Affiliation:
1. Institute of Molecular Plus, Department of Chemistry and Haihe Laboratory of Sustainable Chemical Transformations Tianjin University 92 Weijin Road Tianjin 300072 China
Abstract
AbstractDelocalized organic π‐radicals are intrinsically amphoteric redox systems; however, achieving their multistage redox capability presents a challenge. In addition, their instability often hampers their synthesis, isolation, and characterization. Herein, we report the synthesis of a stable π‐extended nanographene π‐radical (NR1) and its isolation in the crystalline form. NR1 exhibits an unusual four‐stage amphoteric redox behavior, as revealed by cyclic voltammetry measurements. The stable charged species, including a cation and a radical dication, are characterized using spectroscopic methods. This study demonstrates that π‐extension could serve as a viable approach to unlock the multistage redox ability of delocalized organic radicals.
Funder
National Natural Science Foundation of China