Here, we demonstrated an easy-to-access synthetic route to construct a p-extended dimeric MR-TADF emitter by fusing two DiKTa units onto a fluorene bridge. Through this strategy, the structural motion was reduced compared to the parent dimeric emitter DDiKTa. This led to an improved ΦPL of 79% and a red-shifted and narrower emission at 494 nm (FWHM of 49 nm) in 2 wt% doped films in mCP. Moreover, the DEST decreased to 0.18 eV, which led to a modest improvement in kRISC from 1.77 × 10