Table 1.

Photophysical properties of DTPPAO and tBuDTPPAO (1 wt%) in different hosts

	Host	λPL/λPH (nm)a	S1/T1 (eV)b	ΔEST (eV)c	ΦPL (%)d	τ (ms)e
DTPPAO	TPO	440/500	3.05/2.77	0.28	4.01	86.1
	TPP	440/500	3.06/2.77	0.29	5.60	110.6
	SF	441/501	3.07/2.76	0.31	5.07	287.7
tBuDTPPAO	TPO	441/490	3.04/2.78	0.26	9.15	199.1
	TPP	446/490	3.03/2.79	0.24	12.62	209.2
	SF	442/490	3.04/2.78	0.26	8.38	298.4

^aThe peaks of fluorescence (RT) and phosphorescence spectra (77 K).

^bCalculated from the onsets of the fluorescence (RT) and phosphorescence spectra (77 K).

^cExperimentally determined singlet–triplet energy splitting.

^dPLQY measured in air at room temperature.

^eLifetimes of phosphorescence spectra at room temperature estimated from the transient decay curves.