Table 2. Photophysical Properties of the Molecules in 1 wt % ZEONEX Films.
| emitter | 1CT/eVa | 3LE/eVb | ΔEST/eVc | ΦPLd | τp/nse | eτd/mse |
|---|---|---|---|---|---|---|
| TPA-ace | 2.99 | 2.53 | 0.46 | 0.37 | ||
| TPA-ace-Br | 2.77 | 2.51 | 0.26 | 8.05 | 0.33 (90.6%) | |
| 2.05 (9.4%) | ||||||
| 2TPA-ace | 2.95 | 2.55 | 0.40 | 0.36 | 1.93 (92.1%) | |
| 4.39 (7.9%) | ||||||
| TPA-ace-CN | 2.99 | 2.47 | 0.52 | 0.20 | 2.55 (97.0%) | |
| 7.50 (3.0%) | ||||||
| TPA-ace-TRZ | 2.94 | 2.46 | 0.48 | 0.12 | 6.9 (73%) | |
| 24.7 (27%) |
Values estimated from the onset of time-resolved PL spectra after the stabilization of 1CT or deconvoluted in order to obtain only the 1CT onset (Figure S42).
Values estimated from the onset of phosphorescence spectra. Spectra were collected with an 80 ms time delay and measured at 80 K.
ΔEST = 1CT – 3LE.
ΦPL measured for spin-coated films with a concentration of 1 wt % in the ZEONEX matrix using an integrating sphere connected to a Fluorolog-3.
Lifetimes estimated from monoexponential and biexponential decay fitting of the prompt and delayed regimes, respectively (Figure S46).