Bottom‐Up Preparation of Twisted Graphene Nanoribbons by Cu‐Catalyzed Deoxygenative Coupling

Autor: Yuan Gao, Xinqiang Hua, Wei Jiang, Chun‐Lin Sun, Chengshan Yuan, Zitong Liu, Hao‐Li Zhang, Xiangfeng Shao
Rok vydání: 2022
Předmět:
Zdroj: Angewandte Chemie International Edition. 61
ISSN: 1521-3773
1433-7851
Popis: Graphene nanoribbons (GNRs) are promising in organic optoelectronic materials, and their properties largely depend on the size, edge, and conformation. Herein, the fully armchair-edged GNRs (AGNRs) with lengths up to 2.65 nm by using a Cu-catalyzed deoxygenative coupling as a key step. The resulting AGNRs (2HBT, 3HBT, and 4HBT) possess highly twisted π-scaffolds, and the torsion angles between the adjacent triphenylene moieties are larger than 32°, as proved by crystallographic analyses. Theoretical and spectroscopic studies show that the butoxy groups endow AGNRs with electron-rich features, the extension of the π-system from 2HBT to 4HBT reinforces S
Databáze: OpenAIRE
Externí odkaz: