“…On cooling to 77 K (frozen 2-methyloxolane), the emission maxima are red-shifted and the excited state lifetimes increase from τ(1/2) < 8 μs, to τ(1/2) values of up to 53 μs, consistent with the compounds with N^N = 6-Mebpy, 6-Etbpy and 5,5′-Me(2)bpy exhibiting thermally activated delayed fluorescence (TADF).…”
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