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.
Magnetic field effects (MFE) on the luminescence, i.e., magnetoluminescence (ML) of radicals, hold great promise for developing novel exciton spin manipulation methodologies that are unachievable by conventional closed-shell luminescent molecules.
In 2018, Kusamoto and co-workers first reported MLs in organic radical excimer species, which opened the gate to this field. However, the development of highly luminescent diradicals and the achievement of their efficient single-molecule ML properties continue to be a formidable challenge.
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