λ abs a [nm]	λ PL b [nm]	FWHMc [nm eV−1]	E S1 d [eV]	E T1 e [eV]	ΔESTf [eV]	E g g [eV]
DtBuCzB	467	481	22/0.11	2.73	2.58	0.15	2.55
Th-BN	485	512	41/0.20	2.55	2.41	0.14	2.45

^aPeak wavelength of the lowest energy absorption band.

^bPeak wavelength of the PL spectrum in toluene (1 × 10⁻⁵ M, 298 K).

^cFull width at half maximum.

^dSinglet energy estimated from the onset of the fluorescence spectrum in toluene (1 × 10⁻⁵ M, 298 K).

^eTriplet energy estimated from the onset of the phosphorescence spectrum in a frozen toluene matrix (1 × 10⁻⁵ M, 77 K).

^fΔE_ST = E_S1 − E_T1.

^gOptical band gap estimated from the absorption edge of the UV-vis spectrum.

^hAbsolute photoluminescence quantum yield measured with an integrating sphere system in N₂-bubbling toluene.