Table 2.

Experimentally obtained thermal properties, energy levels of HOMO, LUMO, E_g, S₁, T₁, and ΔE_ST for TpIBT-tFFO and IB-TRZ.

Emitter	Td (°C) a	HOMO (eV)b	LUMO (eV)c	Eg (eV)d,e	S1 (eV)d	T1 (eV)d	ΔEST (eV)d,i
TpIBT-tFFO	396	−5.73	−2.95	2.78	3.08f (2.94g)	3.07h	0.0076
IB-TRZ	386	−5.87	−2.80	3.07	3.17f (3.24g)	2.76h	0.41

^aDetermined from the 5% weight loss point of the TGA curve. Determined from

^bthe onset of photoelectron spectrum in air and

^cthe equation LUMO = E_g + HOMO.

^dMeasured in a toluene solution with the emitter concentration of 10⁻⁴ M.

^eDetermined from the onset of the UV-vis absorption spectrum.

^fDetermined from the onset of the steady state PL spectrum at 77 K.

^gDetermined from the onset of the PL spectrum at room temperature. Determined from

^hthe onset of the integrated PL spectrum from 1 to 10 ms at 77 K, and

ⁱthe equation ΔE_ST = S₁–T₁.