Year: 2024
Type: article
Abstract: Comprehensive Summary Open‐shell graphene fragments (OGFs) with non‐benzenoid topologies are attracting increasing attention due to their potential applications in organic light‐emitting diodes (OLEDs) and organic radical conductors. Herein, we report the synthesis of an air‐stable fluorenyl radical derivative (AR1) containing a seven‐membered ring, achieving thermodynamic stabilization through the fusion of a naphthalene ring around its periphery and anthracene substituent. The half‐life times (τ1/2) of AR1 in air‐saturated solution is 71.9 h. The high stability was ascribed to kinetic blocking of reactive sites with high spin densities. The geometric and electronic structures of AR1 were systematically studied by combining various experimental methods and density functional theory (DFT) calculations, which include X‐ray crystallographic analysis, electron spin resonance (ESR), cyclic voltammetry, and UV−vis−NIR measurements.
Source: Chinese Journal of Chemistry
Authors: Dan Shi, Xiaoqi Tian, Shuai Wu, Yanxia Huang, Jindong Xu, Ziang Zhai, Lili Xie, Yuanming Li, Zhe Sun
Institutions: Fuzhou University, Tianjin University
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4405398971