organic frameworks (COFs) for various applications is highly desirable. Herein, we report the synthesis of a novel two‐dimensional (2D) porphyrin‐based sp 2 carbon‐conjugated COF (Por‐sp 2 c‐COF), which adopts an eclipsed AA stacking structure with a Brunauer—Emmett—Teller surface area of 689 m 2 g −1 . Owing to the C=C linkages, Por‐sp 2 c‐COF shows a high chemical stability under various conditions, even under harsh conditions such as 9 m HCl and 9 m NaOH solutions. Interestingly, Por‐sp 2 c‐COF can be used as a metal‐free heterogeneous photocatalyst for the visible‐light‐induced aerobic oxidation of amines to imines. More importantly, in comparison to imine‐linked Por‐COF, the inherent structure of Por‐sp 2 c‐COF equips it with several advantages as a photocatalyst, including reusability and high photocatalytic performance. This clearly demonstrates that sp 2 carbon‐linked 2D COFs can provide an interesting platform for heterogeneous photocatalysis. Abstract : Hinter Porphyrin‐Gittern : Eine neuartige, zweidimensionale, Porphyrin‐basierte, vollständig C(sp 2 )‐konjugierte kovalent‐organische Gerüstverbindung wird vorgestellt. Sie zeigt eine hohe chemische Stabilität unter verschiedensten Bedingungen und kann als hocheffizienter metallfreier Photokatalysator für die durch sichtbares Licht induzierte aerobe Oxidation von Aminen zu Iminen genutzt werden.