Abdurahman Alim, Shen Li, Wang Jingmin, Niu Meiling, Li Ping, Peng Qiming, Wang Jianpu, Lu Geyu
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Qianjin Avenue 2699, Changchun, 130012, China.
College of Chemical Engineering and Environmental Chemistry, Weifang University, Weifang, 261061, China.
Light Sci Appl. 2023 Nov 14;12(1):272. doi: 10.1038/s41377-023-01314-z.
Developing open-shell singlet (OS) diradicals with high luminescent properties and exceptional single-molecule magnetoluminescence (ML) performance is extremely challenging. Herein, we propose a concept to enhance luminescent efficiency by adjusting the donor conjugation of OS diradicals, thereby achieving a highly luminescent diradical, DR1, with outstanding stability and making it a viable option for use in the emitting layer of organic light-emitting diodes (OLEDs). More importantly, the 0.5 wt%-DR1 doped film demonstrates significant single-molecule magnetoluminescence (ML) properties. A giant ML value of 210% is achieved at a magnetic field of 7 T, showing the great potential of DR1 in magneto-optoelectronic devices.
开发具有高发光特性和卓越单分子磁致发光（ML）性能的开壳单线态（OS）双自由基极具挑战性。在此，我们提出一个概念，即通过调节OS双自由基的供体共轭来提高发光效率，从而实现一种具有出色稳定性的高发光双自由基DR1，并使其成为有机发光二极管（OLED）发光层应用的可行选择。更重要的是，0.5 wt%-DR1掺杂薄膜表现出显著的单分子磁致发光（ML）特性。在7 T磁场下实现了210%的巨大ML值，表明DR1在磁光电器件中具有巨大潜力。
