A highly efficient open-shell singlet luminescent diradical with strong magnetoluminescence properties

Open-shell singlet (OS) diradicals are important building blocks for functional molecular materials, with a large number of pioneering works by researchers advancing their development and applications across various fields. Despite this progress, there remains a lack of research regarding luminescent OS diradicals, hindering their potential use in optoelectronic applications. In fact, the luminescent diradicals are rare chemical species, there are only a few reports to date.